Chikahisa Hayashi
17Patents
11h-index
28Co-inventors
68Inventor score
Filing activity: Apr 11, 1983 → Jun 4, 1992
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4843477A | Vehicle television receiver system | Performing Operations; Transporting | 115 | Expired |
| US5198629A | Steering wheel having insert molded membrane switch | Electricity | 47 | Expired |
| US4647722A | Land mobile telephone system | Emerging Cross-Sectional Technologies | 31 | Expired |
| US4627280A | Inductance liquid level meter | Physics | 23 | Expired |
| US4909080A | Ultrasonic level gauge | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4723265A | Abreviated dialer with reduced key operations | Electricity | 19 | Expired |
| US4766326A | Communication structure in a steering wheel | Performing Operations; Transporting | 16 | Expired |
| US4891980A | Liquid level gauge | Physics | 14 | Expired |
| US4981039A | Liquid level gauge | Physics | 14 | Expired |
| US4831878A | Structure for mounting liquid level meter | Physics | 11 | Expired |
| US4845986A | Liquid level indication device | Physics | 11 | Expired |
| US4926015A | Liquid level sensor having a retained base plate | Electricity | 8 | Expired |
| US4543602A | Surface inspection method | Physics | 6 | Expired |
| US4988973A | Steering wheel | Performing Operations; Transporting | 4 | Expired |
| US4804857A | Relay mechanism for a steering wheel | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4553212A | Leakage inspection device for brake hoses | Physics | 3 | Expired |
| US4868355A | Steering wheel segmented slip ring and contact pin assembly | Electricity | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.