Hitoshi Imai
66Patents
8h-index
42Co-inventors
78Inventor score
Filing activity: Dec 1, 1987 → Aug 29, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5486948A | Stereo image forming apparatus having a light deflection member in each optical path | Electricity | 108 | Expired |
| US5016232A | Magneto-optic information-carrying medium including three magnetic layers | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4862442A | Focus detecting apparatus utilizing reflecting surface having variable reflectivity or transmissivity | Physics | 19 | Expired |
| US7590948B2 | Display information selection apparatus and method, program and recording medium | Electricity | 18 | Active |
| US4841507A | Optical head for an optical recording and reproducing apparatus | Physics | 16 | Expired |
| US5313441A | Optical recording and reproducing apparatus having a pickup head including a main prism with reflecting surfaces for splitting the reflected beam | Physics | 14 | Expired |
| US5025430A | Magneto-optic recording and reproducing apparatus including a multiple layer recording medium having a premagnetized bias layer replacing an external bias magnetic | Physics | 13 | Expired |
| US5111041A | Means for securing a photodetector to a base plate or the like | Electricity | 8 | Expired |
| US6631542B1 | Method of manufacturing laminated ring and heat treatment apparatus for use in such method | Emerging Cross-Sectional Technologies | 7 | Expired |
| US7818688B2 | Information browsing apparatus and method, program and recording medium | Physics | 7 | Active |
| US6550122B1 | Method of manufacturing laminated ring | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5007266A | Successive cold working process | Performing Operations; Transporting | 6 | Expired |
| US5051975A | Optical recording and/or reproducing apparatus having a temperature adjusting device | Physics | 6 | Expired |
| US6886076B1 | Semiconductor integrated circuit device having connection pads for superposing expansion memory | Electricity | 6 | Expired |
| US5199012A | Apparatus for detecting positional deviation of a moving stage in a two-stage optical recording/producing apparatus | Physics | 5 | Expired |
| US6712700B1 | Stereo model displaying method and apparatus in video game, game apparatus, and computer-readable recording medium stored with stereo model displaying program for video game | Human Necessities | 5 | Expired |
| US6549202B1 | Rendering method and device, a game device, and a computer readable recording medium storing programs for rendering a three-dimensional model | Physics | 5 | Expired |
| US10905958B2 | Game device, control method, and non-transitory computer-readable medium | Human Necessities | 5 | Active |
| US4881204A | Optical reading or writing apparatus | Physics | 4 | Expired |
| US11497996B2 | Game device, control method, control program, and computer-readable recording medium having control program recorded therein | Human Necessities | 4 | Active |
| US4962479A | Optical data storage system with wavelength selective laminate | Physics | 4 | Expired |
| US9270237B2 | Semiconductor memory with threshold current setting circuit | Electricity | 3 | Active |
| US7864955B2 | Print system, control method therefor, information processing apparatus, control method therefor, program for implementing the control method, and storage medium storing the control program | Electricity | 3 | Active |
| US11161040B2 | Game device, control method, control program, and computer-readable recording medium having control program recorded therein | Human Necessities | 3 | Active |
| US7168279B2 | Method of manufacturing metal ring for endless metal belt | Performing Operations; Transporting | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.