Hiroshi Naka
24Patents
9h-index
42Co-inventors
75Inventor score
Filing activity: Feb 14, 1977 → Feb 6, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5645624A | Granular fertilizer with a multilayer coating | Chemistry; Metallurgy | 37 | Expired |
| US6461059B2 | Photo-electronic device and method of producing the same | Electricity | 28 | Expired |
| US5761580A | Photoreceptor drum driving mechanism | Physics | 26 | Expired |
| US6282350A | Photoelectronic device and method of manufacturing the same | Electricity | 22 | Expired |
| US5344130A | Device for further processing after copying | Emerging Cross-Sectional Technologies | 22 | Expired |
| US7275453B2 | Analyzing apparatus and fine particle collecting apparatus | Physics | 11 | Expired |
| US6476379B2 | Optoelectronic devices and manufacturing method thereof | Physics | 11 | Expired |
| US6490497B1 | Working process end point real time determination method | Physics | 10 | Expired |
| US6721511B1 | Optical communication equipment and optical communication network equipment | Physics | 10 | Expired |
| US6371664B1 | Photoelectronic device and method of manufacturing the same | Electricity | 9 | Expired |
| US5435535A | Device for further processing after copying | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6443632B1 | Photo-electronic device and method of producing the same | Electricity | 8 | Expired |
| US5639079A | Device for further processing after copying | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5605322A | Device for further processing after copying | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4692927A | Light emitting device with improved electrode structure to minimize short circuiting | Electricity | 7 | Expired |
| US4779281A | Light emitting chip and optical communication apparatus using the same | Electricity | 7 | Expired |
| US4701927A | Light emitting chip and optical communication apparatus using the same | Electricity | 7 | Expired |
| US5480130A | Device for further processing after copying | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4785455A | Light emitting device with improved electrode structure to minimize short circuiting | Electricity | 3 | Expired |
| US7052189B2 | Optical electronic device | Electricity | 3 | Expired |
| US6341027B1 | Module for optical communication | Physics | 3 | Expired |
| US6668140B2 | Module for optical communication | Physics | 2 | Expired |
| US4094676A | Non-silver salt type photosensitive composition | Physics | 0 | Expired |
| USRE34378E | Light emitting device with improved electrode structure to minimize short circuiting | General | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.