Tetsuo Nakai
47Patents
22h-index
37Co-inventors
85Inventor score
Filing activity: Jan 21, 1981 → Sep 9, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4636253A | Diamond sintered body for tools and method of manufacturing same | Chemistry; Metallurgy | 210 | Expired |
| US4403015A | Compound sintered compact for use in a tool and the method for producing the same | Emerging Cross-Sectional Technologies | 119 | Expired |
| US5934542A | High strength bonding tool and a process for production of the same | Electricity | 104 | Expired |
| US5712030A | Sintered body insert for cutting and method of manufacturing the same | Emerging Cross-Sectional Technologies | 102 | Expired |
| US5700551A | Layered film made of ultrafine particles and a hard composite material for tools possessing the film | Emerging Cross-Sectional Technologies | 93 | Expired |
| US4505746A | Diamond for a tool and a process for the production of the same | Emerging Cross-Sectional Technologies | 92 | Expired |
| US5037704A | Hard sintered compact for a tool | Emerging Cross-Sectional Technologies | 91 | Expired |
| US6302225A | Polycrystal diamond tool | Emerging Cross-Sectional Technologies | 84 | Expired |
| US5759216A | Diamond sintered body having high strength and high wear-resistance and manufacturing method thereof | Performing Operations; Transporting | 70 | Expired |
| US5882777A | Super hard composite material for tools | Emerging Cross-Sectional Technologies | 69 | Expired |
| US6737178B2 | Coated PCBN cutting tools | Emerging Cross-Sectional Technologies | 54 | Expired |
| US5853873A | Hard composite material for tools | Emerging Cross-Sectional Technologies | 48 | Expired |
| US5366522A | Polycrystalline diamond cutting tool and method of manufacturing the same | Chemistry; Metallurgy | 44 | Expired |
| US6342301B1 | Diamond sintered compact and a process for the production of the same | Emerging Cross-Sectional Technologies | 43 | Expired |
| US5178645A | Cutting tool of polycrystalline diamond and method of manufacturing the same | Emerging Cross-Sectional Technologies | 42 | Expired |
| US6155755A | Hard sintered body tool | Emerging Cross-Sectional Technologies | 40 | Expired |
| US6261329A | Diamond sintered body having high strength and high wear resistance, and tool including the same | Emerging Cross-Sectional Technologies | 36 | Expired |
| US5020394A | Polycrystal diamond fluted tool and a process for the production of the same | Emerging Cross-Sectional Technologies | 35 | Expired |
| US5294381A | Method of manufacturing a diamond heat sink | Electricity | 35 | Expired |
| US6528159B1 | Sintered diamond tool and method for manufacturing the same | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4911756A | Hard sintered compact for tools | Chemistry; Metallurgy | 30 | Expired |
| US6337152B1 | Cutting tool made of A12O3-coated cBN-based sintered material | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5299214A | Heat radiating component and semiconductor device provided with the same | Electricity | 21 | Expired |
| US4389465A | Sintered compact for use in a tool and the method for producing the same | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6008153A | High-pressure phase boron nitride base sinter | Chemistry; Metallurgy | 20 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.