Akio Hara
46Patents
20h-index
50Co-inventors
88Inventor score
Filing activity: Feb 26, 1971 → Sep 29, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4412980A | Method for producing a diamond sintered compact | Emerging Cross-Sectional Technologies | 151 | Expired |
| US6312324A | Superabrasive tool and method of manufacturing the same | Performing Operations; Transporting | 133 | Expired |
| US4334928A | Sintered compact for a machining tool and a method of producing the compact | Emerging Cross-Sectional Technologies | 122 | Expired |
| US4303442A | Diamond sintered body and the method for producing the same | Chemistry; Metallurgy | 120 | Expired |
| US4403015A | Compound sintered compact for use in a tool and the method for producing the same | Emerging Cross-Sectional Technologies | 119 | Expired |
| US5037704A | Hard sintered compact for a tool | Emerging Cross-Sectional Technologies | 91 | Expired |
| US4425315A | Diamond sintered compact wherein crystal particles are uniformly orientated in the particular direction and the method for producing the same | Emerging Cross-Sectional Technologies | 79 | Expired |
| US4333902A | Process of producing a sintered compact | Chemistry; Metallurgy | 67 | Expired |
| US4343651A | Sintered compact for use in a tool | Chemistry; Metallurgy | 60 | Expired |
| US4374900A | Composite diamond compact for a wire drawing die and a process for the production of the same | Emerging Cross-Sectional Technologies | 59 | Expired |
| US4333986A | Diamond sintered compact wherein crystal particles are uniformly orientated in a particular direction and a method for producing the same | Emerging Cross-Sectional Technologies | 58 | Expired |
| US4049876A | Cemented carbonitride alloys | Emerging Cross-Sectional Technologies | 50 | Expired |
| US4231762A | Method of producing a sintered diamond compact | Performing Operations; Transporting | 47 | Expired |
| US4150195A | Surface-coated cemented carbide article and a process for the production thereof | Emerging Cross-Sectional Technologies | 46 | Expired |
| US4643620A | Coated hard metal tool | Emerging Cross-Sectional Technologies | 44 | Expired |
| US6027247A | X-ray photographing apparatus | Human Necessities | 42 | Expired |
| US4008090A | Process for the production of tungsten carbide or mixed metal carbides | Chemistry; Metallurgy | 29 | Expired |
| US4370149A | Diamond compact for a wire drawing die and a process for the production of the same | Performing Operations; Transporting | 26 | Expired |
| US4171973A | Diamond/sintered carbide cutting tool | Performing Operations; Transporting | 23 | Expired |
| US4225344A | Process for producing sintered hard metals and an apparatus therefor | Performing Operations; Transporting | 22 | Expired |
| US4389465A | Sintered compact for use in a tool and the method for producing the same | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4265662A | Hard alloy containing molybdenum and tungsten | Chemistry; Metallurgy | 19 | Expired |
| US4880707A | Stick of composite materials and process for preparation thereof | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4639352A | Hard alloy containing molybdenum | Chemistry; Metallurgy | 18 | Expired |
| US5955212A | Superhard film-coated member and method of manufacturing the same | Emerging Cross-Sectional Technologies | 15 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.