Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6358892 | Polyalkylene succinimides and post-treated derivatives thereof | James J. Harrison | 2002-03-19 |
| 6294506 | Lubricating oils having carbonated sulfurized metal alkyl phenates and carbonated metal alkyl aryl sulfonates | Terry V. Friesen, James J. Harrison | 2001-09-25 |
| 6156850 | Process for making polyalkenyl derivative of an unsaturated acidic reagent | James J. Harrison | 2000-12-05 |
| 6146431 | Polyalkylene polysuccinimides and post-treated derivatives thereof | James J. Harrison | 2000-11-14 |
| 6107450 | Polyalkylene succinimides and post-treated derivatives thereof | James J. Harrison, Anatoli Onopchenko | 2000-08-22 |
| 6015776 | Polyalkylene polysuccinimides and post-treated derivatives thereof | James J. Harrison | 2000-01-18 |
| 5880070 | Cross-linked succinimides from an acid derivative, a polyamine, and a polycarboxylic acid derivative | James J. Harrison | 1999-03-09 |
| 5872083 | Post-treated derivatives of polyalkylene succinimides | James J. Harrison | 1999-02-16 |
| 5853434 | Fuel compositions having polyalkylene succinimides and preparation thereof | James J. Harrison | 1998-12-29 |
| 5851965 | Dispersant compositions having polyalkylene succinimides | James J. Harrison | 1998-12-22 |
| 5849676 | Post-treated derivatives of polyalkylene succinimides | James J. Harrison | 1998-12-15 |
| 5821205 | Polyalkylene succinimides and post-treated derivatives thereof | James J. Harrison | 1998-10-13 |
| 5792729 | Dispersant terpolymers | James J. Harrison | 1998-08-11 |
| 5753597 | Polymeric dispersants | James J. Harrison | 1998-05-19 |
| 5728656 | Lower-ash lubricating oil having ultra-neutral zinc dialkyldithiophosphates | Elaine S. Yamaguchi | 1998-03-17 |
| 5716912 | Polyalkylene succinimides and post-treated derivatives thereof | James J. Harrison | 1998-02-10 |
| 5625004 | Two-step thermal process for the preparation of alkenyl succinic anhydride | James J. Harrison | 1997-04-29 |
| 5616668 | Polymeric dispersants having polyalkylene and succinic groups | James J. Harrison | 1997-04-01 |
| 5565528 | Polymeric dispersants having polyalkylene and succinic groups | James J. Harrison | 1996-10-15 |
| 5356552 | Chlorine-free lubricating oils having modified high molecular weight succinimides | James J. Harrison, Jack E. Morris, Jacques Cazin | 1994-10-18 |
| 5334321 | Modified high molecular weight succinimides | James J. Harrison | 1994-08-02 |
| 5319030 | One-step process for the preparation of alkenyl succinic anhydride | James J. Harrison | 1994-06-07 |
| 5286799 | Two-step free radical catalyzed process for the preparation of alkenyl succinic anhydride | James J. Harrison | 1994-02-15 |
| 5175225 | Process for preparing polymeric dispersants having alternating polyalkylene and succinic groups | — | 1992-12-29 |