Issued Patents 1989
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880923 | Macrocyclic polyamine and polycyclic polyamine multifunctional lubricating oil additives | Stanley J. Brois | 1989-11-14 |
| 4870197 | Method for preparing salts of polyolefinic substituted dicarboxylic acids | Robert D. Lundberg, Laura J. Colcord-Hernandez | 1989-09-26 |
| 4866135 | Heterocyclic amine terminated, lactone modified, aminated viscosity modifiers of improved dispersancy | Robert D. Lundberg | 1989-09-12 |
| 4866139 | Lactone modified, esterified dispersant additives useful in oleaginous compositions | Robert D. Lundberg | 1989-09-12 |
| 4866140 | Lactone modified adducts or reactants and oleaginous compositions containing same | Robert D. Lundberg | 1989-09-12 |
| 4866141 | Lactone modified, esterfied or aminated additives useful in oleaginous compositions and compositions containing same | Robert D. Lundberg | 1989-09-12 |
| 4866142 | Lactone modified polymeric amines useful as oil soluble dispersant additives | Robert D. Lundberg | 1989-09-12 |
| 4866187 | Thio-bis(alkyl lactone acid esters) and thio-bis-(hydrocarbyl diacid esters) are useful additives for lubricating compositions | Stanley J. Brois | 1989-09-12 |
| 4857217 | Dispersant additives derived from amido-amines | Robert D. Lundberg | 1989-08-15 |
| 4851524 | Amine-treated thio-bis-(alkyl lactone acid) and thio-bis-(hydrocarbyl diacid) materials, additives for lubricating compositions | Stanley J. Brois | 1989-07-25 |
| 4839071 | Polyolefinic succinimide polyamine alkyl acetoacetate adducts as dispersants in lubricating oil compositions | Robert D. Lundberg, Robert A. Kleist, Ricardo Bloch | 1989-06-13 |
| 4839073 | Polyolefinic succinimide polyamine alkyl acetoacetate and substituted acetate adducts as compatibilizer additives in lubricating oil compositions | Jacob Emert, Robert A. Kleist, Malcolm Waddoups | 1989-06-13 |
| 4839072 | Polyolefinic succinimide polyamine alkyl acetoacetate adducts | Robert A. Kleist | 1989-06-13 |
| 4839070 | Polyolefinic succinimide polyamine alkyl acetoacetate adduct dispersants | Robert A. Kleist | 1989-06-13 |
| 4828742 | Lactone-modified, mannich base dispersant additives useful in oleaginous compositions | Robert D. Lundberg | 1989-05-09 |
| 4820432 | Lactone-modified, Mannich base dispersant additives useful in oleaginous compositions | Robert D. Lundberg | 1989-04-11 |