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Patent Assignment Details
NOTE:Results display only for issued patents and published applications. For pending or abandoned applications please consult USPTO staff.

Reel/Frame:005481/0243   Pages: 16
Recorded: 10/18/1990
Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS).
Total properties: 66
1
Patent #:
Issue Dt:
10/12/1971
Application #:
05040155
Filing Dt:
05/25/1970
Title:
2
Patent #:
Issue Dt:
11/16/1971
Application #:
05040246
Filing Dt:
05/25/1970
Title:
MAGNETIC FLUID SEALS
3
Patent #:
Issue Dt:
Application #:
05055392
Filing Dt:
Title:
4
Patent #:
Issue Dt:
Application #:
05186926
Filing Dt:
Title:
5
Patent #:
Issue Dt:
11/04/1975
Application #:
05324414
Filing Dt:
01/17/1973
Title:
FERRO FLUID COMPOSITIONS AND PROCESS OF MAKING SAME
6
Patent #:
Issue Dt:
Application #:
05784036
Filing Dt:
Title:
7
Patent #:
Issue Dt:
Application #:
05805643
Filing Dt:
Title:
8
Patent #:
Issue Dt:
06/10/1980
Application #:
05857331
Filing Dt:
12/05/1977
Title:
DIAMETER CONTROL IN CRYSTAL ROD PULLING
9
Patent #:
Issue Dt:
06/10/1980
Application #:
05857331
Filing Dt:
12/05/1977
Title:
DIAMETER CONTROL IN CRYSTAL ROD PULLING
10
Patent #:
Issue Dt:
04/29/1980
Application #:
05964601
Filing Dt:
11/29/1978
Title:
FERROFLUID CENTRIFUGAL SEAL
11
Patent #:
Issue Dt:
02/24/1981
Application #:
06033466
Filing Dt:
04/26/1979
Title:
SELF-ACTIVATING FERROFLUID SEALS
12
Patent #:
Issue Dt:
02/24/1981
Application #:
06145828
Filing Dt:
05/01/1980
Title:
SELF-ACTIVATING FERROFLUID SEAL AND METHOD
13
Patent #:
Issue Dt:
08/18/1981
Application #:
06149141
Filing Dt:
05/14/1980
Title:
LINEAR DRIVE SHAFT SEAL
14
Patent #:
Issue Dt:
01/05/1982
Application #:
06155949
Filing Dt:
06/03/1980
Title:
LINEAR SEAL APPARATUS
15
Patent #:
Issue Dt:
11/17/1981
Application #:
06183540
Filing Dt:
09/02/1980
Title:
CHAIN INTRODUCTION MEANS FOR A CRYSTAL GROWTH PULLING HEAD
16
Patent #:
Issue Dt:
10/26/1982
Application #:
06187317
Filing Dt:
09/15/1980
Title:
STABLE FERROFLUID COMPOSITIONS AND METHOD OF MAKING SAME
17
Patent #:
Issue Dt:
11/02/1982
Application #:
06208287
Filing Dt:
11/19/1980
Title:
FERROFLUID ROTARYSHAFT SEAL
18
Patent #:
Issue Dt:
11/02/1982
Application #:
06208288
Filing Dt:
11/19/1980
Title:
FERROFLUID ROTARY-SHAFT SEAL APPARATUS AND METHOD
19
Patent #:
Issue Dt:
11/02/1982
Application #:
06208289
Filing Dt:
11/19/1980
Title:
FERROFLUID ROTARY-SHAFT SEAL APPARATUS AND METHOD
20
Patent #:
Issue Dt:
11/02/1982
Application #:
06208290
Filing Dt:
11/19/1980
Title:
FERROFLUID ROTARY-SHAFT SEAL APPARATUS AND METHOD
21
Patent #:
Issue Dt:
07/20/1982
Application #:
06208438
Filing Dt:
11/19/1980
Title:
FERROFLUID SEAL APPARATUS
22
Patent #:
Issue Dt:
02/16/1982
Application #:
06234561
Filing Dt:
02/13/1981
Title:
LOW-VAPOR-PRESSURE FERROFLUIDS AND METHOD OF MAKING SAME
23
Patent #:
Issue Dt:
02/01/1983
Application #:
06249196
Filing Dt:
03/30/1981
Title:
CRYSTAL GROWING FURNACE PULLING HEAD
24
Patent #:
Issue Dt:
09/21/1982
Application #:
06257591
Filing Dt:
04/27/1981
Title:
METHOD FOR CIRCUMFERENTIAL DIMENSION MEASURING CONTROL IN CRYSTAL ROD PULLING
25
Patent #:
Issue Dt:
09/27/1983
Application #:
06271980
Filing Dt:
06/09/1981
Title:
APPARATUS FOR AND METHOD OF SEALING SHAFTS IN CRYSTAL-GROWING FURNACE SYSTEMS
26
Patent #:
Issue Dt:
09/21/1982
Application #:
06298242
Filing Dt:
08/07/1981
Title:
APPARATUS FOR AND METHOD OF HANDLING CRYSTALS FRM CRYSTAL-GROWING FURNACES
27
Patent #:
Issue Dt:
10/04/1983
Application #:
06450339
Filing Dt:
12/16/1982
Title:
SINGLE-POLE-PIECE FERROFLUID SEAL APPARATUS AND EXCLUSION SEAL SYSTEM
28
Patent #:
Issue Dt:
10/04/1983
Application #:
06455065
Filing Dt:
01/05/1983
Title:
NONBURSTING MULTIPLE-STAGE FERROFLUID SEAL AND SYSTEM
29
Patent #:
Issue Dt:
02/07/1984
Application #:
06464480
Filing Dt:
02/07/1983
Title:
FERROFLUID COMPOSITION AND METHOD OF MAKING AND USING SAME
30
Patent #:
Issue Dt:
04/24/1984
Application #:
06468333
Filing Dt:
02/22/1983
Title:
SELF-ACTIVATING FERROFLUID SEAL APPARATUS AND METHOD
31
Patent #:
Issue Dt:
05/01/1984
Application #:
06468339
Filing Dt:
02/22/1983
Title:
NONBURSTING MAGNETIC LIQUID SEALS FOR HIGH VACUUM APPLICATIONS
32
Patent #:
Issue Dt:
12/25/1984
Application #:
06497856
Filing Dt:
05/25/1983
Title:
FERROFLUID-POLE-PIECE-MAGNET APPARATUS
33
Patent #:
Issue Dt:
07/02/1985
Application #:
06534415
Filing Dt:
09/21/1983
Title:
FERROFLUID THRUST AND RADIAL BEARING ASSEMBLY
34
Patent #:
Issue Dt:
07/30/1985
Application #:
06565333
Filing Dt:
12/27/1983
Title:
COMPACT FERROFLUID SEAL AND BEARING ASSEMBLY
35
Patent #:
Issue Dt:
12/09/1986
Application #:
06569189
Filing Dt:
01/09/1984
Title:
BEARING ASSEMBLY WITH INTEGRATED FERROFLUID SEAL
36
Patent #:
Issue Dt:
07/02/1985
Application #:
06569190
Filing Dt:
01/09/1984
Title:
STABILIZED FERROFLUID-FERROFLUID SEAL APPARATUS AND METHOD
37
Patent #:
Issue Dt:
07/02/1985
Application #:
06574358
Filing Dt:
01/27/1984
Title:
SINGLE POLE PIECE MULTIPLE-STAGE FERROFLUID SEAL APPARATUS
38
Patent #:
Issue Dt:
10/23/1984
Application #:
06574359
Filing Dt:
01/27/1984
Title:
FERROFLUID SEAL APPARATUS AND METHOD
39
Patent #:
Issue Dt:
07/09/1985
Application #:
06606582
Filing Dt:
05/03/1984
Title:
HIGH-PRESSURE FERROFLUID SEAL APPARATUS
40
Patent #:
Issue Dt:
03/05/1985
Application #:
06606585
Filing Dt:
05/03/1984
Title:
FERROFLUID LINEAR SEAL APPARATUS
41
Patent #:
Issue Dt:
07/02/1985
Application #:
06606586
Filing Dt:
05/03/1984
Title:
RADIALLY POLARIZED MULTIPLE-STAGE FERROFLUID SEAL APPARATUS
42
Patent #:
Issue Dt:
03/26/1985
Application #:
06645399
Filing Dt:
08/29/1984
Title:
SELF-ACTIVATING FERROFLUID SEAL APPARATUS AND METHOD OF USE
43
Patent #:
Issue Dt:
03/26/1985
Application #:
06645399
Filing Dt:
08/29/1984
Title:
SELF-ACTIVATING FERROFLUID SEAL APPARATUS AND METHOD OF USE
44
Patent #:
Issue Dt:
10/08/1985
Application #:
06673545
Filing Dt:
11/20/1984
Title:
COAXIAL, MULTIPLE-SHAFT FERROFLUID SEAL APPARATUS
45
Patent #:
Issue Dt:
03/11/1986
Application #:
06673550
Filing Dt:
11/20/1984
Title:
COAXIAL, MULTIPLE-SHAFT FERROFLUID SEAL APPARATUS
46
Patent #:
Issue Dt:
05/05/1987
Application #:
06709056
Filing Dt:
03/06/1985
Title:
PULLING HEAD FOR A CRYSTAL GROWING FURNACE
47
Patent #:
Issue Dt:
08/05/1986
Application #:
06713757
Filing Dt:
03/20/1985
Title:
ELECTRICALLY CONDUCTIVE FERROFLUID COMPOSITIONS AND METHOD OF PREPARING AND USING SAME
48
Patent #:
Issue Dt:
08/05/1986
Application #:
06736388
Filing Dt:
05/21/1985
Title:
STABLE FERROFLUID COMPOSITION AND METHOD OF MAKING AND USING SAME
49
Patent #:
Issue Dt:
06/16/1987
Application #:
06773627
Filing Dt:
09/09/1985
Title:
ELECTRICALLY CONDUCTIVE FERROFLUID BEARING AND SEAL APPARATUS AND LOW- VISCOSITY ELECTRICALLY CONDUCTIVE FERROFLUID USED THEREIN
50
Patent #:
Issue Dt:
04/04/1989
Application #:
06779983
Filing Dt:
09/25/1985
Title:
FERROFLUID EXCLUSION SEAL AND METHOD OF ASSEMBLY
51
Patent #:
Issue Dt:
12/23/1986
Application #:
06833841
Filing Dt:
02/26/1986
Title:
FERROFLUID BEARING AND SEAL APPARATUS
52
Patent #:
Issue Dt:
09/08/1987
Application #:
06851799
Filing Dt:
04/14/1986
Title:
BEARING ASSEMBLY WITH INTEGRATED FERROFLUID SEAL
53
Patent #:
Issue Dt:
08/18/1987
Application #:
06875985
Filing Dt:
06/19/1986
Title:
LOW VISCOSITY, ELECTRICALLY CONDUCTIVE FERROFLUID COMPOSITION AND METHOD OF MAKING AND USING SAME
54
Patent #:
Issue Dt:
08/18/1987
Application #:
06875985
Filing Dt:
06/19/1986
Title:
LOW VISCOSITY, ELECTRICALLY CONDUCTIVE FERROFLUID COMPOSITION AND METHOD OF MAKING AND USING SAME
55
Patent #:
Issue Dt:
09/15/1987
Application #:
06933485
Filing Dt:
11/21/1986
Title:
FERROFLUID SEAL FOR A STATIONARY SHAFT AND A ROTATING HUB
56
Patent #:
Issue Dt:
01/10/1989
Application #:
07012193
Filing Dt:
02/09/1987
Title:
COMPACT FERROFLUIDIC ELECTRICALLY CONDUCTING SEALED BEARING
57
Patent #:
Issue Dt:
09/20/1988
Application #:
07020460
Filing Dt:
03/02/1987
Title:
COMPACT MAGNETIC FLUID LOW PRESSURE SEAL
58
Patent #:
Issue Dt:
03/22/1988
Application #:
07054412
Filing Dt:
05/26/1987
Title:
LOW VISCOSITY, ELECTRICALLY CONDUCTIVE FERROFLUID COMPOSITION AND METHOD OF MAKING AND USING SAME
59
Patent #:
Issue Dt:
05/16/1989
Application #:
07068012
Filing Dt:
06/29/1987
Title:
COMPACT LONG-LIFE MAGNETIC FLUID SEAL
60
Patent #:
Issue Dt:
01/02/1990
Application #:
07182510
Filing Dt:
04/18/1988
Title:
TAPERED FERROFLUID SEAL
61
Patent #:
Issue Dt:
04/25/1989
Application #:
07215735
Filing Dt:
07/06/1988
Title:
COMPACT MAGNETIC FLUID LOW PRESSURE SEAL
62
Patent #:
Issue Dt:
05/22/1990
Application #:
07229640
Filing Dt:
08/08/1988
Title:
FERROFLUID SEAL WITH EPOXY POLE PIECES
63
Patent #:
Issue Dt:
02/06/1990
Application #:
07263539
Filing Dt:
10/27/1988
Title:
COMPACT FERROFLUIDIC ELECTRICALLY CONDUCTING SEALED BEARING
64
Patent #:
Issue Dt:
09/12/1989
Application #:
07267263
Filing Dt:
11/04/1988
Title:
LONG-LIFE MULTI-STAGE FERROFLUID SEALS INCORPORATING A FERROFLUID RESERVOIR
65
Patent #:
Issue Dt:
Application #:
UNAVAILABLE
Filing Dt:
Title:
66
Patent #:
Issue Dt:
Application #:
UNAVAILABLE
Filing Dt:
Title:
Assignor
1
Exec Dt:
10/13/1990
Assignee
1
111 WESTMINSTER STREET
PROVIDENCE, RHODE ISLAND 02903
Correspondence name and address
BROWN RUDNICK FREED & GESMER
ONE FINANCIAL CENTER
BOSTON, MA 02111

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