WI

William J. Powers, III

Chevron: 8 patents #593 of 4,788Top 15%
EA Ethyl Additives: 1 patents #2 of 18Top 15%
Overall (All Time): #591,151 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5578235 Overbased calcium sulfonate Tze-Chi Jao, Jayne M. Vaccaro 1996-11-26
5147414 Process for producing ORI control additives Leonard A. Matthews, Marian F. Leong, Robert Erickson 1992-09-15
5108630 Process for overbasing sulfonates comprising two separate additions of calcium oxide Elzie D. Black, Leonard A. Matthews, Robert Erickson 1992-04-28
4965004 Process for a borated detergent additive Raymond C. Schlicht 1990-10-23
4929373 Process for preparing overbased calcium sulfonates Leonard A. Matthews, Tze-Chi Jao 1990-05-29
4879053 Process for preparing overbased calcium sulfonates Leonard A. Matthews, Henry M. Przybyla, Joanne R. Whittle, Jerry C. Perciful 1989-11-07
4810396 Process for preparing overbased calcium sulfonates Tze-Chi Jao 1989-03-07
4548754 Esterification of wax oxidates Frederic F. Day, Eric D. Ewen, Gerald L. Piper 1985-10-22
4472306 Sulfurizing tri-isobutylene in the presence of a promotor Giles A. Rawls, Steven P. Knutson 1984-09-18