Leonard J. Persinski

Person

Pittsburgh, PA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Rapid gel formation in hydrocarbon recovery
- Patent number 6,054,417
- Issue date Apr 25, 2000
- Clearwater, Inc.
- Rhonda L. Graham
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Rapid gel formation in hydrocarbon recovery
- Patent number 6,004,908
- Issue date Dec 21, 1999
- Clearwater, Inc.
- Rhonda L. Graham
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Ferric alkyl amine citrates and methods of making them
- Patent number 5,693,837
- Issue date Dec 2, 1997
- Clearwater, Inc.
- Kevin W. Smith
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of hydrocarbon gels from ferric sources, polycarboxylic...
- Patent number 5,647,900
- Issue date Jul 15, 1997
- Clearwater, Inc.
- Kevin W. Smith
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Hydrocarbon gels useful in formation fracturing
- Patent number 5,614,010
- Issue date Mar 25, 1997
- Clearwater, Inc.
- Kevin W. Smith
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Hydrocarbon gels useful in formation fracturing
- Patent number 5,571,315
- Issue date Nov 5, 1996
- Clearwater, Inc.
- Kevin W. Smith
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Hydrocarbon gels useful in formation fracturing
- Patent number 5,417,287
- Issue date May 23, 1995
- Clearwater, Inc.
- Kevin W. Smith
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Multifunctional scale inhibitors
- Patent number 5,087,376
- Issue date Feb 11, 1992
- Calgon Corporation
- Beverly Bendiksen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Synergistic scale and corrosion inhibiting admixtures containing ca...
- Patent number 4,936,987
- Issue date Jun 26, 1990
- Calgon Corporation
- Leonard J. Persinski
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Synergistic scale and corrosion inhibiting admixtures containing ca...
- Patent number 4,640,793
- Issue date Feb 3, 1987
- Calgon Corporation
- Leonard J. Persinski
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Methods of using cementing compositions having improved flow proper...
- Patent number 4,040,854
- Issue date Aug 9, 1977
- Calgon Corporation
- Leonard J. Persinski
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Methods of using cementing compositions having improved flow proper...
- Patent number 4,036,660
- Issue date Jul 19, 1977
- Calgon Corporation
- Leonard J. Persinski
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Low fluid loss cementing compositions containing hydrolyzed acrylam...
- Patent number 4,015,991
- Issue date Apr 5, 1977
- Calgon Corporation
- Leonard J. Persinski
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Well cementing composition having improved flow properties, contain...
- Patent number 3,964,921
- Issue date Jun 22, 1976
- Calgon Corporation
- Leonard J. Persinski
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Well cementing method using a composition having improved flow prop...
- Patent number 3,952,805
- Issue date Apr 27, 1976
- Calgon Corporation
- Leonard J. Persinski
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES

Patents Applicationslast 30 patents

Information Patent Application
EFFERVESCENT BIOCIDE COMPOSITIONS FOR OILFIELD APPLICATIONS
- Publication number 20080004189
- Publication date Jan 3, 2008
- WEATHERFORD/LAMB, INC.
- KEVIN SMITH
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING

Leonard J. Persinski

Person

Patents Grantslast 30 patents

Rapid gel formation in hydrocarbon recovery

Rapid gel formation in hydrocarbon recovery

Ferric alkyl amine citrates and methods of making them

Preparation of hydrocarbon gels from ferric sources, polycarboxylic...

Hydrocarbon gels useful in formation fracturing

Hydrocarbon gels useful in formation fracturing

Hydrocarbon gels useful in formation fracturing

Multifunctional scale inhibitors

Synergistic scale and corrosion inhibiting admixtures containing ca...

Synergistic scale and corrosion inhibiting admixtures containing ca...

Methods of using cementing compositions having improved flow proper...

Methods of using cementing compositions having improved flow proper...

Low fluid loss cementing compositions containing hydrolyzed acrylam...

Well cementing composition having improved flow properties, contain...

Well cementing method using a composition having improved flow prop...

Patents Applicationslast 30 patents

EFFERVESCENT BIOCIDE COMPOSITIONS FOR OILFIELD APPLICATIONS