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Patent Assignment Details

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Reel/Frame:	005573/0001			Pages:	6
		Recorded:	11/06/1990
Conveyance:	ASSIGNMENT OF ASSIGNORS INTEREST.

Total properties: 64

Patent #:	3909423	Issue Dt:		Application #:	05361236	Filing Dt:
Title:

Patent #:	3949811	Issue Dt:		Application #:	05462325	Filing Dt:
Title:

Patent #:	3971440	Issue Dt:		Application #:	05611751	Filing Dt:
Title:

Patent #:	4120361	Issue Dt:	10/17/1978	Application #:	05612514	Filing Dt:	09/11/1975
Title:	METHOD FOR REDUCING THE PERMEABILITY OF SUBTERRANEAN FORMATIONS TO BRINES

Patent #:	4103742	Issue Dt:		Application #:	05643983	Filing Dt:
Title:

Patent #:	4110226	Issue Dt:		Application #:	05764924	Filing Dt:
Title:

Patent #:	4212747	Issue Dt:	07/15/1980	Application #:	05868965	Filing Dt:	01/12/1978
Title:	SHEAR-THICKENING COMPOSITIONS

Patent #:	4191657	Issue Dt:	03/04/1980	Application #:	05902122	Filing Dt:	05/02/1978
Title:	COMPOSITIONS FOR ACIDIZING SUBTERRANEAN FORMATIONS

Patent #:	4240505	Issue Dt:	12/23/1980	Application #:	05902652	Filing Dt:	05/04/1978
Title:	WELL TREATING AND COMPOSITIONS

Patent #:	4205724	Issue Dt:	06/03/1980	Application #:	05908607	Filing Dt:	05/23/1978
Title:	WELL TREATING COMPOSITIONS

Patent #:	4239629	Issue Dt:	12/16/1980	Application #:	05912689	Filing Dt:	06/05/1978
Title:	CARBOXYMETHYLHYDROXYETHYL CELLULOSE IN DRILLING, WORKOVER AND COMPLETION FLUIDS

Patent #:	4246124	Issue Dt:	01/20/1981	Application #:	05925357	Filing Dt:	07/17/1978
Title:	GELLED COMPOSITIONS AND WELL TREATING

Patent #:	4244826	Issue Dt:	01/13/1981	Application #:	05925359	Filing Dt:	07/17/1978
Title:	WELL TREATING

Patent #:	4223123	Issue Dt:	09/16/1980	Application #:	06043188	Filing Dt:	05/29/1979
Title:	ALIPHATIC PHENOXY POLYPHTHALOCYANINE

Patent #:	4289632	Issue Dt:	09/15/1981	Application #:	06077215	Filing Dt:	09/20/1979
Title:	LOST CIRCULATION MATERIAL FOR SEALING PERMEABLE FORMATIONS

Patent #:	4300634	Issue Dt:	11/17/1981	Application #:	06100085	Filing Dt:	12/04/1979
Title:	FOAMABLE COMPOSITIONS AND FORMATIONS TREATMENT

Patent #:	4289203	Issue Dt:	09/15/1981	Application #:	06110438	Filing Dt:	01/08/1980
Title:	OIL DISPLACEMENT METHOD USING SHEAR-THICKENING COMPOSITIONS

Patent #:	4293036	Issue Dt:	10/06/1981	Application #:	06110439	Filing Dt:	01/08/1980
Title:	SHEAR-THICKENING COMPOSITIONS

Patent #:	4321968	Issue Dt:	03/30/1982	Application #:	06152227	Filing Dt:	05/22/1980
Title:	METHODS OF USING AQUEOUS GELS

Patent #:	4389320	Issue Dt:	06/21/1983	Application #:	06260471	Filing Dt:	05/04/1981
Title:	FOAMABLE COMPOSITIONS AND FORMATIONS TREATMENT

Patent #:	4369844	Issue Dt:	01/25/1983	Application #:	06278127	Filing Dt:	06/29/1981
Title:	METHOD USING LOST CIRCULATION MATERIAL FOR SEALING PERMEABLE FORMATIONS

Patent #:	4425241	Issue Dt:	01/10/1984	Application #:	06331031	Filing Dt:	12/16/1981
Title:	DRILLING FLUIDS

Patent #:	4440228	Issue Dt:	04/03/1984	Application #:	06343638	Filing Dt:	01/28/1982
Title:	GELLED COMPOSITIONS AND WELL TREATING

Patent #:	4451389	Issue Dt:	05/29/1984	Application #:	06343641	Filing Dt:	01/28/1982
Title:	AQUEOUS GELS

Patent #:	4455241	Issue Dt:	06/19/1984	Application #:	06349277	Filing Dt:	02/16/1982
Title:	WELLBORE FLUID

Patent #:	4502969	Issue Dt:	03/05/1985	Application #:	06367824	Filing Dt:	04/12/1982
Title:	WORKOVER AND COMPLETION FLUIDS

Patent #:	4476033	Issue Dt:	10/09/1984	Application #:	06403373	Filing Dt:	07/30/1982
Title:	METHOD AND COMPOSITIONS FOR ACIDIZING AND FRACTURING WELLS

Patent #:	4514308	Issue Dt:	04/30/1985	Application #:	06518703	Filing Dt:	07/29/1983
Title:	SULFONATED ASPHALT

Patent #:	4548982	Issue Dt:	10/22/1985	Application #:	06528922	Filing Dt:	09/02/1983
Title:	DRILLING FLUIDS

Patent #:	4578201	Issue Dt:	03/25/1986	Application #:	06586504	Filing Dt:	03/05/1984
Title:	N-VINYL LACTAM/UNSATURATED AMIDE COPOLYMERS IN THICKENED ACID COMPOSITIONS

Patent #:	4559149	Issue Dt:	12/17/1985	Application #:	06618296	Filing Dt:	06/07/1984
Title:	WORKOVER FLUID

Patent #:	4604216	Issue Dt:	08/05/1986	Application #:	06619108	Filing Dt:	06/11/1984
Title:	DRILLING FLUIDS

Patent #:	4618433	Issue Dt:	10/21/1986	Application #:	06636054	Filing Dt:	07/30/1984
Title:	DRILLING FLUIDS AND THINNERS THEREFOR

Patent #:	4704214	Issue Dt:	11/03/1987	Application #:	06659805	Filing Dt:	10/11/1984
Title:	DRILLING FLUID

Patent #:	4741868	Issue Dt:	05/03/1988	Application #:	06708142	Filing Dt:	03/04/1985
Title:	PRODUCTION OF SULFONATED ASPHALT

Patent #:	4645609	Issue Dt:	02/24/1987	Application #:	06737365	Filing Dt:	05/23/1985
Title:	SULFONATED ASPHALT/CAUSTICIZED LIGNITE BLEND

Patent #:	4690219	Issue Dt:	09/01/1987	Application #:	06805030	Filing Dt:	12/05/1985
Title:	ACIDIZING USING N-VINYL LACTUM/UNSATURATED AMIDE COPOLYMERS

Patent #:	4735659	Issue Dt:	04/05/1988	Application #:	06897490	Filing Dt:	08/18/1986
Title:	COMPOSITIONS AND A PROCESS FOR PREPARING WATER DISPERSIBLE POLYMERS

Patent #:	4726912	Issue Dt:	02/23/1988	Application #:	06907556	Filing Dt:	08/27/1986
Title:	STABLE SUSPENSIONS OF CARBOXYMETHYL CELLULOSE AND THEIR PREPARATION

Patent #:	4743383	Issue Dt:	05/10/1988	Application #:	06934388	Filing Dt:	11/24/1986
Title:	DRILLING FLUID ADDITIVES FOR USE IN HARD BRINE ENVIRONMENTS

Patent #:	4752404	Issue Dt:	06/21/1988	Application #:	07021832	Filing Dt:	03/04/1987
Title:	BLENDS OF WATER SOLUBLE POLYMERS

Patent #:	4876030	Issue Dt:	10/24/1989	Application #:	07119608	Filing Dt:	11/12/1987
Title:	ORGANOPHILIC CLAY SUSPENSION MEDIUM

Patent #:	4775010	Issue Dt:	10/04/1988	Application #:	07142484	Filing Dt:	01/06/1988
Title:	METHODS AND COMPOSITIONS FOR ACID TREATING SUBTERRANEAN FORMATIONS

Patent #:	4842770	Issue Dt:	06/27/1989	Application #:	07162835	Filing Dt:	03/02/1988
Title:	DRILLING FLUID THINNER

Patent #:	4923516	Issue Dt:	05/08/1990	Application #:	07299661	Filing Dt:	01/23/1989
Title:	WELL CEMENT SLURRIES AND DISPERSANTS THEREFOR

Patent #:	3955998	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	3978928	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	3900406	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	3908760	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	4110231	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	4014394	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	4043921	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	4048079	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	3993133	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	4000076	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	4007789	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	3921733	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	3954628	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	4209409	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	4123366	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	4172041	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	4055502	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	4068719	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Patent #:	4076628	Issue Dt:		Application #:	UNAVAILABLE	Filing Dt:
Title:

Assignor

PHILLIPS PETROLEUM COMPANY, A CORP. OF DE

Exec Dt:

10/08/1990

Assignee

DRILLING SPECIALTIES COMPANY, A CORP. OF DE

309 SHORT ST.

BARTLESVILLE, OKLAHOMA 74004

Correspondence name and address
	J.E. PHILLIPS
	RICHMOND, PHILLIPS, HITCHCOCK & UMPHLETT
	P.O. BOX 2443
	BARTLESVILLE, OK 74005

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