Hermann Perrey
32Patents
10h-index
74Co-inventors
78Inventor score
Filing activity: Nov 14, 1974 → Dec 15, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4824639A | Test device and a method for the detection of a component of a liquid sample | Emerging Cross-Sectional Technologies | 173 | Expired |
| US4389472A | Process for the production of documents which cannot be falsified | Emerging Cross-Sectional Technologies | 48 | Expired |
| US4824640A | Transparent test strip system | Physics | 37 | Expired |
| US4774178A | Immobilization of biological material within a polymer matrix | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4762884A | Process for the production of radiation-crosslinked thermoplastic polyurethanes | Chemistry; Metallurgy | 28 | Expired |
| US4380604A | Radiation-hardenable acrylic acid esters containing urethane groups and their use | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4436570A | Process for bonding films | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4888379A | Heat-sensitive polyurethane dispersions | Chemistry; Metallurgy | 12 | Expired |
| US5314982A | Process for the preparation of polyurea greases | Chemistry; Metallurgy | 11 | Expired |
| US4804475A | Metallized membrane systems | Chemistry; Metallurgy | 10 | Expired |
| US4115379A | Dyestuff salts | Chemistry; Metallurgy | 8 | Expired |
| US4579934A | Thermotropic, aromatic polyester carbonates, process for the production thereof and mouldings, filaments, fibers and films thereof | Chemistry; Metallurgy | 7 | Expired |
| US4870151A | Polyurea-modified polyetherurethanes and their use as emulsion breakers for water-in-oil emulsions | Chemistry; Metallurgy | 7 | Expired |
| US4923920A | Mixtures of elastomer latices and dispersions of aromatic polycarbonates, polyesters or polyester carbonates and products produced therefrom | Chemistry; Metallurgy | 6 | Expired |
| US4101468A | Process for cold-hardening polyurethane foams using sulfonamide emulsifiers | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4745175A | Condensation products of thioalkylene oxides of polythio-alkylene oxides with polyalkylene oxides, their preparation and their use as breakers for water-in-oil emulsions | Chemistry; Metallurgy | 4 | Expired |
| US4250071A | Mixture of ammonia and alkoxylated poly-siloxanes and its use as a heat sensitizer | Chemistry; Metallurgy | 4 | Expired |
| US4430483A | Process for the production of water-resistant, film-forming chlorinated polymers | Chemistry; Metallurgy | 3 | Expired |
| US4535111A | Heat sensitizing agents, the production and use thereof | Chemistry; Metallurgy | 3 | Expired |
| US4687709A | Magnetic recording carrier containing radiation hardenable dispersing agents | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4502863A | Solid dyestuff formulations containing ethylenically unsaturated acid, ester and acrylonitrile copolymer | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4131603A | Heat sensitizing mixture comprising an amide and a heat sensitizing agent which is a poly(alkylene oxide) containing urethane groups | Chemistry; Metallurgy | 2 | Expired |
| US7268183B2 | Reactive polyurethane hotmelts with large PSA range | Emerging Cross-Sectional Technologies | 2 | Expired |
| US3979454A | Process for the production of alkyl sulphonic acid hydroxy alkyl amides | Chemistry; Metallurgy | 2 | Expired |
| US4001162A | Stable heat-sensitive latex mixtures | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.