Guy Parc
21Patents
8h-index
17Co-inventors
68Inventor score
Filing activity: Mar 27, 1975 → Jan 25, 1994
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4983558A | Process for presulfurizing a hydrocarbon treatment catalyst | Performing Operations; Transporting | 55 | Expired |
| US4645610A | Method for the preparation of olefin polysulfides, the products obtained and their utilization as lubricant additives | Chemistry; Metallurgy | 33 | Expired |
| US4036771A | Lubricating bases for multigrade oils | Chemistry; Metallurgy | 23 | Expired |
| US4795576A | Polysulfided olefin compositions, their preparation and use as additives for lubricants | Chemistry; Metallurgy | 20 | Expired |
| US4747964A | Dispersing additive compositions for lubricating oils and their manufacture | Chemistry; Metallurgy | 17 | Expired |
| US5306436A | New phosphosulfides compounds and use thereof as oil lubricants | Chemistry; Metallurgy | 10 | Expired |
| US4766228A | Metal dihydrocarbyl-dithiophosphyl-dithiophosphates their manufacture and use as additives for lubricants | Chemistry; Metallurgy | 9 | Expired |
| US4756843A | Copolymer compositions usable as additives for lubricating oils | Chemistry; Metallurgy | 8 | Expired |
| US4059536A | Improved process for preparing superbasic detergent additives | Chemistry; Metallurgy | 8 | Expired |
| US5080812A | Thiophosphoretted compounds, their preparation and their use as additives for lubricants | Chemistry; Metallurgy | 7 | Expired |
| US4839069A | Olefin polysulfide compositions their manufacture and use as additives for lubricants | Chemistry; Metallurgy | 5 | Expired |
| US5346636A | Colloidal products containing boron and phosphorus, their preparation and their uses as lubricating additives | Chemistry; Metallurgy | 5 | Expired |
| US4882446A | Metal dihydrocarbyl-dithiophosphyl-dithiophosphates their manufacture and use as additives for lubricants | Chemistry; Metallurgy | 4 | Expired |
| US5133889A | Polysulfurized olefin compositions, their preparation and use as additives in lubricants | Chemistry; Metallurgy | 4 | Expired |
| US5284592A | (Poly) sulfurized carboxylic compounds, their preparation and their use as petroleum additives for lubricating oils | Chemistry; Metallurgy | 4 | Expired |
| US5324440A | Surbased colloidal product containing organic sulfur and their use as detergent additives having an antiwear and extreme-pressure effect in lubricating oils | Chemistry; Metallurgy | 3 | Expired |
| US5286395A | Olefin polysulfide compositions of high sulfur content and very low chlorine content, their manufacture and use as additives for lubricants | Chemistry; Metallurgy | 3 | Expired |
| US4737298A | Process for manufacturing soluble organic calcium complexes, the resultant complexes and their use, particularly as additives for improving the combustion of gas oils and fuel oils | Chemistry; Metallurgy | 2 | Expired |
| US5463132A | Process for the preparation of phosphosulfide compounds useful as oil lubricants | Chemistry; Metallurgy | 2 | Expired |
| US5045221A | Polysulphurized olefin compositions, their preparation and their use as additives for lubricants | Chemistry; Metallurgy | 1 | Expired |
| US5256319A | New thiophosphoretted compounds, their preparation and their use as additives for lubricants | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.