Kunio Ohtsuka
51Patents
14h-index
10Co-inventors
81Inventor score
Filing activity: Jul 25, 1974 → Aug 27, 1996
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4748869A | Automatic transmission for an automotive vehicle | Mechanical Engineering; Lighting; Heating | 124 | Expired |
| US4483215A | Transmission with overdrive | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US4334441A | Gearshift timing control arrangement for automatic power transmission | Mechanical Engineering; Lighting; Heating | 28 | Expired |
| US4324156A | Method and apparatus for hydraulic control of automatic transmission | Mechanical Engineering; Lighting; Heating | 25 | Expired |
| US4270636A | Lock-up control system for a torque converter including a timing arrangement | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4294140A | Hydraulic torque converter control system | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US5680886A | Impact energy absorber | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US4274308A | Shock control arrangement in hydraulic control system | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4274307A | Shock control arrangement in hydraulic control system of automatic power transmission | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4225026A | Clutch mechanism for automatic power transmission | Mechanical Engineering; Lighting; Heating | 17 | Expired |
| US5360775A | Porous clay intercalation compound and its production method | Chemistry; Metallurgy | 16 | Expired |
| US4223570A | Power transmission for automotive vehicle | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4308765A | Line pressure control device for the hydraulic control system of an automatic power transmission | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4271939A | Hydraulic control system for a hydrokinetic torque converter | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4020718A | Hydraulic system for an automatic power transmission | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US4382496A | Torque converter with lockup clutch unit | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US4261227A | Automatic transmission for transverse engine of front-drive automotive vehicle | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4313354A | Downshift valve in hydraulic transmission control system | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4366724A | Transverse axle automatic transmission | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4325271A | Shock control arrangement in hydraulic control system of automatic power transmission | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4462280A | Manual valve for hydraulic control system for automatic transmission | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5064791A | Method of preparing ceramic composite powders and the powders obtained thereby | Chemistry; Metallurgy | 9 | Expired |
| US4307631A | Interlock preventive device for automatic power transmission | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4271721A | Housing for front-drive automatic transmission for transverse engine of automotive vehicle | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4369865A | Lock-up control system for a torque converter | Mechanical Engineering; Lighting; Heating | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.