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Patent Assignment Assignor Details

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

Assignor Name : WESTERN ATLAS INTERNATIONAL, INC.

Total Assignments: 8

Assignment: 1

Reel/Frame:	007185/0581			Pages:	14
		Recorded:	11/02/1994
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).

Assignor

WESTERN ATLAS INTERNATIONAL, INC.

Exec Dt:

09/30/1994

Assignee

CORE HOLDINGS B.V.

C/O CORE LAB HOLDINGS, INC.

5295 HOLLISTER ROAD

HOUSTON, TEXAS 77040

Properties

Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #
4119404	NONE		05812899	4276770	NONE		06061473	4366701	NONE		06159512
4342219	NONE		06227106	4419314	NONE		06266990	4402229	NONE		06284485
4419879	NONE		06312107	4509904	NONE		06538774	4562726	NONE		06626631
4566311	NONE		06649120	4587857	NONE		06662279	4638662	NONE		06796885
4685326	NONE		06837800	4739663	NONE		07006104	4799389	NONE		07016335
4839516	NONE		07118156	4834210	NONE		07136148	4845503	NONE		07152754
4864846	NONE		07259523	5009100	NONE		07437687	5179598	NONE		07531128
5178005	NONE		07546872	5193059	NONE		07784641	5237854	NONE		07873458
5571962	NONE		08106368	5360972	NONE		08107953	5874494	NONE		08917486

Correspondence name and address
	NATIONAL CODE CORPORATION
	KATHLEEN KANE
	225 W. 34TH ST., SUITE 2110
	NEW YORK, NY 10122

Assignment: 2

Reel/Frame:	007644/0138			Pages:	41
		Recorded:	08/28/1995
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).

Assignor

WESTERN ATLAS INTERNATIONAL, INC.

Exec Dt:

06/30/1995

Assignee

I/O EXPLORATION PRODUCTS, INC.

12300 PARC CREST DRIVE

STAFFORD, TEXAS 77477

Properties

Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #
4253538	NONE		05901896	4187493	NONE		05914709	4296827	NONE		05922952
4230201	NONE		05929883	4214128	NONE		05946897	4224474	NONE		05946898
4276620	NONE		05955261	4253164	NONE		05956476	4211300	NONE		06005654
4257053	NONE		06010797	4259563	NONE		06021415	4225009	NONE		06026975
4219097	NONE		06026977	4246979	NONE		06027198	4219098	NONE		06027199
4300653	NONE		06032596	4285052	NONE		06060710	4260211	NONE		06069208
4281403	NONE		06074587	4319347	NONE		06077260	4248521	NONE		06077895
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4317185	NONE		06156968	4296483	NONE		06164622	4324311	NONE		06180788
4351036	NONE		06190674	4320468	NONE		06198079	4510585	NONE		06199536
4375089	NONE		06200852	4360729	NONE		06207635	4394616	NONE		06207636
4408307	NONE		06209638	4429898	NONE		06242358	4357577	NONE		06273952
4519052	NONE		06274216	4450928	NONE		06289444	4484314	NONE		06294585
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4470134	NONE		06362352	4490606	NONE		06371782	4479264	NONE		06371951
4536862	NONE		06381102	4496015	NONE		06412428	4616352	NONE		06435124
4654836	NONE		06435125	4541079	NONE		06461399	4458344	NONE		06477483
4623033	NONE		06499055	4455500	NONE		06517899	4526430	NONE		06551164
4505014	NONE		06562920	4637002	NONE		06586156	4632215	NONE		06602559
4694436	NONE		06615086	4696539	NONE		06633704	4532450	NONE		06640300
4630884	NONE		06647226	4519053	NONE		06655999	4685094	NONE		06676524
4908802	NONE		06676621	4692912	NONE		06676718	4623991	NONE		06676729
4639905	NONE		06677292	4648082	NONE		06707957	4637000	NONE		06747270
4676337	NONE		06771803	4639729	NONE		06779073	4726650	NONE		06780884
4670863	NONE		06799883	4771857	NONE		06816391	4718049	NONE		06821905
4682669	NONE		06830487	4730891	NONE		06839728	4720267	NONE		06868320
4733378	NONE		06871329	4766576	NONE		06896342	4692907	NONE		06911718
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4930113	NONE		07331615	4922473	NONE		07333295	5115880	NONE		07349058
5043949	NONE		07366832	5010531	NONE		07415559	5001679	NONE		07472197
4953146	NONE		07477171	5046056	NONE		07533656	5046054	NONE		07538387
5172345	NONE		07613825	5183966	NONE		07615237	5128905	NONE		07634125
5126980	NONE		07646967	5152944	NONE		07673621	5134593	NONE		07701747
5212669	NONE		07713964	5228010	NONE		07723137	5182558	NONE		07782111
5313020	NONE		07890942	5331606	NONE		07892541	5271081	NONE		07900358
5263007	NONE		07937596	5459695	NONE		07938408	5365493	NONE		07961380
5510577	NONE		08031578	5408440	NONE		08034364	5475652	NONE		08085502
5341348	NONE		08091217	5434828	NONE		08129955	5450374	NONE		08146608
5384753	NONE		08162484	5459285	NONE		08189807	5401919	NONE		08248626
5592439	NONE		08393721	5592440	NONE		08414583	5627798	NONE		08435889
4195991	NONE		UNAVAILABLE

Correspondence name and address
	TIM HEADLEY
	HAYNES AND BOONE, L.L.P.
	4300 FIRST INTERSTATE BANK PLAZA
	1000 LOUISIANA
	HOUSTON, TX 77002

Assignment: 3

Reel/Frame:	007815/0841			Pages:	56
		Recorded:	02/23/1996
Conveyance:	CORRECTED ASSIGNMENT

Assignor

WESTERN ATLAS INTERNATIONAL, INC.

Exec Dt:

06/30/1995

Assignee

I/O EXPLORATION PRODUCTS (U.S.A), INC.

12300 PARC CREST DRIVE

STAFFORD, TEXAS 77477

Properties

Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #
4253538	NONE		05901896	4187493	NONE		05914709	4296827	NONE		05922952
4230201	NONE		05929883	4214128	NONE		05946897	4224474	NONE		05946898
4276620	NONE		05955261	4253164	NONE		05956476	4211300	NONE		06005654
4257053	NONE		06010797	4259563	NONE		06021415	4225009	NONE		06026975
4219097	NONE		06026977	4246979	NONE		06027198	4219098	NONE		06027199
4300653	NONE		06032596	4285052	NONE		06060710	4260211	NONE		06069208
4281403	NONE		06074587	4319347	NONE		06077260	4248521	NONE		06077895
4333143	NONE		06095920	4321675	NONE		06113854	4323994	NONE		06136291
4317185	NONE		06156968	4296483	NONE		06164622	4324311	NONE		06180788
4351036	NONE		06190674	4320468	NONE		06198079	4510585	NONE		06199536
4375089	NONE		06200852	4360729	NONE		06207635	4394616	NONE		06207636
4408307	NONE		06209638	4429898	NONE		06242358	4357577	NONE		06273952
4519052	NONE		06274216	4450928	NONE		06289444	4484314	NONE		06294585
4500979	NONE		06302873	4589100	NONE		06316596	4442755	NONE		06342274
4458777	NONE		06351054	4682831	NONE		06357459	4503929	NONE		06359343
4470134	NONE		06362352	4490606	NONE		06371782	4479264	NONE		06371951
4536862	NONE		06381102	4496015	NONE		06412428	4616352	NONE		06435124
4654836	NONE		06435125	4541079	NONE		06461399	4458344	NONE		06477483
4623033	NONE		06499055	4455500	NONE		06517899	4526430	NONE		06551164
4505014	NONE		06562920	4637002	NONE		06586156	4632215	NONE		06602559
4694436	NONE		06615086	4696539	NONE		06633704	4532450	NONE		06640300
4630884	NONE		06647226	4519053	NONE		06655999	4685094	NONE		06676524
4908802	NONE		06676621	4692912	NONE		06676718	4623991	NONE		06676729
4639905	NONE		06677292	4648082	NONE		06707957	4637000	NONE		06747270
4676337	NONE		06771803	4639729	NONE		06779073	4726650	NONE		06780884
4670863	NONE		06799883	4771857	NONE		06816391	4718049	NONE		06821905
4682669	NONE		06830487	4730891	NONE		06839728	4720267	NONE		06868320
4733378	NONE		06871329	4766576	NONE		06896342	4692907	NONE		06911718
4680741	NONE		06913558	4791617	NONE		07071510	4825973	NONE		07087003
4771858	NONE		07104836	4838379	NONE		07113138	4809243	NONE		07121271
4775027	NONE		07122326	4858205	NONE		07236694	5058080	NONE		07280097
4955012	NONE		07281858	4855967	NONE		07289506	4928785	NONE		07289949
4930113	NONE		07331615	4922473	NONE		07333295	5115880	NONE		07349058
5043949	NONE		07366832	5010531	NONE		07415559	5001679	NONE		07472197
4953146	NONE		07477171	5046056	NONE		07533656	5046054	NONE		07538387
5172345	NONE		07613825	5183966	NONE		07615237	5128905	NONE		07634125
5126980	NONE		07646967	5152944	NONE		07673621	5134593	NONE		07701747
5212669	NONE		07713964	5228010	NONE		07723137	5182558	NONE		07782111
5313020	NONE		07890942	5331606	NONE		07892541	5271081	NONE		07900358
5263007	NONE		07937596	5459695	NONE		07938408	5365493	NONE		07961380
5510577	NONE		08031578	5408440	NONE		08034364	5475652	NONE		08085502
5341348	NONE		08091217	5434828	NONE		08129955	5450374	NONE		08146608
5384753	NONE		08162484	5459285	NONE		08189807	5401919	NONE		08248626
5592439	NONE		08393721	5592440	NONE		08414583	5627798	NONE		08435889
4195991	NONE		UNAVAILABLE

Correspondence name and address
	HAYNES AND BOONE, L.L.P.
	TIM HEADLEY
	4300 FIRST INTERSTATE BANK PLAZA
	1000 LOUISIANA
	HOUSTON, TX 77002

Assignment: 4

Reel/Frame:	007908/0355			Pages:	5
		Recorded:	04/22/1996
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).

Assignor

WESTERN ATLAS INTERNATIONAL, INC.

Exec Dt:

03/29/1996

Assignee

LANDMARK GRAPHICS CORPORATION

PATTI MASSARO

15150 MEMORIAL DRIVE

HOUSTON, TEXAS 77079

Properties

Pat #

Pub #

Intl #

App #

Pat #

Pub #

Intl #

App #

5416750

NONE

08218668

5617548

NONE

08393252

Correspondence name and address
	WINSTEAD SECHREST & MINICK
	ELIZABETH R. HALL
	910 TRAVIS, STE. 1700
	HOUSTON, TX 77002

Assignment: 5

Reel/Frame:	012729/0567			Pages:	295
		Recorded:	03/21/2002
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).

Assignor

WESTERN ATLAS INTERNATIONAL, INC.

Exec Dt:

09/14/2001

Assignee

WESTERNGECO, L.L.C.

P.O. BOX 2469

10001 RICHMOND AVENUE

HOUSTON, TEXAS 77042

Properties

Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #
4524434	NONE		06392146	4675851	NONE		06416532	4547869	NONE		06482007
4566083	NONE		06500922	4512001	NONE		06585032	4685070	NONE		06637465
4633402	NONE		06669502	5051965	NONE		06724884	4742497	NONE		06799176
4679174	NONE		06825698	4745585	NONE		06847950	4686654	NONE		06891475
4721180	NONE		06935280	4937794	NONE		07000053	4739858	NONE		07020549
4888742	NONE		07116388	4992992	NONE		07260793	4878204	NONE		07264090
4918668	NONE		07304786	4953657	NONE		07312360	4937793	NONE		07358887
4935904	NONE		07363622	4979150	NONE		07398809	4935903	NONE		07398813
4969130	NONE		07414928	4982374	NONE		07425798	5185726	NONE		07568248
5144588	NONE		07637193	5097452	NONE		07703463	5138583	NONE		07704231
5309360	NONE		07704363	5233569	NONE		07739140	5163028	NONE		07767248
5128904	NONE		07775112	5235556	NONE		07805397	5235554	NONE		07849998
5235555	NONE		07965798	5353223	NONE		07967673	5293352	NONE		08001444
5299172	NONE		08013052	5285422	NONE		08029294	5511039	NONE		08071515
5392255	NONE		08075939	5450371	NONE		08079012	5502687	NONE		08086166
5365492	NONE		08101949	5408441	NONE		08109833	5479376	NONE		08114558
5396472	NONE		08128596	5448531	NONE		08238426	5508973	NONE		08254306
5442591	NONE		08263056	5508914	NONE		08314240	5530679	NONE		08324384
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5511040	NONE		08384778	5524100	NONE		08399835	5740342	NONE		08417643
5497356	NONE		08435985	5623455	NONE		08450199	5506818	NONE		08496984
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5724307	NONE		08838885	5757722	NONE		08859867	6084825	NONE		08866623
6021092	NONE		08871505	6035256	NONE		08918636	5986973	NONE		08923150
5978316	NONE		08940088	5987125	NONE		08990505	6028817	NONE		09000769
6000479	NONE		09014349	5969297	NONE		09014350	6002339	NONE		09016049
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6021091	NONE		09234334	6076630	NONE		09244853	6024344	NONE		09251845
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6169959	NONE		09320954	6288972	NONE		09325323	6148952	NONE		09541194

Correspondence name and address
	WESTERN GECO INTELLECTUAL PROPERTY DEPT
	DAVID S. FIGATNER
	10001 RICHMOND AVENUE
	HOUSTON, TX 44042-4299

Assignment: 6

Reel/Frame:	012822/0001			Pages:	131
		Recorded:	04/03/2002
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).

Assignor

WESTERN ATLAS INTERNATIONAL, INC.

Exec Dt:

09/14/2001

Assignee

WESTERNGECO, L.L.C.

P.O. BOX 2469, HOUSTON, TX 77252-2469

10001 RICHMOND AVENUE

HOUSTON, TEXAS 77042

Properties

Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #
4545039	NONE		06416531	4581723	NONE		06485704	4567583	NONE		06535215
4648080	NONE		06620886	4672546	NONE		06669501	4633401	NONE		06669505
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4743113	NONE		06770761	4688200	NONE		06777322	4715020	NONE		06925810
4809235	NONE		07101386	4797861	NONE		07175274	4970698	NONE		07214169
4866679	NONE		07230909	4943950	NONE		07363666	4992993	NONE		07539239
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5555218	NONE		08394471	5757852	NONE		08787310	5979838	NONE		08791592
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6230840	NONE		09173624	6161495	NONE		09285219	6229760	NONE		09285224
6253549	NONE		09299962	6285956	NONE		09304506	6141623	NONE		09306122
6161076	NONE		09318282	6288976	NONE		09584437	6510390	NONE		09679082
6292755	US20010005813		09754135

Correspondence name and address
	WESTERNGECO INTELLECTUAL PROPERTY DEPT.
	DAVID S. FIGATNER
	P. O. BOX 2469
	10001 RICHMOND AVENUE
	HOUSTON, TX 77042-4299

Assignment: 7

Reel/Frame:	013352/0346			Pages:	75
		Recorded:	10/04/2002
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).

Assignor

WESTERN ATLAS INTERNATIONAL, INC.

Exec Dt:

09/14/2001

Assignee

WESTERNGECO L.L.C.

P.O. BOX 2469

INTELLECTUAL PROPERTY DEPARTMENT

HOUSTON, TEXAS 77042-4299

Properties

Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #	Pat #	Pub #	Intl #	App #
6424920	NONE		09398175	6512980	NONE		09421163	6590831	NONE		09433666
6540034	NONE		09561768	6470276	NONE		09575261	6657921	NONE		09584439

Correspondence name and address
	WESTERNGECO INTELLECTUAL PROPERTY DEPT.
	DAVID S. FIGATNER
	10001 RICHMOND AVENUE
	P.O. BOX 2469
	HOUSTON, TX 77042-4299

Assignment: 8

Reel/Frame:	014920/0314			Pages:	3
		Recorded:	01/22/2004
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).

Assignor

WESTERN ATLAS INTERNATIONAL, INC.

Exec Dt:

01/22/2004

Assignee

BAKER HUGHES OILFIELD OPERATIONS, INC.

3900 ESSEX LANE

STE. 1200

HOUSTON, TEXAS 77027

Properties

Pat #

Pub #

Intl #

App #

Pat #

Pub #

Intl #

App #

4507957

NONE

06495313

5303775

NONE

07976488

Correspondence name and address
	BAKER ATLAS, A DIVISION OF
	BAKER HUGHES OILFIELD OPERATIONS, INC.
	PO BOX 1407
	HOUSTON, TX 77251-1407

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