Akio Fukushima
60Patents
13h-index
124Co-inventors
87Inventor score
Filing activity: Aug 8, 1979 → Apr 14, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6023935A | Air conditioner | Emerging Cross-Sectional Technologies | 50 | Expired |
| US4771610A | Multiroom air conditioner | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| US7764136B2 | Microwave transmission line integrated microwave generating element and microwave transmission line integrated microwave detecting element | Electricity | 33 | Active |
| US4458502A | Air conditioning device | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5528574A | Disk reproducing apparatus capable of increasing speed of access to disks recorded at constant linear velocity | Physics | 29 | Expired |
| US7113613B2 | Watermark information detection method | Physics | 26 | Expired |
| US6484318B1 | CATV communication system and method for the internet connection | Electricity | 25 | Expired |
| US7556869B2 | Electronic device and wiring with a current induced cooling effect, and an electronic device capable of converting a temperature difference into voltage | Emerging Cross-Sectional Technologies | 20 | Active |
| US6002655A | Optical disc apparatus accessing method and system therefor | Physics | 18 | Expired |
| US8107281B2 | Magnetoresistive element and magnetic memory | Emerging Cross-Sectional Technologies | 18 | Active |
| US5546381A | Spread spectrum communication system and method, using sequentially phase shifted M-sequence codes | Electricity | 18 | Expired |
| US8680632B2 | Magnetoresistive element and magnetic memory | Electricity | 18 | Active |
| US9182304B2 | Power meter, power measurement method, program and storage medium | Physics | 14 | Active |
| US6262957A | Method and apparatus for automatically discriminating types of optical disks | Physics | 12 | Expired |
| US5299634A | Indoor unit of a ventilation system, ventilation and air conditioner | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4526010A | Separation type air conditioner | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US8208292B2 | Magnetoresistive element and magnetic memory | Emerging Cross-Sectional Technologies | 8 | Active |
| US8013408B2 | Negative-resistance device with the use of magneto-resistive effect | Electricity | 8 | Active |
| US5241371A | Image display control apparatus and still picture reproducing system | Emerging Cross-Sectional Technologies | 8 | Expired |
| US8521795B2 | Random number generating device | Physics | 7 | Active |
| US6317403A | Optical disc apparatus accessing method and system therefor | Physics | 7 | Expired |
| US4959733A | Motor rotation control apparatus with motor rotational frequency memory | Physics | 7 | Expired |
| US7145851B2 | Optical disk apparatus and information recording apparatus | Physics | 7 | Expired |
| US6108291A | Optical disc apparatus accessing method and system therefor | Physics | 7 | Expired |
| US9087980B2 | Magnetoresistive element and magnetic memory | Electricity | 6 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.