Tadashi Koyama
54Patents
14h-index
66Co-inventors
87Inventor score
Filing activity: Apr 17, 1985 → Jan 12, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5020001A | Robot controller | Physics | 93 | Expired |
| US7007512B2 | Method for machining glass substrate | Emerging Cross-Sectional Technologies | 46 | Expired |
| US5684071A | Additive for thermpolastic resins and flame retardant resin composition | Chemistry; Metallurgy | 35 | Expired |
| US6174943A | Flame-retardant thermoplastic resin composition | Chemistry; Metallurgy | 29 | Expired |
| US6143382A | Glass substrate having fine holes | Emerging Cross-Sectional Technologies | 29 | Expired |
| US6924457B2 | Laser processing method to a class substrate and an optical diffraction element obtained thereby, and a method for manufacturing optical elements | Emerging Cross-Sectional Technologies | 27 | Expired |
| US5871570A | Flame-retardant resin composition | Emerging Cross-Sectional Technologies | 23 | Expired |
| US6291797A | Laser machining method for glass substrate, diffraction type optical device fabricated by the machining method, and method of manufacturing optical device | Emerging Cross-Sectional Technologies | 20 | Expired |
| US8335470B2 | Communication apparatus and method for controlling the same | Electricity | 18 | Active |
| US5910256A | Method for manufacturing a diffraction type optical element | Physics | 15 | Expired |
| US6329451A | Flame retardant plastic resin composition | Chemistry; Metallurgy | 14 | Expired |
| US6220058A | Method of changing the surface of a glass substrate containing silver, by using a laser beam | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6397161B1 | Method for stabilizing output of rain sensor and protection method therefor | Performing Operations; Transporting | 14 | Expired |
| US5951731A | Laser processing method to a micro lens | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6285037A | Liquid drop detection method and apparatus therefor | Performing Operations; Transporting | 13 | Expired |
| US5998782A | Water drop detector on transparent substrate | Performing Operations; Transporting | 13 | Expired |
| US5991049A | Transparent substrate having rain sensor | Performing Operations; Transporting | 12 | Expired |
| US4580085A | Feed control system with a safety device | Physics | 12 | Expired |
| US6019606A | Robot teaching machine | Physics | 11 | Expired |
| US6262389A | Laser-processable glass substrate and laser processing method | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5279868A | Method of preparing ultrafine particle dispersion material | Chemistry; Metallurgy | 10 | Expired |
| US6645603B2 | Laser processing method to a glass substrate and an optical diffraction element obtained thereby, and a method for manufacturing optical elements | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6476975B1 | Mother glass composition for graded index lens | Chemistry; Metallurgy | 10 | Expired |
| US7280075B2 | Wireless communication terminal device | Electricity | 9 | Expired |
| US5917603A | Wiper control apparatus | Performing Operations; Transporting | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.