Hiroshi Narai
7Patents
5h-index
18Co-inventors
56Inventor score
Filing activity: Oct 9, 1990 → Mar 19, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5630668A | Thrust needle-shaped roller bearing, rolling bearing, and cage of the thrust needle-shaped roller bearing | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5611250A | Rolling/sliding part | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5298323A | Bearing steel and rolling bearing made thereof | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5415705A | Rolling bearing | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5256213A | Bearing steel | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5520987A | Rolling/sliding member | Emerging Cross-Sectional Technologies | 4 | Expired |
| US7207223B2 | Toroidal-type continuously variable transmission component and method for evaluating the same | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.