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Patent Assignment Assignor Details

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Assignor Name : NL INDUSTRIES, INC.

Total Assignments: 10

Assignment: 1

Reel/Frame:	003841/0028			Pages:	7
		Recorded:	03/16/1981
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST.

Assignor

NL INDUSTRIES, INC.

Exec Dt:

10/17/1979

Assignee

ASSOCIATED LEAD INC.

2545 ARAMINGO AVENUE

A CORP. OF DE.

PHILDELPHIA, PENNSYLVANIA

Properties

Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #
3050499	NONE		03723138	3072586	NONE		03740541	3106539	NONE		03856649
3225075	NONE		04044903	3235521	NONE		04047594	3245948	NONE		04092766
3225001	NONE		04098301	3355471	NONE		04358373	3546150	NONE		04591964
3552916	NONE		04592052	3440213	NONE		04643766	3562180	NONE		04748945
3645944	NONE		05078556	3824202	NONE		05192630	3880773	NONE		05360091
4026852	NONE		05548270	4279806	NONE		06063597	4287118	NONE		06077057

Correspondence name and address
	KENYON & KENYON
	59 MAIDEN LANE
	NEW YORK, N.Y. 10038

Assignment: 2

Reel/Frame:	003852/0761			Pages:	5
		Recorded:	05/13/1981
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST.

Assignor

NL INDUSTRIES, INC.

Exec Dt:

10/17/1979

Assignee

ASSOCIATED LEAD INC. , A CORP.OF DEL.

2545 ARAMINGO AVE.

PHILADELPHI, PENNSYLVANIA

Properties

Pat #

Pub #

Intl #

App #

Pat #

Pub #

Intl #

App #

Pat #

Pub #

Intl #

App #

3244562

NONE

04089735

3244563

NONE

04235316

3322496

NONE

04454370

Correspondence name and address
	KENYON AND KENYON
	59 MAIDEN LANE
	NEW YORK, N.Y. 10038

Assignment: 3

Reel/Frame:	004661/0323			Pages:	35
		Recorded:	11/21/1986
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST.

Assignor

NL INDUSTRIES, INC.

Exec Dt:

11/18/1986

Assignee

NL CHEMICALS, INC., A CORP. OF DE.

1230 AVENUE OF THE AMERICAS

NEW YORK, NEW YORK 10020

Properties

Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #
3444892	NONE		04556515	3468633	NONE		04558337	3492097	NONE		04586709
3442137	NONE		04588078	3446590	NONE		04588328	3453412	NONE		04602099
3446579	NONE		04604389	3446579	NONE		04604389	3446579	NONE		04604389
3453129	NONE		04621748	3472700	NONE		04629051	3453128	NONE		04632925
3524751	NONE		04644082	3709984	NONE		04648955	3514043	NONE		04658526
3457037	NONE		04660587	3472612	NONE		04666932	3486847	NONE		04668035
3480386	NONE		04670555	3542575	NONE		04690735	3529985	NONE		04693087
3558333	NONE		04707315	3549091	NONE		04713215	3557014	NONE		04714457
3518053	NONE		04721584	3561968	NONE		04731326	3529931	NONE		04744438
3632527	NONE		04752455	3577253	NONE		04755776	3557620	NONE		04808908
3529933	NONE		04839108	3647414	NONE		04846343	3625650	NONE		04853479
3615204	NONE		04860015	3617217	NONE		04860016	3615182	NONE		04871318
3596438	NONE		04873563	3681047	NONE		04879595	3681289	NONE		05005142
3647495	NONE		05006949	3649322	NONE		05030219	3662605	NONE		05036918
3660021	NONE		05043389	3698894	NONE		05065724	3681101	NONE		05079708
3674528	NONE		05083166	3719468	NONE		05091486	3681133	NONE		05095891
3734761	NONE		05108438	3765868	NONE		05160449	3789039	NONE		05212657
3784391	NONE		05212685	3774730	NONE		05245329	3827901	NONE		05274271
3856546	NONE		05277139	3832206	NONE		05288391	3822338	NONE		05296879
3848059	NONE		05317676	3847640	NONE		05344939	3845006	NONE		05358035
3846453	NONE		05358046	3884871	NONE		05374937	3917804	NONE		05385850
3928060	NONE		05387919	3899522	NONE		05391121	3860545	NONE		05412556
3912532	NONE		05434028	3928272	NONE		05454594	3941668	NONE		05488510
3956244	NONE		05536224	3969293	NONE		05561276	4045393	NONE		05644312
4287086	NONE		05749323	4105578	NONE		05771099	4095993	NONE		05779140
4193806	NONE		05810403	4081496	NONE		05810478	4116866	NONE		05812099
4216135	NONE		05890213	4216135	NONE		05890213	4208218	NONE		05890809
4191525	NONE		05891770	4208496	NONE		05894842	4226754	NONE		05913898
4273746	NONE		05950073	4269810	NONE		05950074	4220628	NONE		05950075
4270977	NONE		06090207	4274987	NONE		06098578	4274987	NONE		06098578
4269811	NONE		06126625	4288415	NONE		06151998	4288416	NONE		06151999
4275040	NONE		06154680	4275041	NONE		06188805	4288417	NONE		06201938
4288418	NONE		06202039	4412018	NONE		06207542	4450095	NONE		06207544
4308416	NONE		06217495	4401795	NONE		06223441	4401795	NONE		06223441
4336236	NONE		06247441	4348580	NONE		06248619	4342858	NONE		06248619
4342858	NONE		06248619	4364908	NONE		06286305	4391928	NONE		06299360
4391637	NONE		06313031	4410364	NONE		06313032	4434075	NONE		06313033
4434076	NONE		06313034	4517112	NONE		06348641	4475950	NONE		06371405
4386059	NONE		06376094	4499233	NONE		06491039	4436862	NONE		06504156
4505886	NONE		06510249	4505886	NONE		06510249	4659571	NONE		06713897
4659571	NONE		06713897	4615918	NONE		06753456	4695402	NONE		06767599
4664820	NONE		06792146	3503785	NONE		UNAVAILABLE

Correspondence name and address
	NL INDUSTRIES, INC.
	P.O. BOX 60087
	HOUSTON, TEXAS 77205

Assignment: 4

Reel/Frame:	004688/0852			Pages:	3
		Recorded:	04/03/1987
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST.

Assignor

NL INDUSTRIES, INC.

Exec Dt:

03/05/1987

Assignee

NL CHEMICALS, INC.

1230 AVENUE OF THE AMERICAS

NEW YORK, NEW YORK 10020

Properties

Pat #

Pub #

Intl #

App #

Pat #

Pub #

Intl #

App #

Pat #

Pub #

Intl #

App #

3661782

NONE

05066554

3789039

NONE

05212657

3884871

NONE

05374937

3860545

NONE

05412556

3912532

NONE

05434028

Correspondence name and address
	NL INDUSTRIES, INC.
	P.O. BOX 60087
	HOUSTON, TX 77205

Assignment: 5

Reel/Frame:	005370/0475			Pages:	8
		Recorded:	07/05/1990
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST.

Assignor

NL INDUSTRIES, INC.

Exec Dt:

08/24/1987

Assignee

CAMCO, INCORPORATED, A CORP. OF TX

7030 ARDMORE,

HOUSTON,, TEXAS 77059

Properties

Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #
4350215	NONE		06189370	4453605	NONE		06259182	4505342	NONE		06443657
4538690	NONE		06468668	4558753	NONE		06468669	4605157	NONE		06575555
4570725	NONE		06575556	4640375	NONE		06578182	4593777	NONE		06578183
4669556	NONE		06693848	4718505	NONE		06754506	4660659	NONE		06763031
4676324	NONE		06823681	4711144	NONE		06870075	4727946	NONE		06876847
4790396	NONE		06879137	4862977	NONE		07033072

Correspondence name and address
	FULBRIGHT & JAWORSKI
	1301 MCKINNEY, STE. 5100
	HOUSTON, TX 77010-3095

Assignment: 6

Reel/Frame:	006372/0248			Pages:	15
		Recorded:	11/02/1992
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST.

Assignor

NL INDUSTRIES, INC.

Exec Dt:

11/20/1987

Assignee

EXXON CHEMICAL PATENTS, INC.

9 OLD KINGS HIGHWAY SOUTH

DARIEN, CONNECTICUT 06820

Properties

Pat #

Pub #

Intl #

App #

Pat #

Pub #

Intl #

App #

Pat #

Pub #

Intl #

App #

4216076

NONE

06058126

4515759

NONE

06549274

4612109

NONE

06734958

4690805

NONE

06838379

4758371

NONE

07062207

Correspondence name and address
	WALTER R. BROOKHART
	BROWNING, BUSHMAN, ANDERSON & BROOKHART
	5718 WESTHEIMER, SUITE 1800
	HOUSTON, TX 77057

Assignment: 7

Reel/Frame:	004847/0165			Pages:	15
		Recorded:	04/04/1988
Conveyance:	LICENSE (SEE DOCUMENT FOR DETAILS).

Assignor

NL INDUSTRIES, INC.

Exec Dt:

03/01/1988

Assignee

DREXEL EQUIPMENT (UK) LTD.

AN ENGLISH REGISTERED COMPANY

LONDON, ENGLAND

Properties

Pat #

Pub #

Intl #

App #

Pat #

Pub #

Intl #

App #

4163324

NONE

05880873

4510696

NONE

06515716

Correspondence name and address
	ARNOLD, WHITE & DURKEE
	P.O. BOX 4433
	HOUSTON, TEXAS 77210

Assignment: 8

Reel/Frame:	005031/0750			Pages:	2
		Recorded:	03/20/1989
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST.

Assignor

NL INDUSTRIES, INC.

Exec Dt:

02/23/1989

Assignee

REED TOOL COMPANY, LTD., A CORP. OF NORTHERN IRELAND

MONKSTOWN, NEWTOWNABBEY

COUNTY ANTRIM, NORTHERN IRELAND

Properties

Pat #

Pub #

Intl #

App #

Pat #

Pub #

Intl #

App #

Pat #

Pub #

Intl #

App #

4570725

NONE

06575556

4669556

NONE

06693848

4862977

NONE

07033072

Correspondence name and address
	MARGARET E. ANDERSON
	BROWNING, BUSHMAN, ZAMECKI & ANDERSON
	5718 WESTHEIMER, STE 1800
	HOUSTON, TX 77057

Assignment: 9

Reel/Frame:	005031/0215			Pages:	3
		Recorded:	03/13/1989
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST.

Assignor

NL INDUSTRIES, INC.

Exec Dt:

03/09/1989

Assignee

NL CHEMICALS, INC., A CORP. OF DE

WYCKOFFS MILL RD.

HIGHSTOWN, NEW JERSEY 08520

Properties

Pat #

Pub #

Intl #

App #

Pat #

Pub #

Intl #

App #

3681047

NONE

04879595

3765868

NONE

05160449

Correspondence name and address
	DOUGLAS H. MAY
	NL INDUSTRIES, INC.
	P.O. BOX 60087
	HOUSTON, TX 77205

Assignment: 10

Reel/Frame:	005221/0879			Pages:	3
		Recorded:	11/21/1989
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST.

Assignor

NL INDUSTRIES, INC.

Exec Dt:

08/04/1989

Assignee

NUCLEAR ASSURANCE CORPORATION, A DE CORP.

6251 CROOKED CREEK RD.

NORCROSS, GEORGIA 30092

Properties

Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #
3731101	NONE		05133966	3732423	NONE		05146010	3797860	NONE		05146245
3731102	NONE		05146355	3751669	NONE		05146356	3770964	NONE		05146398
3774037	NONE		05146399	3780306	NONE		05147519	4116337	NONE		05681435
4197467	NONE		05861558

Correspondence name and address
	THOMAS & KENNEDY
	100 GALLERIA PARKWAY N.W., STE. 1550
	ATLANTA, GA 30339

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