John T. Loper
56Patents
9h-index
41Co-inventors
78Inventor score
Filing activity: Jun 11, 1993 → Feb 8, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7214649B2 | Hydrocarbyl dispersants including pendant polar functional groups | Chemistry; Metallurgy | 48 | Expired |
| US7645726B2 | Dispersant reaction product with antioxidant capability | Chemistry; Metallurgy | 46 | Expired |
| US6548458B2 | Succinimide-acid compounds and derivatives thereof | Chemistry; Metallurgy | 46 | Expired |
| US8048831B2 | Dispersant reaction product with antioxidant capability | Chemistry; Metallurgy | 45 | Active |
| US7897696B2 | Process for the preparation of polyalkenyl succinic anhydrides | Chemistry; Metallurgy | 42 | Active |
| US6528463B1 | Oil soluble molybdenum compositions | Chemistry; Metallurgy | 23 | Expired |
| US7863228B2 | Additives for lubricants and fuels | Chemistry; Metallurgy | 16 | Active |
| US7361629B2 | Additives for lubricants and fuels | Chemistry; Metallurgy | 12 | Expired |
| US6767871B2 | Diesel engine lubricants | Chemistry; Metallurgy | 9 | Expired |
| US7491248B2 | Fuels compositions and methods for using same | Chemistry; Metallurgy | 9 | Expired |
| US5597390A | Amine ester-containing additives and methods of making and using same | Chemistry; Metallurgy | 9 | Expired |
| US7766982B2 | Fuels compositions and methods for using same | Chemistry; Metallurgy | 8 | Active |
| US7182795B2 | Fuel lubricity additives derived from hydrocarbyl succinic anhydrides and hydroxy amines, and middle distillate fuels containing same | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5387266A | Mannich base derivatives, and the production and uses thereof | Chemistry; Metallurgy | 7 | Expired |
| US7645728B2 | Lubricant and fuel additives derived from treated amines | Chemistry; Metallurgy | 5 | Active |
| US9663743B2 | Lubricating method and composition for reducing engine deposits | Chemistry; Metallurgy | 5 | Active |
| US5558683A | Mannich base derivatives, and the production and uses thereof | Chemistry; Metallurgy | 4 | Expired |
| US5512067A | Asymmetrical mannich base derivatives and the production and uses thereof | Chemistry; Metallurgy | 4 | Expired |
| US8728995B2 | Process for the preparation of polyalkenyl succinic anhydrides | Chemistry; Metallurgy | 4 | Active |
| US9279094B2 | Friction modifiers for use in lubricating oil compositions | Chemistry; Metallurgy | 3 | Active |
| US6800596B1 | Lubricating oil dispersant | Chemistry; Metallurgy | 3 | Expired |
| US7879775B2 | Lubricant compositions | Chemistry; Metallurgy | 3 | Active |
| US7897552B2 | Additives and lubricant formulations for improved antioxidant properties | Chemistry; Metallurgy | 3 | Active |
| US8349778B2 | Lubricating compositions having improved friction properties | Chemistry; Metallurgy | 2 | Active |
| US10221267B2 | Microstructure-controlled copolymers of ethylene and C3-C10 alpha-olefins | Chemistry; Metallurgy | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.