Hiroshi Koyama
137Patents
15h-index
196Co-inventors
89Inventor score
Filing activity: Dec 31, 1974 → Nov 3, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4430547A | Cleaning device for a plasma etching system | Electricity | 60 | Expired |
| US6166684A | Artificial satellite navigation system and method | Physics | 53 | Expired |
| US6476467B2 | Semiconductor device and process for producing the same | Electricity | 37 | Expired |
| US6063321A | Method for forming a casting which includes an insert | Performing Operations; Transporting | 36 | Expired |
| US5107114A | Fine scanning mechanism for atomic force microscope | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4947042A | Tunnel unit and scanning head for scanning tunneling microscope | Emerging Cross-Sectional Technologies | 34 | Expired |
| US4880975A | Fine adjustment mechanism for a scanning tunneling microscope | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6307269A | Semiconductor device with chip size package | Electricity | 25 | Expired |
| US6309579A | Method for forming a casting which includes an insert | Performing Operations; Transporting | 20 | Expired |
| US7779792B2 | Air-cooled engine | Mechanical Engineering; Lighting; Heating | 19 | Active |
| US6792565B1 | Address conversion device for nonvolatile memory | Physics | 18 | Expired |
| US4945235A | Fine adjustment mechanism for a scanning tunneling microscope | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5391821A | Process for producing carboxylic acids | Chemistry; Metallurgy | 16 | Expired |
| US6034737A | TV set and a combination apparatus of a TV set and an AV amplifier | Electricity | 16 | Expired |
| US4602347A | Microcomputer addressing system and electronic timepiece utilizing the same | Physics | 16 | Expired |
| US4837445A | Coarse adjusting device of scanning tunneling microscope | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4566299A | Control method and apparatus for rolling mill | Performing Operations; Transporting | 15 | Expired |
| US4853341A | Process for forming electrodes for semiconductor devices using focused ion beams | Emerging Cross-Sectional Technologies | 15 | Expired |
| US10127639B2 | Image processing device having depth map generating unit, image processing method and non-transitory computer readable recording medium | Electricity | 15 | Active |
| US6627374B2 | Process and system for producing toner particles | Physics | 15 | Expired |
| US6060770A | Semiconductor device and process for producing the same | Electricity | 14 | Expired |
| US5032700A | Method of heating thermoplastic bottle of preform and method of controlling temperature of heating member utilized by the heating method | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5396297A | Character display device for displaying characters on a television screen | Electricity | 13 | Expired |
| US5225008A | Method for manufacturing a high-strength spring | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5680720A | Illuminated signboard | Emerging Cross-Sectional Technologies | 12 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.