Leonard A. Matthews

Person

Port Arthur, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Lubricants with linear alkaryl overbased detergents
- Patent number 5,792,732
- Issue date Aug 11, 1998
- Ethyl Additives Corp.
- Tze Chi Jao
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Continuous process for alkenyl succinimides
- Patent number 5,235,067
- Issue date Aug 10, 1993
- Texaco Inc.
- Billy R. Allen
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for producing ORI control additives
- Patent number 5,147,414
- Issue date Sep 15, 1992
- Texaco Inc.
- William J. Powers
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Process for overbasing sulfonates comprising two separate additions...
- Patent number 5,108,630
- Issue date Apr 28, 1992
- Texaco Inc.
- Elzie D. Black
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Process for preparing improved overbased calcium sulfonate
- Patent number 4,997,584
- Issue date Mar 5, 1991
- Texaco Inc.
- Tze C. Jao
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Process for preparing overbased calcium sulfonates
- Patent number 4,929,373
- Issue date May 29, 1990
- Texaco Inc.
- William J. Powers
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Process for preparing overbased calcium sulfonates
- Patent number 4,879,053
- Issue date Nov 7, 1989
- Texaco Inc.
- Leonard A. Matthews
- C07 - ORGANIC CHEMISTRY

Leonard A. Matthews

Person

Patents Grantslast 30 patents

Lubricants with linear alkaryl overbased detergents

Continuous process for alkenyl succinimides

Process for producing ORI control additives

Process for overbasing sulfonates comprising two separate additions...

Process for preparing improved overbased calcium sulfonate

Process for preparing overbased calcium sulfonates

Process for preparing overbased calcium sulfonates