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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:	008639/0218			Pages:	17
		Recorded:	07/10/1997
Conveyance:	SECURITY AGREEMENT

Total properties: 13

1

Patent #:	4518039	Issue Dt:	05/21/1985	Application #:	06437431	Filing Dt:	10/27/1982
Title:	METHOD FOR TREATING SUBTERRANEAN FORMATIONS

2

Patent #:	4527627	Issue Dt:	07/09/1985	Application #:	06518158	Filing Dt:	07/28/1983
Title:	METHOD OF ACIDIZING PROPPED FRACTURES

3

Patent #:	4553596	Issue Dt:	11/19/1985	Application #:	06518197	Filing Dt:	07/28/1983
Title:	WELL COMPLETION TECHNIQUE

4

Patent #:	4585064	Issue Dt:	04/29/1986	Application #:	06626754	Filing Dt:	07/02/1984
Title:	HIGH STRENGTH PARTICULATES

5

Patent #:	4597991	Issue Dt:	07/01/1986	Application #:	06705712	Filing Dt:	02/26/1985
Title:	METHOD FOR PRODUCING HEAT CURABLE PARTICLES

6

Patent #:	4888240	Issue Dt:	12/19/1989	Application #:	06769065	Filing Dt:	08/26/1985
Title:	HIGH STRENGTH PARTICULATES

7

Patent #:	4717594	Issue Dt:	01/05/1988	Application #:	06769304	Filing Dt:	08/26/1985
Title:	HIGH STRENGTH PARTICULATES

8

Patent #:	4732920	Issue Dt:	03/22/1988	Application #:	06854943	Filing Dt:	04/23/1986
Title:	HIGH STRENTH PARTICULATES

9

Patent #:	5425994	Issue Dt:	06/20/1995	Application #:	07924488	Filing Dt:	08/04/1992
Title:	RESIN COATED PARTICULATES COMPRISING A FORMALDEHYDE SOURCE-METAL COMPOUND (FS-MC) COMPLEX

10

Patent #:	5422183	Issue Dt:	06/06/1995	Application #:	08069929	Filing Dt:	06/01/1993
Title:	COMPOSITE AND REINFORCED COATINGS ON PROPPANTS AND PARTICLES

11

Patent #:	5316792	Issue Dt:	05/31/1994	Application #:	08071483	Filing Dt:	06/04/1993
Title:	METHOD AND PROCESS FOR THE STABILIZATION OF RESIN COATED PARTICULATES

12

Patent #:	5311946	Issue Dt:	05/17/1994	Application #:	08071782	Filing Dt:	06/04/1993
Title:	METHOD AND PROCESS FOR THE STABILIZATION OF RESIN COATED PARTICULATES

13

Patent #:	5597784	Issue Dt:	01/28/1997	Application #:	08465823	Filing Dt:	06/06/1995
Title:	COMPOSITE AND REINFORCED COATINGS ON PROPPANTS AND PARTICLES

Assignors

1

FAIRMOUNT MINERALS, LTD.

Exec Dt:

02/29/1996

2

BEST SAND CORPORATION

Exec Dt:

02/29/1996

3

BEST SILICA COMPANY

Exec Dt:

02/29/1996

4

PRAIRIE TRANSPORTATION, INC.

Exec Dt:

02/29/1996

5

FAIRMOUNT ABRASIVES, INC.

Exec Dt:

02/29/1996

6

TECHNISAND, INC.

Exec Dt:

02/29/1996

7

UNITED WESTERN SUPPLY COMPANY

Exec Dt:

02/29/1996

8

WEDRON SILICA COMPANY

Exec Dt:

02/29/1996

Assignee

1

NATIONAL CITY BANK

NATIONAL CITY CENTER

1900 EAST NINTH STREET

CLEVELAND, OHIO 44101

Correspondence name and address
	BUCHANAN INGERSOLL, P.C.
	MICHAEL L. DEVER
	301 GRANT STREET
	20TH FLOOR
	PITTSBURGH, PA 15219

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