Hitoshi Sakuma
44Patents
5h-index
75Co-inventors
72Inventor score
Filing activity: Dec 19, 1989 → Jul 13, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8981627B2 | Piezoelectric device with electrode films and electroconductive oxide film | Electricity | 23 | Active |
| US7261307B2 | Suspension arm | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5080208A | Shift lever apparatus for automatic transmission of vehicle | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5286275A | Powder mixture for powder metallurgy and binder therefor | Performing Operations; Transporting | 9 | Expired |
| US5610957A | Reactor core coolant flow rate control system for a BWR type nuclear power plant | Emerging Cross-Sectional Technologies | 5 | Expired |
| US9331262B2 | Thin film piezoelectric element, thin film piezoelectric actuator, thin film piezoelectric sensor, hard drive disk, and inkjet printer device | Performing Operations; Transporting | 5 | Active |
| US8994251B2 | Piezoelectric device having first and second non-metal electroconductive intermediate films | Electricity | 4 | Active |
| US10377418B2 | Suspension member for vehicle | Performing Operations; Transporting | 4 | Active |
| US7785697B2 | Thin film device | Emerging Cross-Sectional Technologies | 3 | Active |
| US9136820B2 | Piezoelectric device | Electricity | 3 | Active |
| US5132338A | Powder mixture used for powder metallurgy | Performing Operations; Transporting | 2 | Expired |
| US5328658A | Method of refining chromium-containing steel | Chemistry; Metallurgy | 2 | Expired |
| US5105134A | Wiper apparatus interlocking to washer | Emerging Cross-Sectional Technologies | 2 | Expired |
| US8186696B2 | Steering tie rod end made of steel and method of manufacturing the same | Chemistry; Metallurgy | 2 | Active |
| US7582908B2 | Nitride semiconductor device and manufacturing method thereof | Electricity | 2 | Active |
| US7879635B2 | Method for manufacturing semiconductor optical device | Electricity | 1 | Active |
| US8163576B2 | Nitride semiconductor device having a silicon-containing layer and manufacturing method thereof | Electricity | 1 | Active |
| US9685602B2 | Piezoelectric thin film element, piezoelectric actuator, piezoelectric sensor, hard-disk drive and ink jet printer device | Electricity | 1 | Active |
| US7964424B2 | Method for manufacturing nitride semiconductor light-emitting element | Electricity | 1 | Active |
| US9147827B2 | Piezoelectric element, piezoelectric actuator, piezoelectric sensor, hard disk drive, and inkjet printer device | Physics | 0 | Active |
| US8482096B2 | Semiconductor photodetector and manufacturing method therefor | Electricity | 0 | Active |
| US7791097B2 | Nitride semiconductor device and manufacturing method of the same | Electricity | 0 | Active |
| US9022532B1 | Piezoelectric element, piezoelectric actuator, piezoelectric sensor, hard disk drive, and ink-jet printer device | Electricity | 0 | Active |
| US7714439B2 | Nitride semiconductor device and method of manufacturing the same | Electricity | 0 | Active |
| US10964879B2 | Method of manufacturing a dielectric device | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.