Hiroshi Katayama
134Patents
17h-index
136Co-inventors
89Inventor score
Filing activity: Jul 25, 1985 → Mar 24, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5794165A | Control unit for vehicle and total control system therefor | Emerging Cross-Sectional Technologies | 100 | Expired |
| US4672253A | Permanent magnet electrical machine with reduced cogging | Electricity | 91 | Expired |
| US6009370A | Control unit for vehicle and total control system therefor | Emerging Cross-Sectional Technologies | 86 | Expired |
| US5638272A | Control unit for vehicle and total control system therefor | Emerging Cross-Sectional Technologies | 56 | Expired |
| US6275542A | Direct conversion receiver including mixer down-converting incoming signal, and demodulator operating on downconverted signal | Electricity | 55 | Expired |
| US5490064A | Control unit for vehicle and total control system therefor | Emerging Cross-Sectional Technologies | 43 | Expired |
| US5925087A | Method and apparatus for eliminating noise in a slope estimation arrangement for a motor vehicle | Mechanical Engineering; Lighting; Heating | 39 | Expired |
| US6356746B1 | Direct converting receiver | Electricity | 34 | Expired |
| US7561448B2 | Power inverter | Emerging Cross-Sectional Technologies | 33 | Active |
| US6696812B2 | Control apparatus for electric motor | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5023924A | Speed control apparatus for movable equipment | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4980617A | Speed control apparatus of movable equipment | Electricity | 26 | Expired |
| US5432644A | Disk drive unit having motor components in a compact arrangement | Electricity | 24 | Expired |
| US5781588A | FSK signal receiver | Electricity | 21 | Expired |
| US5939112A | Method for producing a processed meat product by treatment with a salt and/or alkali solution and product | Human Necessities | 19 | Expired |
| US6079188A | Packaging container production equipment and packaging container production method | Performing Operations; Transporting | 17 | Expired |
| US5968100A | Vehicle control method and system therefor | Performing Operations; Transporting | 17 | Expired |
| US6693977B2 | Portable radio device with direct conversion receiver including mixer down-converting incoming signal, and demodulator operating on downconverted signal | Electricity | 17 | Expired |
| US6898246B2 | Apparatus and method for decoding an MPEG picture stream | Electricity | 16 | Expired |
| US5987075A | FSK signal receiver | Electricity | 16 | Expired |
| US6704415B1 | Echo canceler | Electricity | 16 | Expired |
| US5194919A | Optical type position detecting device | Physics | 15 | Expired |
| US4918346A | Low ripple-torque permanent magnet brushless motor | Electricity | 14 | Expired |
| US5298841A | Apparatus for controlling the speed of a moving object | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5175479A | Moving body position control apparatus and signal reproducing apparatus | Physics | 13 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.