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Reel/Frame:	013964/0378			Pages:	23
		Recorded:	03/19/2003
Conveyance:	SECURITY AGREEMENT

Total properties: 238
Page 1 of 3
Pages: 1 2 3

1

Patent #:	4395389	Issue Dt:	07/26/1983	Application #:	06353491	Filing Dt:	03/01/1982
Title:	CHLOROSILANE DISPROPORTIONATION PROCESS

2

Patent #:	4450960	Issue Dt:	05/29/1984	Application #:	06412980	Filing Dt:	08/30/1982
Title:	PACKAGE

3

Patent #:	4532120	Issue Dt:	07/30/1985	Application #:	06566279	Filing Dt:	12/28/1983
Title:	SILANE PURIFICATION PROCESS

4

Patent #:	4666532	Issue Dt:	05/19/1987	Application #:	06607349	Filing Dt:	05/04/1984
Title:	DENUDING SILICON SUBSTRATES WITH OXYGEN AND HALOGEN

5

Patent #:	4622082	Issue Dt:	11/11/1986	Application #:	06607996	Filing Dt:	06/25/1984
Title:	CONDITIONED SEMICONDUCTOR SUBSTRATES

6

Patent #:	4554141	Issue Dt:	11/19/1985	Application #:	06609812	Filing Dt:	05/14/1984
Title:	GAS STREAM PURIFICATION

7

Patent #:	4632816	Issue Dt:	12/30/1986	Application #:	06701947	Filing Dt:	02/15/1985
Title:	PROCESS FOR PRODUCTION OF SILANE

8

Patent #:	4608096	Issue Dt:	08/26/1986	Application #:	06736203	Filing Dt:	06/28/1985
Title:	GETTERING

9

Patent #:	4668330	Issue Dt:	05/26/1987	Application #:	06804709	Filing Dt:	12/05/1985
Title:	FURNACE CONTAMINATION

10

Patent #:	4851358	Issue Dt:	07/25/1989	Application #:	07154759	Filing Dt:	02/11/1988
Title:	SEMICONDUCTOR WAFER FABRICATION WITH IMPROVED CONTROL OF INTERNAL GETTERING SITES USING RAPID THERMAL ANNEALING

11

Patent #:	5075092	Issue Dt:	12/24/1991	Application #:	07296484	Filing Dt:	01/12/1989
Title:	PROCESS FOR PREPARATION OF SILANE

12

Patent #:	4868133	Issue Dt:	09/19/1989	Application #:	07324858	Filing Dt:	03/16/1989
Title:	SEMICONDUCTOR WAFER FABRICATION WITH IMPROVED CONTROL OF INTERNAL GETTERING SITES USING RTA

13

Patent #:	5206004	Issue Dt:	04/27/1993	Application #:	07723785	Filing Dt:	07/01/1991
Title:	SILANE COMPOSITIONS AND PROCESS

14

Patent #:	5178720	Issue Dt:	01/12/1993	Application #:	07744891	Filing Dt:	08/14/1991
Title:	METHOD FOR CONTROLLING OXYGEN CONTENT OF SILICON CRYSTALS USING A COMBINATION OF CUSP MAGNETIC FIELD AND CRYSTAL AND CRUCIBLE ROTATION RATES

15

Patent #:	5211931	Issue Dt:	05/18/1993	Application #:	07859146	Filing Dt:	03/27/1992
Title:	REMOVAL OF ETHYLENE FROM SILANE USING A DISTILLATION STEP AFTER SEPARATION USING A ZEOLITE MOLECULAR SIEVE

16

Patent #:	5288366	Issue Dt:	02/22/1994	Application #:	07873375	Filing Dt:	04/24/1992
Title:	METHOD FOR GROWING MULTIPLE SINGLE CRYSTALS AND APPARATUS FOR USE THEREIN

17

Patent #:	5290342	Issue Dt:	03/01/1994	Application #:	07873461	Filing Dt:	04/24/1992
Title:	SILANE COMPOSITIONS AND PROCESS

18

Patent #:	5445679	Issue Dt:	08/29/1995	Application #:	07996037	Filing Dt:	12/23/1992
Title:	CLEANING OF POLYCRYSTALLINE SILICON FOR CHARGING INTO A CZOCHRALSKI GROWING PROCESS

19

Patent #:	5377451	Issue Dt:	01/03/1995	Application #:	08021215	Filing Dt:	02/23/1993
Title:	WAFER POLISHING APPARATUS AND METHOD

20

Patent #:	5376890	Issue Dt:	12/27/1994	Application #:	08074915	Filing Dt:	06/10/1993
Title:	CAPACITIVE DISTANCE MEASURING APPARATUS HAVING LIQUID GROUND CONTACT

21

Patent #:	5408951	Issue Dt:	04/25/1995	Application #:	08095759	Filing Dt:	07/21/1993
Title:	METHOD FOR GROWING SILICON CRYSTAL

22

Patent #:	5340437	Issue Dt:	08/23/1994	Application #:	08133980	Filing Dt:	10/08/1993
Title:	PROCESS AND APPARATUS FOR ETCHING SEMICONDUCTOR WAFERS

23

Patent #:	5373807	Issue Dt:	12/20/1994	Application #:	08148896	Filing Dt:	11/08/1993
Title:	METHOD FOR GROWING MULTIPLE SINGLE CRYSTALS AND APPARATUS FOR USE THEREIN

24

Patent #:	5488924	Issue Dt:	02/06/1996	Application #:	08163661	Filing Dt:	12/06/1993
Title:	HOPPER FOR USE IN CHARGING SEMICONDUCTOR SOUCE MATERIAL

25

Patent #:	5417767	Issue Dt:	05/23/1995	Application #:	08174046	Filing Dt:	12/28/1993
Title:	WAFER CARRIER

26

Patent #:	5439523	Issue Dt:	08/08/1995	Application #:	08195766	Filing Dt:	02/14/1994
Title:	DEVICE FOR SUPPRESSING PARTICLE SPLASH ONTO A SEMICONDUCTOR WAFER

27

Patent #:	5422316	Issue Dt:	06/06/1995	Application #:	08214969	Filing Dt:	03/18/1994
Title:	SEMICONDUCTOR WAFER POLISHER AND METHOD

28

Patent #:	5550374	Issue Dt:	08/27/1996	Application #:	08241972	Filing Dt:	05/12/1994
Title:	METHODS AND APPARATUS FOR DETERMINING INTERSTITIAL OXYGEN CONTENT OF RELATIVELY LARGE DIAMETER SILICON CRYSTALS BY INFRARED SPECTROSCOPY

29

Patent #:	5605487	Issue Dt:	02/25/1997	Application #:	08242560	Filing Dt:	05/13/1994
Title:	SEMICONDUCTOR WAFER POLISHING APPARATUS AND METHOD

30

Patent #:	5571373	Issue Dt:	11/05/1996	Application #:	08245592	Filing Dt:	05/18/1994
Title:	METHOD OF ROUGH POLISHING SEMICONDUCTOR WAFERS TO REDUCE SURFACE ROUGHNESS

31

Patent #:	5622568	Issue Dt:	04/22/1997	Application #:	08259052	Filing Dt:	06/13/1994
Title:	GETTERING OF METALS FROM SOLUTION

32

Patent #:	5573680	Issue Dt:	11/12/1996	Application #:	08283782	Filing Dt:	08/01/1994
Title:	METHOD FOR ETCHING A SEMICONDUCTOR MATERIAL WITHOUT ALTERING FLOW PATTERN DEFECT DISTRIBUTION

33

Patent #:	5516730	Issue Dt:	05/14/1996	Application #:	08296537	Filing Dt:	08/26/1994
Title:	PRE-THERMAL TREATMENT CLEANING PROCESS OF WAFERS

34

Patent #:	5632666	Issue Dt:	05/27/1997	Application #:	08330906	Filing Dt:	10/28/1994
Title:	METHOD AND APPARATUS FOR AUTOMATED QUALITY CONTROL IN WAFER SLICING

35

Patent #:	5668045	Issue Dt:	09/16/1997	Application #:	08346695	Filing Dt:	11/30/1994
Title:	PROCESS FOR STRIPPING OUTER EDGE OF BESOI WAFERS

36

Patent #:	5593494	Issue Dt:	01/14/1997	Application #:	08403301	Filing Dt:	03/14/1995
Title:	PRECISION CONTROLLED PRECIPITATION OF OXYGEN IN SILICON

37

Patent #:	5494849	Issue Dt:	02/27/1996	Application #:	08409208	Filing Dt:	03/23/1995
Title:	SINGLE-ETCH STOP PROCESS FOR THE MANUFACTURE OF SILICON-ON-INSULATOR SUBSTRATES

38

Patent #:	5518549	Issue Dt:	05/21/1996	Application #:	08423363	Filing Dt:	04/18/1995
Title:	SUSCEPTOR AND BAFFLE THEREFOR

39

Patent #:	5592295	Issue Dt:	01/07/1997	Application #:	08436840	Filing Dt:	05/08/1995
Title:	APPARATUS AND METHOD FOR SEMICONDUCTOR WAFER EDGE INSPECTION

40

Patent #:	5653799	Issue Dt:	08/05/1997	Application #:	08459765	Filing Dt:	06/02/1995
Title:	METHOD FOR CONTROLLING GROWTH OF A SILICON CRYSTAL

41

Patent #:	5578284	Issue Dt:	11/26/1996	Application #:	08483304	Filing Dt:	06/07/1995
Title:	A SILICON SINGLE CRYSTAL HAVING ELIMINATED DISCLOCATION IN ITS NECK CRYSTAL

42

Patent #:	5593498	Issue Dt:	01/14/1997	Application #:	08488924	Filing Dt:	06/09/1995
Title:	APPARATUS FOR ROTATING A CRUCIBLE OF A CRYSTAL PULLING MACHINE

43

Patent #:	5976247	Issue Dt:	11/02/1999	Application #:	08490465	Filing Dt:	06/14/1995
Title:	SURFACE-TREATED CRUCIBLES FOR IMPROVED ZERO DISLOCATION PERFORMANCE

44

Patent #:	5582642	Issue Dt:	12/10/1996	Application #:	08492666	Filing Dt:	06/20/1995
Title:	APPARATUS AND METHOD FOR ADJUSTING THE POSITION OF A PULL WIRE OF A CRYSTAL PULLING MACHINE

45

Patent #:	5588993	Issue Dt:	12/31/1996	Application #:	08507055	Filing Dt:	07/25/1995
Title:	METHOD FOR PREPARING MOLTEN SILICON MELT FROM POLYCRYSTALLINE SILICON CHARGE

46

Patent #:	5753567	Issue Dt:	05/19/1998	Application #:	08519993	Filing Dt:	08/28/1995
Title:	CLEANING OF METALLIC CONTAMINANTS FROM THE SURFACE OF POLYCRYSTALLINE SILICON WITH A HALOGEN PLASMA

47

Patent #:	5908504	Issue Dt:	06/01/1999	Application #:	08530612	Filing Dt:	09/20/1995
Title:	METHOD FOR TUNING BARREL REACTOR PURGE SYSTEM

48

Patent #:	5762491	Issue Dt:	06/09/1998	Application #:	08551152	Filing Dt:	10/31/1995
Title:	SOLID MATERIAL DELIVERY SYSTEM FOR A FURNACE

49

Patent #:	5656078	Issue Dt:	08/12/1997	Application #:	08558609	Filing Dt:	11/14/1995
Title:	NON-DISTORTING VIDEO CAMERA FOR USE WITH A SYSTEM FOR CONTROLLING GROWTH OF A SILICON CRYSTAL

50

Patent #:	5712198	Issue Dt:	01/27/1998	Application #:	08568997	Filing Dt:	12/07/1995
Title:	PRE-THERMAL TREATMENT CLEANING PROCESS

51

Patent #:	5746834	Issue Dt:	05/05/1998	Application #:	08582650	Filing Dt:	01/04/1996
Title:	METHOD AND APPARATUS FOR PURGING BARREL REACTORS

52

Patent #:	5937312	Issue Dt:	08/10/1999	Application #:	08584058	Filing Dt:	01/11/1996
Title:	SINGLE-ETCH STOP PROCESS FOR THE MANUFACTURE OF SILICON-ON-INSULATOR WAFERS

53

Patent #:	5676751	Issue Dt:	10/14/1997	Application #:	08589491	Filing Dt:	01/22/1996
Title:	RAPID COOLING OF CZ SILICON CRYSTAL GROWTH SYSTEM

54

Patent #:	5840120	Issue Dt:	11/24/1998	Application #:	08589612	Filing Dt:	01/22/1996
Title:	APPARATUS FOR CONTROLLING NUCLEATION OF OXYGEN PRECIPITATES IN SILICON CRYSTALS

55

Patent #:	5814148	Issue Dt:	09/29/1998	Application #:	08595075	Filing Dt:	02/01/1996
Title:	METHOD FOR PREPARING MOLTEN SILICON MELT FROM POLYCRYSTALLINE SILICON CHARGE

56

Patent #:	6026963	Issue Dt:	02/22/2000	Application #:	08604813	Filing Dt:	02/23/1996
Title:	MOISTURE BARRIER BAG HAVING WINDOW

57

Patent #:	5665159	Issue Dt:	09/09/1997	Application #:	08620137	Filing Dt:	03/21/1996
Title:	SYSTEM FOR CONTROLLING GROWTH OF A SILICON CRYSTAL

58

Patent #:	5840202	Issue Dt:	11/24/1998	Application #:	08639185	Filing Dt:	04/26/1996
Title:	APPARATUS AND METHOD FOR SHAPING POLISHING PADS

59

Patent #:	5799728	Issue Dt:	09/01/1998	Application #:	08641179	Filing Dt:	04/30/1996
Title:	DEHUMIDIFIER

60

Patent #:	5843234	Issue Dt:	12/01/1998	Application #:	08644181	Filing Dt:	05/10/1996
Title:	METHOD AND APPARATUS FOR AIMING A BARREL REACTOR NOZZLE

61

Patent #:	5679055	Issue Dt:	10/21/1997	Application #:	08653666	Filing Dt:	05/31/1996
Title:	AUTOMATED WAFER LAPPING SYSTEM

62

Patent #:	5628823	Issue Dt:	05/13/1997	Application #:	08675550	Filing Dt:	07/03/1996
Title:	PROCESS FOR ELIMINATING DISLOCATIONS IN THE NECK OF A SILICON SINGLE CRYSTAL

63

Patent #:	5626159	Issue Dt:	05/06/1997	Application #:	08686367	Filing Dt:	07/25/1996
Title:	APPARATUS FOR CLEANING SEMICONDUCTOR WAFERS

64

Patent #:	5849076	Issue Dt:	12/15/1998	Application #:	08686565	Filing Dt:	07/26/1996
Title:	COOLING SYSTEM AND METHOD FOR EPITAXIAL BARREL REACTOR

65

Patent #:	5791493	Issue Dt:	08/11/1998	Application #:	08686570	Filing Dt:	07/26/1996
Title:	POLYSILICON PARTICLE CLASSIFYING APPARATUS

66

Patent #:	5787595	Issue Dt:	08/04/1998	Application #:	08689432	Filing Dt:	08/09/1996
Title:	METHOD AND APPARATUS FOR CONTROLLING FLATNESS OF POLISHED SEMICONDUCTOR WAFER

67

Patent #:	5779791	Issue Dt:	07/14/1998	Application #:	08694157	Filing Dt:	08/08/1996
Title:	PROCESS FOR CONTROLLING THERMAL HISTORY OF CZOCHRALSKI-GROWN SILICON

68

Patent #:	5827113	Issue Dt:	10/27/1998	Application #:	08710655	Filing Dt:	09/20/1996
Title:	CUTTING MACHINE

69

Patent #:	5795381	Issue Dt:	08/18/1998	Application #:	08711085	Filing Dt:	09/09/1996
Title:	SIO PROBE FOR REAL-TIME MONITORING AND CONTROL OF OXYGEN DURING CZOCHRALSKI GROWTH OF SINGLE CRYSTAL SILICON

70

Patent #:	5735258	Issue Dt:	04/07/1998	Application #:	08717092	Filing Dt:	09/20/1996
Title:	CUTTING MACHINE

71

Patent #:	5765890	Issue Dt:	06/16/1998	Application #:	08724908	Filing Dt:	10/03/1996
Title:	DEVICE FOR TRANSFERRING A SEMICONDUCTOR WAFER

72

Patent #:	5766341	Issue Dt:	06/16/1998	Application #:	08725861	Filing Dt:	10/04/1996
Title:	A METHOD FOR ROTATING A CRUCIBLE OF A CRYSTAL PULLING MACHINE

73

Patent #:	5904768	Issue Dt:	05/18/1999	Application #:	08732527	Filing Dt:	10/15/1996
Title:	PROCESS FOR CONTROLLING THE OXYGEN CONTENT IN SILICON WAFERS HEAVILY DOPED WITH ANTIMONY OR ARSENIC

74

Patent #:	5855859	Issue Dt:	01/05/1999	Application #:	08739550	Filing Dt:	10/30/1996
Title:	GETTERING AGENT

75

Patent #:	5919311	Issue Dt:	07/06/1999	Application #:	08749906	Filing Dt:	11/15/1996
Title:	CONTROL OF SIO2 ETCH RATE USING DILUTE CHEMICAL ETCHANTS IN THE PRESENCE OF A MEGASONIC FIELD

76

Patent #:	5770522	Issue Dt:	06/23/1998	Application #:	08764458	Filing Dt:	11/12/1996
Title:	POLISHING BLOCK HEATER

77

Patent #:	5789309	Issue Dt:	08/04/1998	Application #:	08774519	Filing Dt:	12/30/1996
Title:	METHOD AND SYSTEM FOR MONOCRYSTALLINE EPITAXIAL DEPOSITION

78

Patent #:	5843322	Issue Dt:	12/01/1998	Application #:	08779976	Filing Dt:	12/23/1996
Title:	PROCESS FOR ETCHING N, P, N+ AND P+ TYPE SLUGS AND WAFERS

79

Patent #:	5816274	Issue Dt:	10/06/1998	Application #:	08843632	Filing Dt:	04/10/1997
Title:	APPARATUS FOR CLEANING SEMICONDUCTOR WAFERS

80

Patent #:	5792273	Issue Dt:	08/11/1998	Application #:	08863960	Filing Dt:	05/27/1997
Title:	SECONDARY EDGE REFLECTOR FOR HORIZONTAL REACTOR

81

Patent #:	5870881	Issue Dt:	02/16/1999	Application #:	08883893	Filing Dt:	06/27/1997
Title:	BOX CLOSING APPARATUS

82

Patent #:	5894711	Issue Dt:	04/20/1999	Application #:	08891529	Filing Dt:	07/11/1997
Title:	BOX HANDLING APPARATUS AND METHOD

83

Patent #:	6006738	Issue Dt:	12/28/1999	Application #:	08895388	Filing Dt:	07/16/1997
Title:	METHOD AND APPARATUS FOR CUTTING AN INGOT

84

Patent #:	5846318	Issue Dt:	12/08/1998	Application #:	08896177	Filing Dt:	07/17/1997
Title:	METHOD AND SYSTEM FOR CONTROLLING GROWTH OF A SILICON CRYSTAL

85

Patent #:	5942032	Issue Dt:	08/24/1999	Application #:	08904943	Filing Dt:	08/01/1997
Title:	HEAT SHIELD ASSEMBLY AND METHOD OF GROWING VACANCY RICH SINGLE CRYSTAL SILICON

86

Patent #:	5885344	Issue Dt:	03/23/1999	Application #:	08907795	Filing Dt:	08/08/1997
Title:	NON-DASH NECK METHOD FOR SINGLE CRYSTAL SILICON GROWTH

87

Patent #:	5974680	Issue Dt:	11/02/1999	Application #:	08917206	Filing Dt:	08/22/1997
Title:	APPARATUS FOR USE IN CLEANING WAFERS

88

Patent #:	5882989	Issue Dt:	03/16/1999	Application #:	08934946	Filing Dt:	09/22/1997
Title:	PROCESS FOR THE PREPARATION OF SILICON WAFERS HAVING A CONTROLLED DISTRIBUTION OF OXYGEN PRECIPITATE NUCLEATION CENTERS

89

Patent #:	5882402	Issue Dt:	03/16/1999	Application #:	08939802	Filing Dt:	09/30/1997
Title:	METHOD AND SYSTEM FOR CONTROLLING GROWTH OF A SILICON CRYSTAL

90

Patent #:	5922127	Issue Dt:	07/13/1999	Application #:	08940166	Filing Dt:	09/30/1997
Title:	HEAT SHIELD FOR CRYSTAL PULLER

91

Patent #:	5865670	Issue Dt:	02/02/1999	Application #:	08941777	Filing Dt:	09/30/1997
Title:	WAFER DEMOUNT APPARATUS

92

Patent #:	5975998	Issue Dt:	11/02/1999	Application #:	08943091	Filing Dt:	09/26/1997
Title:	WAFER PROCESSING APPARATUS

93

Patent #:	5906533	Issue Dt:	05/25/1999	Application #:	08950842	Filing Dt:	10/15/1997
Title:	RADIANT POLISHING BLOCK HEATER

94

Patent #:	5919303	Issue Dt:	07/06/1999	Application #:	08951264	Filing Dt:	10/16/1997
Title:	PROCESS FOR PREPARING A SILICON MELT FROM A POLYSILICON CHARGE

95

Patent #:	5910295	Issue Dt:	06/08/1999	Application #:	08966798	Filing Dt:	11/10/1997
Title:	CLOSED LOOP PROCESS FOR PRODUCING POLYCRYSTALLINE SILICON AND FUMED SILICA

96

Patent #:	5839460	Issue Dt:	11/24/1998	Application #:	08970129	Filing Dt:	11/13/1997
Title:	APPARATUS FOR CLEANING SEMICONDUCTOR WAFERS

97

Patent #:	5948699	Issue Dt:	09/07/1999	Application #:	08975752	Filing Dt:	11/21/1997
Title:	WAFER BACKING INSERT FOR FREE MOUNT SEMICONDUCTOR POLISHING APPARATUS AND PROCESS

98

Patent #:	5935328	Issue Dt:	08/10/1999	Application #:	08978334	Filing Dt:	11/25/1997
Title:	APPARATUS FOR USE IN CRYSTAL PULLING

99

Patent #:	5837662	Issue Dt:	11/17/1998	Application #:	08990123	Filing Dt:	12/12/1997
Title:	POST-LAPPING CLEANING PROCESS FOR SILICON WAFERS

100

Patent #:	6015335	Issue Dt:	01/18/2000	Application #:	08991962	Filing Dt:	12/17/1997
Title:	APPARATUS FOR DRESSING INSIDE DIAMETER SAWS

Assignors

1

MEMC ELECTRONIC MATERIALS, INC.

Exec Dt:

03/03/2002

2

MEMC PASADENA, INC.

Exec Dt:

03/03/2002

3

PLASMASIL, L.L.C.

Exec Dt:

03/03/2002

4

Exec Dt:

03/03/2003

5

MEMC SOUTHWEST INC.

Exec Dt:

03/03/2003

6

MEMC INTERNATIONAL, INC.

Exec Dt:

03/03/2003

7

MEMC HOLDINGS CORPORATION

Exec Dt:

03/03/2003

Assignee

1

CITICORP USA, INC.

2 PENNS WAY

SUITE 200

NEW CASTLE, DELAWARE 19720

Correspondence name and address
	CLEARY, GOTTLIEB STEEN & HAMILTON
	BRIAN CRIST
	ONE LIBERTY PLAZA
	NEW YORK, NY 10006

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