Tamotsu Nakamura
21Patents
7h-index
14Co-inventors
66Inventor score
Filing activity: May 21, 1979 → Sep 26, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4367162A | Catalyst for purifying exhaust gases and a method for producing the catalyst | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4316822A | Catalyst for purifying exhaust gases | Emerging Cross-Sectional Technologies | 25 | Expired |
| US4308018A | Trim-tilt device for marine propulsion devices | Performing Operations; Transporting | 21 | Expired |
| US5975968A | Trim-tilt device for marine propulsion unit | Performing Operations; Transporting | 11 | Expired |
| US5876259A | Tilt cylinder apparatus for boat propeller unit | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US5720637A | Power tilt cylinder device | Performing Operations; Transporting | 7 | Expired |
| US5802953A | Power tilt cylinder device | Performing Operations; Transporting | 7 | Expired |
| US6039617A | Tilt cylinder device for outboard motor | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US5141659A | Lubricating agent for use in warm and hot forging | Chemistry; Metallurgy | 7 | Expired |
| US5882235A | Power tilt cylinder device | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6165032A | Tilt cylinder device for outboard motor | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US6042435A | Tilt-trim device for marine propulsion device | Performing Operations; Transporting | 5 | Expired |
| US6332817A | Trim-tilt device for marine propulsion unit | Performing Operations; Transporting | 4 | Expired |
| US6328616A | Trim-tilt device for a marine propulsion unit | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US6062924A | Tilt lock device for outboard motor | Performing Operations; Transporting | 4 | Expired |
| US6123590A | Tilt lock device for outboard motor | Performing Operations; Transporting | 3 | Expired |
| US6213823A | Trim-tilt device for marine propulsion unit | Performing Operations; Transporting | 3 | Expired |
| US6293837A | Trim-tilt device for marine propulsion unit | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US6390867B1 | Tilt device for marine propulsion unit | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US6390868B1 | Tilt device for marine propulsion unit | Performing Operations; Transporting | 1 | Expired |
| USD474202S1 | Tilt device for marine propulsion unit | General | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.