Hiroyoshi Funato
42Patents
15h-index
48Co-inventors
81Inventor score
Filing activity: Apr 5, 1977 → Aug 2, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4987299A | Rotation quantity measuring method and system | Physics | 113 | Expired |
| US5208800A | Mode splitter and magneto-optical signal detection device | Physics | 79 | Expired |
| US6072579A | Optical pickup apparatus having improved holographic optical element and photodetector | Physics | 41 | Expired |
| US5481636A | Wavelength conversion element | Physics | 39 | Expired |
| US4876680A | Monolithic optical pick-up using an optical waveguide | Physics | 37 | Expired |
| US4637679A | Multibeam photoscanner | Electricity | 31 | Expired |
| US9188674B2 | Laser radar device | Physics | 30 | Active |
| US4505537A | Light scanning apparatus | Physics | 26 | Expired |
| US4712852A | Hologram disk for deflecting a light beam | Physics | 21 | Expired |
| US5684779A | Optical head with forward and reflected light beams propagating through a dual diffraction grating device along a common path | Physics | 21 | Expired |
| US4971414A | Optical information record/read apparatus | Physics | 20 | Expired |
| US4761046A | Laser beam recording method | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5333231A | Wavelength conversion element | Physics | 16 | Expired |
| US4355858A | Hologram lens | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5175642A | Light source unit capable of changing size of light beam spot and optical scanning image recording apparatus using the same | Physics | 15 | Expired |
| US5119452A | High efficiency prism coupling device and method for producing the same | Physics | 13 | Expired |
| US4149269A | Holographic reading apparatus with an area identification and density reference scan | Physics | 13 | Expired |
| US4678263A | Photo scanner device | Physics | 13 | Expired |
| US5124835A | Optical scanning apparatus | Electricity | 12 | Expired |
| US5355220A | Optical movement measuring method and apparatus using interference fringes generated by overlapping spots of diffracted lights of different orders of diffraction from a line source | Physics | 11 | Expired |
| US5031978A | Recording optical system | Electricity | 10 | Expired |
| US4154500A | Exposure optical system for electrostatic copying machine or the like | Physics | 10 | Expired |
| US5402154A | Optical recording system capable of changing the beam size | Physics | 8 | Expired |
| US5195071A | Focus detecting optical head | Physics | 7 | Expired |
| US6822771B2 | Optical pickup unit and optical disk drive for accurate and stable information recording and reproduction | Physics | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.