Mitsuo Tanaka
68Patents
16h-index
103Co-inventors
87Inventor score
Filing activity: Jun 4, 1974 → Jun 17, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4199222A | Optical device with a laser-to-fiber coupler | Physics | 68 | Expired |
| US5394231A | Image forming apparatus capable of forming an erasable image | Physics | 65 | Expired |
| US4603674A | Gas-diesel dual fuel engine | Emerging Cross-Sectional Technologies | 64 | Expired |
| US3973828A | Optical wave guide | Chemistry; Metallurgy | 36 | Expired |
| US4030809A | Optical connector | Physics | 33 | Expired |
| US5402220A | Fixing device for an image forming apparatus featuring a fixing belt and heating control | Physics | 31 | Expired |
| US5064255A | Opening/closing device of a door member | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| USD324234S | Printer for electronic computer | General | 25 | Expired |
| US4098501A | Cassette type sheet feed apparatus for copying machine or the like | Performing Operations; Transporting | 25 | Expired |
| US4947583A | Opening/closing device of a door member | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4504943A | Time domain multiplexer | Electricity | 23 | Expired |
| US4410980A | Time division multiplexing system | Electricity | 22 | Expired |
| US4601963A | Locally deformable photosensitive drum for use in electrophotography | Physics | 21 | Expired |
| US5122177A | Method of and system for pressing sheet glass | Chemistry; Metallurgy | 21 | Expired |
| US4106329A | Solid or water quantity measurement apparatus using microwaves | Physics | 18 | Expired |
| US4032229A | Construction of electrophotographic copying machines with a cleaning unit for photosensitive surface | Physics | 17 | Expired |
| US6007355A | Rotary connector for connecting cables | Electricity | 16 | Expired |
| US4260883A | Optical measurement system | Physics | 16 | Expired |
| US5132719A | Method and apparatus for duplex printing wherein the interleave number changes in response to detected sheet length change | Physics | 16 | Expired |
| US4975738A | Method of forming an image on both sides of a sheet | Physics | 14 | Expired |
| US6796809B2 | Electrical junction box | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6668589B1 | Method of shaping sheet glass | Chemistry; Metallurgy | 12 | Expired |
| US4331100A | Magnetic brush development apparatus | Physics | 12 | Expired |
| US4732054A | Stepless speed change device | Performing Operations; Transporting | 11 | Expired |
| USD328290S | Image scanner or similar article | General | 11 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.