Pierre Le Perchec
14Patents
6h-index
28Co-inventors
62Inventor score
Filing activity: Apr 8, 1983 → Dec 10, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5460714A | Liquid phase catalytic hydrocarbon hydroconversion with polyaromatic additive | Chemistry; Metallurgy | 42 | Expired |
| US5879445A | Thinners for aqueous suspensions of mineral particles and hydraulic binder pastes | Chemistry; Metallurgy | 15 | Expired |
| US5350701A | Process for producing a surface gate of an integrated electro-chemical sensor, consisting of a field-effect transistor sensitive to alkaline-earth species and sensor obtained | Physics | 13 | Expired |
| US6646103B1 | Method for obtaining oxacarbonyl polymers, functionalization, resulting polymers and functionalizing agent | Chemistry; Metallurgy | 7 | Expired |
| US4704229A | Surface-active compounds of the sulfobetaines family, their manufacture and use, particularly for enhanced oil recovery | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5817716A | Resins with a primary amine or guanidine function | Chemistry; Metallurgy | 6 | Expired |
| US6410671B1 | Zwitterion derivative and application to aqueous suspension properties | Chemistry; Metallurgy | 5 | Expired |
| US4869804A | Process for the thermal conversion of heavy petroleum fractions and refining residues, in the presence of oxygen compounds of sulfur and nitrogen and compositions containing these compounds | Chemistry; Metallurgy | 4 | Expired |
| US4596680A | Process for manufacturing aryl ethers having different substituents on the two aromatic rings | Chemistry; Metallurgy | 4 | Expired |
| US5632884A | Asphalt compositions, method of preparation, and use | Chemistry; Metallurgy | 4 | Expired |
| US5348923A | Silica-based substrates modified by grafting of polyalkylguanidinium groups, their process of manufacture and their use as catalysts | Performing Operations; Transporting | 3 | Expired |
| US5726253A | Process for the preparation of resins with a primary amine or guanidine function, and resins thus obtained | Chemistry; Metallurgy | 3 | Expired |
| US5629452A | Process for the preparation of polyoxyalkylated amines | Chemistry; Metallurgy | 2 | Expired |
| US5973080A | Process for the preparation of resins with a primary amine or guanidine function, and resins thus obtained | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.