Toshiba Tungaloy Co., Ltd.
37Patents
0Active
37Granted
37Portfolio score
Filing activity: Jul 19, 1978 → Mar 26, 2004
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4830930A | Surface-refined sintered alloy body and method for making the same | Emerging Cross-Sectional Technologies | 60 | Expired |
| US4949511A | Super abrasive grinding tool element and grinding tool | Performing Operations; Transporting | 46 | Expired |
| US4609633A | Silicon nitride sintered body and method for preparing the same | Chemistry; Metallurgy | 34 | Expired |
| US4985070A | High strength nitrogen-containing cermet and process for preparation thereof | Performing Operations; Transporting | 32 | Expired |
| US5509558A | Metal oxide resistor, power resistor, and power circuit breaker | Chemistry; Metallurgy | 28 | Expired |
| US6284356A | Aluminum oxide-coated tool member | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5238335A | Reamer | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5204167A | Diamond-coated sintered body excellent in adhesion and process for preparing the same | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4590034A | Method for preparing sintered body containing cubic boron nitride and method for preparing cubic boron nitride | Chemistry; Metallurgy | 23 | Expired |
| US4731303A | Cubic boron nitride coated material and producing method of the same | Chemistry; Metallurgy | 21 | Expired |
| US5993506A | Plate-crystalline tungsten carbide-containing hard alloy, composition for forming plate-crystalline tungsten carbide and process for preparing said hard alloy | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4545968A | Methods for preparing cubic boron nitride sintered body and cubic boron nitride, and method for preparing boron nitride for use in the same | Chemistry; Metallurgy | 20 | Expired |
| US6723389B2 | Process for producing coated cemented carbide excellent in peel strength | Chemistry; Metallurgy | 18 | Expired |
| US4762729A | Method of producing cubic boron nitride coated material | Chemistry; Metallurgy | 16 | Expired |
| US4591303A | Drilling tool | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4175896A | Ball endmill | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5100703A | Diamond-coated sintered body excellent in adhesion and process for preparing the same | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5918103A | Plate-crystalline tungsten carbide-containing hard alloy, composition for forming plate-crystalline tungsten carbide and process for preparing said hard alloy | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4712334A | Anti-clogging device for grinding wheel | Performing Operations; Transporting | 12 | Expired |
| US5223350A | Mold material for molding of an optical part and process for producing the same | Chemistry; Metallurgy | 12 | Expired |
| US5127949A | Wet friction material | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US5890853A | Drill and drill tip | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6627335B2 | Coated cutting tool and method for producing the same | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4990410A | Coated surface refined sintered alloy | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6379798B1 | Laminated coated-material for cutting tool | Emerging Cross-Sectional Technologies | 10 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.