Yoichi Kawai
38Patents
12h-index
47Co-inventors
81Inventor score
Filing activity: Aug 6, 1980 → Oct 21, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4748206A | Polyolefin composition and the same used for vehicle exterior members | Chemistry; Metallurgy | 69 | Expired |
| US4734450A | Polypropylene-base resin composition containing an inorganic filler and 0.01 to 0.6 wt. % of carbon black | Chemistry; Metallurgy | 46 | Expired |
| US4480065A | Polypropylene-base resin composition | Chemistry; Metallurgy | 44 | Expired |
| US4314039A | Polypropylene composition containing a 1.3,2.4-di(alkylbenzylidene) sorbitol | Chemistry; Metallurgy | 41 | Expired |
| US4510079A | Electrically-conductive resin composition | Chemistry; Metallurgy | 36 | Expired |
| US5023286A | Polypropylene resin compositions | Chemistry; Metallurgy | 30 | Expired |
| US4425262A | Electroconductive resin composition | Chemistry; Metallurgy | 28 | Expired |
| US4705818A | Polypropylene-base resin composition | Chemistry; Metallurgy | 23 | Expired |
| US4891392A | Production process of polyolefin resin composition containing inorganic filler | Chemistry; Metallurgy | 18 | Expired |
| USD637706S1 | Axial-flow blower | General | 16 | Expired |
| US4663369A | Glass-fiber reinforced polypropylene resin composition | Chemistry; Metallurgy | 16 | Expired |
| US6960858B2 | Motor using permanent magnet | Electricity | 16 | Expired |
| US5478646A | Polypropylene fiber and a preparation process thereof | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7154198B2 | Linear motor | Electricity | 12 | Expired |
| US4942096A | Polypropylene resin composition | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5082888A | Polypropylene resin composition having high dielectric strength | Chemistry; Metallurgy | 8 | Expired |
| US4626565A | Preparation process for polypropylene-base resin compositions | Chemistry; Metallurgy | 7 | Expired |
| US5041338A | Polypropylene composition | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4553413A | Washing machine | Physics | 6 | Expired |
| US7573162B2 | Linear motor | Electricity | 6 | Active |
| US7151336B2 | Rotor of reluctance motor | Electricity | 5 | Expired |
| US5153249A | Polypropylene resin compositions | Chemistry; Metallurgy | 4 | Expired |
| US4481131A | Electroconductive resin composition | Chemistry; Metallurgy | 3 | Expired |
| US5624621A | Process of making polyprophylene fibers | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4885162A | Polyolefin resin compositions | Chemistry; Metallurgy | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.