Minoru Ohta
64Patents
18h-index
85Co-inventors
87Inventor score
Filing activity: Apr 12, 1974 → May 15, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5898511A | Process for making holograms and holography device | Physics | 112 | Expired |
| US5604611A | Hologram | Physics | 103 | Expired |
| US5313317A | Hologram | Physics | 44 | Expired |
| US3931050A | Catalyst for purifying exhaust gas from vehicles | Performing Operations; Transporting | 30 | Expired |
| US4453397A | Gas detecting sensor | Physics | 30 | Expired |
| US4819037A | Semiconductor device | Electricity | 29 | Expired |
| US6340055B1 | Heat exchanger having multi-hole structured tube | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US4413502A | Gas detecting sensor | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4439707A | Spark plug with a wide discharge gap | Electricity | 23 | Expired |
| US5874664A | Air fuel ratio sensor and method for assembling the same | Physics | 23 | Expired |
| US4308518A | Gas component detector | Electricity | 22 | Expired |
| US4912975A | Direct-heated flow measuring apparatus having improved response characteristics | Physics | 22 | Expired |
| US5127191A | Door construction of an automobile | Performing Operations; Transporting | 20 | Expired |
| US4833912A | Flow measuring apparatus | Physics | 19 | Expired |
| US5900129A | Oxygen concentration sensor | Physics | 19 | Expired |
| US4450428A | Gas detecting sensor | Physics | 18 | Expired |
| US4783996A | Direct-heated flow measuring apparatus | Physics | 18 | Expired |
| US5762771A | Air-fuel ratio sensor | Physics | 18 | Expired |
| US4627279A | Direct-heated gas-flow measuring apparatus | Physics | 17 | Expired |
| US4258563A | Gas sensor | Physics | 16 | Expired |
| US4717571A | Method for manufacturing a dessert having an ornamental pattern | Human Necessities | 15 | Expired |
| US5545377A | Catalyst degradation detecting apparatus | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4294801A | Gas component detector | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6258234A | Air fuel ratio sensor | Physics | 14 | Expired |
| US4303613A | Gas sensing apparatus | Physics | 14 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.