Hiroshi Tanigawa
29Patents
11h-index
33Co-inventors
75Inventor score
Filing activity: Jun 24, 1981 → Mar 17, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4882714A | Object detecting system using ultrasonic waves | Physics | 28 | Expired |
| US4896304A | Object detecting system using ultrasonic waves | Physics | 27 | Expired |
| US4814724A | Gain control circuit of current mirror circuit type | Electricity | 26 | Expired |
| US6266314A | Optical pickup device | Physics | 19 | Expired |
| US6307951A | Moving body detection method and apparatus and moving body counting apparatus | Physics | 18 | Expired |
| US6556533B1 | Optical pickup device | Physics | 17 | Expired |
| US5410349A | Solid-state image pick-up device of the charge-coupled device type synchronizing drive signals for a full-frame read-out | Electricity | 13 | Expired |
| US6256283A | Optical pickup having a common light beam path for passing either of a plurality of kinds of light beams | Physics | 13 | Expired |
| US6083369A | Heater control system for an air-fuel ratio sensor in an internal combustion engine | Physics | 13 | Expired |
| US5894143A | Solid-state image pick-up device for the charge-coupled device type synchronizing drive signals for a full-frame read-out | Electricity | 12 | Expired |
| US5182522A | Polar leapfrog filter | Electricity | 11 | Expired |
| US5376967A | Method and apparatus for driving a high resolution CCD image pickup device by transferring empty packets | Electricity | 9 | Expired |
| US5258716A | All-pass filter | Electricity | 9 | Expired |
| US7057448B2 | Variable output-type constant current source circuit | Physics | 8 | Expired |
| US5705837A | Solid-state image pick-up device of the charge-coupled device type synchronizing drive signals for a full-frame read-out | Electricity | 8 | Expired |
| US5216375A | Variable time-constant type differentiator | Electricity | 7 | Expired |
| US4767979A | Switching circuit device using current mirror circuits | Physics | 6 | Expired |
| US5467045A | Integrator including an offset eliminating circuit and capable of operating with low voltage | Physics | 6 | Expired |
| US5177382A | Active filter circuit | Electricity | 6 | Expired |
| US5298813A | Polar leapfrog filter | Electricity | 5 | Expired |
| US4387389A | Semiconductor filter using charge transfer device | Electricity | 5 | Expired |
| US4808856A | Low voltage phase comparator | Electricity | 5 | Expired |
| US5978026A | Solid-state image pickup device | Electricity | 3 | Expired |
| US5293086A | Polar leapfrog filter | Electricity | 2 | Expired |
| US6927559B2 | Constant voltage power supply | Physics | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.