TE

Timothy R. Erdman

Chevron: 17 patents #241 of 4,788Top 6%
Overall (All Time): #280,974 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4927551 Lubricating oil compositions containing a combination of a modified succinimide and a Group II metal overbased sulfurized alkylphenol Michael A. Shippey, Robert H. Wollenberg 1990-05-22
4840744 Modified succinimides and lubricating oil compositions containing the same Robert H. Wollenberg, Frank Plavac 1989-06-20
4747971 Hydrocarbon soluble nitrogen containing dispersant - fluorophosphoric acid adducts 1988-05-31
4746446 Modified succinimides Robert H. Wollenberg, Frank Plavac 1988-05-24
4713190 Modified carboxylic amide dispersants 1987-12-15
4648980 Hydrocarbon soluble nitrogen containing dispersant - fluorophosphoric acid adducts 1987-03-10
4615826 Hydrocarbon soluble nitrogen containing dispersant-fluorophosphoric acid adducts 1986-10-07
4612132 Modified succinimides Robert H. Wollenberg, Frank Plavac 1986-09-16
4584112 Fuel-efficient lubricating oil 1986-04-22
4548722 Dispersant lubricating oil additives 1985-10-22
4521319 Dispersant lubricating oil additives 1985-06-04
4410437 Amine substituted hydrocarbon polymer dispersant lubricating oil additives 1983-10-18
4406803 Method for improving fuel economy of internal combustion engines Thomas V. Liston 1983-09-27
4376056 Fuel economy in internal combustion engines 1983-03-08
4336149 Fuel economy in internal combustion engines 1982-06-22
4331222 Method for reducing brake noise in oil-immersed disc brakes Thomas V. Liston 1982-05-25
4275006 Process of preparing dispersant lubricating oil additives 1981-06-23