Keisuke Takeda
30Patents
5h-index
31Co-inventors
69Inventor score
Filing activity: Aug 7, 1998 → Jun 30, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5988125A | Variable valve actuation apparatus for engine | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| US6041746A | Variable valve actuation apparatus | Emerging Cross-Sectional Technologies | 28 | Expired |
| US6390041B2 | Variable-valve-actuation apparatus for internal combustion engine | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US6123053A | Variable valve actuation apparatus for internal combustion engines | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US6055949A | Variable valve actuator apparatus | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US8770566B2 | Removably supporting mechanism for workpiece holding device and workpiece holding device replacement and support apparatus | Performing Operations; Transporting | 4 | Active |
| US10632581B2 | Workpiece conveying apparatus for a pressing machine | Performing Operations; Transporting | 3 | Active |
| US6568361B2 | Valve operating device for internal combustion engines | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US10052678B2 | Workpiece conveying apparatus for a pressing machine | Performing Operations; Transporting | 3 | Active |
| US7171931B2 | Variable valve system with control shaft actuating mechanism | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US10293444B2 | Workpiece conveying apparatus for a pressing machine | Performing Operations; Transporting | 2 | Active |
| US10166683B2 | Workpiece conveying apparatus for a pressing machine | Performing Operations; Transporting | 1 | Active |
| US7827946B2 | Engine valve lifter mechanism of internal combustion engine | Emerging Cross-Sectional Technologies | 1 | Active |
| US9339861B2 | Breakage prevention mechanism of transfer apparatus and transfer apparatus using thereof | Performing Operations; Transporting | 1 | Active |
| US11014216B2 | Workpiece holding tool changing system for a workpiece conveying apparatus of a transfer press machine | Performing Operations; Transporting | 1 | Active |
| US12275748B2 | Amidinate compound, dimer compound thereof, thin-film forming raw material, and method of producing thin film | Chemistry; Metallurgy | 1 | Active |
| US12104245B2 | Compound, thin-film forming raw material that contains said compound, and method of manufacturing thin film | Electricity | 1 | Active |
| US7077086B2 | Variable valve system with control shaft actuating mechanism | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US11554492B2 | Workpiece conveying system, conveyed workpiece number detector, and control method for the workpiece conveying system | Performing Operations; Transporting | 0 | Active |
| US12264168B2 | Ruthenium compound, thin-film forming raw material, and method of producing thin film | Emerging Cross-Sectional Technologies | 0 | Active |
| US8628130B2 | Workpiece transfer apparatus for press machine and crossbar unit | Performing Operations; Transporting | 0 | Active |
| US12371778B2 | Cobalt compound, thin-film forming raw material, thin-film, and method of producing thin-film | Chemistry; Metallurgy | 0 | Active |
| US10300520B2 | Workpiece conveying apparatus for a pressing machine with two robots | Performing Operations; Transporting | 0 | Active |
| US11673180B2 | Workpiece conveying system for a transfer press machine | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US12275111B2 | Workpiece conveying apparatus and mounting and dismounting support mechanism for a workpiece holding device thereof | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.