James J. Harrison
50Patents
17h-index
15Co-inventors
81Inventor score
Filing activity: Aug 18, 1980 → May 29, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5112507A | Polymeric dispersants having alternating polyalkylene and succinic groups | Mechanical Engineering; Lighting; Heating | 111 | Expired |
| US5334321A | Modified high molecular weight succinimides | Chemistry; Metallurgy | 110 | Expired |
| US5792729A | Dispersant terpolymers | Chemistry; Metallurgy | 103 | Expired |
| US5286799A | Two-step free radical catalyzed process for the preparation of alkenyl succinic anhydride | Chemistry; Metallurgy | 62 | Expired |
| US5319030A | One-step process for the preparation of alkenyl succinic anhydride | Chemistry; Metallurgy | 62 | Expired |
| US5716912A | Polyalkylene succinimides and post-treated derivatives thereof | Chemistry; Metallurgy | 54 | Expired |
| US5616668A | Polymeric dispersants having polyalkylene and succinic groups | Chemistry; Metallurgy | 51 | Expired |
| US5853434A | Fuel compositions having polyalkylene succinimides and preparation thereof | Chemistry; Metallurgy | 51 | Expired |
| US5851965A | Dispersant compositions having polyalkylene succinimides | Chemistry; Metallurgy | 50 | Expired |
| US5356552A | Chlorine-free lubricating oils having modified high molecular weight succinimides | Chemistry; Metallurgy | 48 | Expired |
| US6642194B2 | Clear conditioning detersive compositions and methods for making the same | Human Necessities | 48 | Expired |
| US6451920B1 | Process for making polyalkylene/maleic anhydride copolymer | Chemistry; Metallurgy | 41 | Expired |
| US5565528A | Polymeric dispersants having polyalkylene and succinic groups | Chemistry; Metallurgy | 35 | Expired |
| US5625004A | Two-step thermal process for the preparation of alkenyl succinic anhydride | Chemistry; Metallurgy | 28 | Expired |
| US6605577B1 | Clear conditioning detersive compositions containing polysiloxanes with at least one cyclic side chain | Human Necessities | 25 | Expired |
| US6156850A | Process for making polyalkenyl derivative of an unsaturated acidic reagent | Chemistry; Metallurgy | 24 | Expired |
| US6358892B1 | Polyalkylene succinimides and post-treated derivatives thereof | Chemistry; Metallurgy | 21 | Expired |
| US4293727A | Process for the oligomerization of ethylene | Chemistry; Metallurgy | 17 | Expired |
| USRE40534E1 | Clear conditioning detersive compositions containing polysiloxanes with at least one cyclic side chain | General | 15 | Expired |
| US5849676A | Post-treated derivatives of polyalkylene succinimides | Chemistry; Metallurgy | 15 | Expired |
| US4310716A | Process for the oligomerization of ethylene in methanol | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4293502A | Nickel ylides | Performing Operations; Transporting | 15 | Expired |
| US6410491B1 | Polyalkenyl sulfonates | Chemistry; Metallurgy | 14 | Expired |
| US6015776A | Polyalkylene polysuccinimides and post-treated derivatives thereof | Chemistry; Metallurgy | 14 | Expired |
| US7405186B2 | Lubricant compositions, condom products and methods of making same | Chemistry; Metallurgy | 14 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.