Akiyoshi Shimizu
27Patents
8h-index
39Co-inventors
75Inventor score
Filing activity: Jan 31, 1985 → Jun 22, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6649731B2 | Catalysts for polyester production, process for producing polyester, and polyester | Chemistry; Metallurgy | 39 | Expired |
| US6346070B1 | Catalyst for polyester production, process for producing polyester using the catalyst, polyester obtained by the process, and uses of the polyester | Chemistry; Metallurgy | 39 | Expired |
| US6269690A | Method for estimating a tire wear life | Physics | 17 | Expired |
| USD499695S1 | Tread portion of an automobile tire | General | 12 | Expired |
| US5955639A | Ethylene/alpha-olefin copolymer | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6212947A | Method for estimating a tire wear life | Physics | 11 | Expired |
| US5767331A | Ethylene/alpha-olefin copolymer | Emerging Cross-Sectional Technologies | 10 | Expired |
| USD669419S1 | Tread portion of an automobile tire | General | 9 | Active |
| US7067768B2 | Motor driven resistance spot welding gun | Performing Operations; Transporting | 8 | Expired |
| US4606152A | Method of polishing metal reed blades of air jet loom and apparatus therefor | Textiles; Paper | 8 | Expired |
| US6591880B1 | Pneumatic tire including zig-zag circumferential fine grooves | Performing Operations; Transporting | 6 | Expired |
| US6400718B1 | Cell switching device capable of effecting hit-less switching between an active system and a standby system | Electricity | 5 | Expired |
| US6959746B2 | Pneumatic tire | Emerging Cross-Sectional Technologies | 5 | Expired |
| US8191591B2 | Pneumatic tire | Performing Operations; Transporting | 5 | Active |
| US6153807A | Process for producing ethylene/alpha-olefin copolymer | Emerging Cross-Sectional Technologies | 5 | Expired |
| USRE40571E1 | Catalyst for polyester production, process for producing polyester using the catalyst, polyester obtained by the process, and uses of the polyester | General | 3 | Expired |
| US8851130B2 | Tire having rows of block land portions, lateral grooves and at least three circumferential grooves | Emerging Cross-Sectional Technologies | 2 | Active |
| US8800618B2 | Pneumatic tire having lug grooves | Performing Operations; Transporting | 2 | Active |
| US9308779B2 | Tire | Performing Operations; Transporting | 1 | Active |
| US6170547A | Pneumatic radial tire with helical belt layer | Emerging Cross-Sectional Technologies | 1 | Expired |
| US8863796B2 | Tire | Emerging Cross-Sectional Technologies | 1 | Active |
| US9186936B2 | Tire | Performing Operations; Transporting | 0 | Active |
| US9073391B2 | Tire | Performing Operations; Transporting | 0 | Active |
| US9139049B2 | Tire | Performing Operations; Transporting | 0 | Active |
| US11904636B2 | Pneumatic tire | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.