Hiroshi Sawada
138Patents
18h-index
194Co-inventors
89Inventor score
Filing activity: Dec 30, 1975 → Jan 14, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6770544B2 | Substrate cutting method | Performing Operations; Transporting | 110 | Expired |
| US5970707A | Exhaust gas purification device for an internal combustion engine | Emerging Cross-Sectional Technologies | 99 | Expired |
| US6023039A | Method of cleaving a brittle material using a point heat source for providing a thermal stress | Emerging Cross-Sectional Technologies | 64 | Expired |
| US6186384A | Method of cleaving a brittle material using a point heat source for providing a thermal stress | Emerging Cross-Sectional Technologies | 64 | Expired |
| US6138453A | Exhaust gas purification device for an internal combustion engine | Emerging Cross-Sectional Technologies | 47 | Expired |
| US5518282A | Locking device for open-close mechanism of a cabinet | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4951388A | Method of mounting electronic components | Emerging Cross-Sectional Technologies | 36 | Expired |
| US5414996A | Device for detecting the degree of deterioration of a catalyst | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6259181A | Rotor core for reluctance motor | Electricity | 25 | Expired |
| US4653452A | Method and apparatus for controlling fuel supply of internal combustion engine | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US8307699B2 | Abnormality diagnosis apparatus and abnormality diagnosis method for NOx sensor | Emerging Cross-Sectional Technologies | 20 | Active |
| US6300703A | Rotor core for reluctance motor | Electricity | 20 | Expired |
| US4856048A | Mobile communication system | Electricity | 19 | Expired |
| US8219278B2 | NOx sensor malfunction diagnostic device and malfunction diagnostic method | Emerging Cross-Sectional Technologies | 19 | Active |
| US5983629A | Device for determining deterioration of a catalyst for an engine | Emerging Cross-Sectional Technologies | 19 | Expired |
| US7075827B2 | Function reconfigurable semiconductor device and integrated circuit configuring the semiconductor device | Electricity | 19 | Expired |
| US4882188A | Process for preparing heat treated granular solid food | Human Necessities | 19 | Expired |
| US6101424A | Method for manufacturing foundation garment | Human Necessities | 18 | Expired |
| US7162862B2 | Air-fuel ratio control apparatus for internal combustion engine | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7198952B2 | Catalyst deterioration detecting apparatus and method | Emerging Cross-Sectional Technologies | 18 | Expired |
| US8240130B2 | Abnormality diagnosis apparatus for exhaust purification system | Emerging Cross-Sectional Technologies | 17 | Active |
| US4364227A | Feedback control apparatus for internal combustion engine | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US7466337B2 | Construction machine | Fixed Constructions | 15 | Expired |
| US9021789B2 | Degradation diagnostic apparatus for NOx catalyst | Emerging Cross-Sectional Technologies | 15 | Active |
| US5416819A | Digital X-ray radiographic apparatus | Human Necessities | 14 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.