Leonard A. Matthews
9Patents
5h-index
16Co-inventors
56Inventor score
Filing activity: Jul 11, 1988 → Sep 6, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5792732A | Lubricants with linear alkaryl overbased detergents | Chemistry; Metallurgy | 14 | Expired |
| US4879053A | Process for preparing overbased calcium sulfonates | Chemistry; Metallurgy | 13 | Expired |
| US5147414A | Process for producing ORI control additives | Chemistry; Metallurgy | 11 | Expired |
| US5235067A | Continuous process for alkenyl succinimides | Chemistry; Metallurgy | 8 | Expired |
| US4997584A | Process for preparing improved overbased calcium sulfonate | Chemistry; Metallurgy | 6 | Expired |
| US4929373A | Process for preparing overbased calcium sulfonates | Chemistry; Metallurgy | 4 | Expired |
| US5108630A | Process for overbasing sulfonates comprising two separate additions of calcium oxide | Chemistry; Metallurgy | 4 | Expired |
| US6444625B1 | High viscosity overbased sulfonate detergent and marine cylinder oils containing same | Chemistry; Metallurgy | 3 | Expired |
| US6239084A | Viscosity drift control in overbased detergents | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.