Charles P. Bryant
26Patents
13h-index
12Co-inventors
78Inventor score
Filing activity: Jan 13, 1975 → Oct 23, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4454059A | Nitrogenous dispersants, lubricants and concentrates containing said nitrogenous dispersants | Chemistry; Metallurgy | 101 | Expired |
| US3980569A | Dispersants and process for their preparation | Chemistry; Metallurgy | 88 | Expired |
| US4284414A | Mixed alkyl esters of interpolymers for use in crude oils | Chemistry; Metallurgy | 20 | Expired |
| US4053428A | Hydrocarbon-substituted methylol phenols | Chemistry; Metallurgy | 20 | Expired |
| US4273891A | Hydrocarbon-substituted methylol phenols | Chemistry; Metallurgy | 20 | Expired |
| US5336423A | Polymeric salts as dispersed particles in electrorheological fluids | Chemistry; Metallurgy | 19 | Expired |
| US6124249A | Viscosity improvers for lubricating oil compositions | Chemistry; Metallurgy | 18 | Expired |
| US4846985A | Antioxidant compositions | Chemistry; Metallurgy | 17 | Expired |
| US4604221A | Nitrogen-containing esters and lubricants containing them | Chemistry; Metallurgy | 16 | Expired |
| US4205960A | Hydroxyalkyl hydroxy-aromatic condensation products as fuel and lubricant additives | Chemistry; Metallurgy | 14 | Expired |
| US6271184A | Viscosity improvers for lubricating oil-compositions | Chemistry; Metallurgy | 13 | Expired |
| US6881780B2 | Dispersant-viscosity improvers for lubricating oil compositions | Chemistry; Metallurgy | 13 | Expired |
| US5595680A | Electrorheological fluids containing polyanilines | Chemistry; Metallurgy | 13 | Expired |
| US4285824A | Hydroxyalkyl hydroxy-aromatic condensation products as fuel and lubricant additives | Chemistry; Metallurgy | 12 | Expired |
| US4108784A | Hydroxyalkyl hydroxy-aromatic condensation products as fuel and lubricant additives | Chemistry; Metallurgy | 10 | Expired |
| US5969068A | Dispersant-viscosity improvers for lubricating oil compositions | Chemistry; Metallurgy | 8 | Expired |
| US5435932A | Electrorheological fluids containing eletronically conductive polymers | Chemistry; Metallurgy | 6 | Expired |
| US6639034B2 | Dispersant-viscosity improvers for lubricating oil compositions | Chemistry; Metallurgy | 6 | Expired |
| US5470498A | Polymeric salts as dispersed particles in electrorheological fluids | Chemistry; Metallurgy | 5 | Expired |
| US5437806A | Electrorheological fluids containing polyanilines | Chemistry; Metallurgy | 4 | Expired |
| US6294628A | Dispersant-viscosity improvers for lubricating oil compositions | Chemistry; Metallurgy | 4 | Expired |
| US6331603A | Nitrogen containing acrylic copolymers | Chemistry; Metallurgy | 3 | Expired |
| US5821313A | Dispersant-viscosity improvers for lubricating oil compositions | Chemistry; Metallurgy | 3 | Expired |
| US4343740A | Hydroxylalkyl hydroxy-aromatic condensation products as fuel and lubricant additives | Chemistry; Metallurgy | 2 | Expired |
| US4163730A | Hydroxyalkyl hydroxy-aromatic condensation products as lubricant additives | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.