Masahiko Oka
37Patents
13h-index
53Co-inventors
84Inventor score
Filing activity: Nov 10, 1976 → Apr 4, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6386271B1 | Method for continuous casting of steel | Performing Operations; Transporting | 68 | Expired |
| US4141874A | Fluorine-containing elastomeric copolymers, process for preparing the same and composition containing the same | Chemistry; Metallurgy | 45 | Expired |
| US4766190A | Novel elastomeric fluoropolymer and preparation thereof | Chemistry; Metallurgy | 43 | Expired |
| US4501869A | Cross linkable fluorine-containing polymer | Chemistry; Metallurgy | 35 | Expired |
| US4476601A | Washing apparatus | Performing Operations; Transporting | 32 | Expired |
| US4476399A | Stabilized power source parallel operation system | Physics | 30 | Expired |
| US4696989A | Fluorine-containing elastomeric copolymer | Chemistry; Metallurgy | 28 | Expired |
| US5001278A | Novel fluorovinyl ether and copolymer comprising the same | Chemistry; Metallurgy | 25 | Expired |
| US5349093A | Fluorovinyl ether | Chemistry; Metallurgy | 24 | Expired |
| US5913357A | Method for controlling the level of molten metal for a continuous casting machine | Performing Operations; Transporting | 15 | Expired |
| US4601627A | Apparatus for transferring thin sheet-like article such as wafers | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4670328A | Novel impregnated material of a copolymer of tetrafluoroethylene and perfluoroalkyl vinyl ether | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5401818A | Fluorovinyl ether | Chemistry; Metallurgy | 14 | Expired |
| US6102101A | Continuous casting method and apparatus thereof | Performing Operations; Transporting | 11 | Expired |
| US4530972A | Fluoride-containing polymer and composition containing same | Chemistry; Metallurgy | 10 | Expired |
| US4146532A | Fluoroelastomer composition with diazobicycloundecenium | Chemistry; Metallurgy | 10 | Expired |
| US4467074A | Fluoroelastomer composition | Chemistry; Metallurgy | 9 | Expired |
| US4812011A | Optical fiber comprising a methacrylate polymer core and a fluoro polymer cladding | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7262257B2 | Telechelic polymers containing reactive functional groups | Chemistry; Metallurgy | 8 | Expired |
| US4975502A | Process for emulsion polymerization | Chemistry; Metallurgy | 8 | Expired |
| US6911509B1 | Functional fluoropolymers and process therefor | Chemistry; Metallurgy | 7 | Expired |
| US4654444A | Fluorine-containing diacylperoxides and use thereof | Chemistry; Metallurgy | 7 | Expired |
| US4588185A | Transfer device of sheet object | Performing Operations; Transporting | 6 | Expired |
| US4931511A | Cross-linkable coating composition | Chemistry; Metallurgy | 6 | Expired |
| US5112973A | Fluorine-containing acrylic acid derivative and polymer thereof | Chemistry; Metallurgy | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.