Issued Patents 1989
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870197 | Method for preparing salts of polyolefinic substituted dicarboxylic acids | Antonio Gutierrez, Laura J. Colcord-Hernandez | 1989-09-26 |
| 4866135 | Heterocyclic amine terminated, lactone modified, aminated viscosity modifiers of improved dispersancy | Antonio Gutierrez | 1989-09-12 |
| 4866139 | Lactone modified, esterified dispersant additives useful in oleaginous compositions | Antonio Gutierrez | 1989-09-12 |
| 4866140 | Lactone modified adducts or reactants and oleaginous compositions containing same | Antonio Gutierrez | 1989-09-12 |
| 4866141 | Lactone modified, esterfied or aminated additives useful in oleaginous compositions and compositions containing same | Antonio Gutierrez | 1989-09-12 |
| 4866142 | Lactone modified polymeric amines useful as oil soluble dispersant additives | Antonio Gutierrez | 1989-09-12 |
| 4863624 | Dispersant additives mixtures for oleaginous compositions | Jacob Emert, Malcolm Waddoups | 1989-09-05 |
| 4857217 | Dispersant additives derived from amido-amines | Antonio Gutierrez | 1989-08-15 |
| 4849572 | Process for preparing polybutenes having enhanced reactivity using boron trifluoride catalysts (PT-647) | Frank J. Chen, Jacob Emert, Gregory C. Giffin | 1989-07-18 |
| 4839071 | Polyolefinic succinimide polyamine alkyl acetoacetate adducts as dispersants in lubricating oil compositions | Antonio Gutierrez, Robert A. Kleist, Ricardo Bloch | 1989-06-13 |
| 4828742 | Lactone-modified, mannich base dispersant additives useful in oleaginous compositions | Antonio Gutierrez | 1989-05-09 |
| 4820432 | Lactone-modified, Mannich base dispersant additives useful in oleaginous compositions | Antonio Gutierrez | 1989-04-11 |