Hiroki Ishida
48Patents
12h-index
93Co-inventors
84Inventor score
Filing activity: Nov 7, 1991 → Jul 16, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6905413B1 | Music game system | Physics | 51 | Expired |
| US6366375B1 | Optical-signal transmission apparatus and method, and signal processing apparatus | Electricity | 38 | Expired |
| US5267910A | Silent chain having improved noise reduction | Mechanical Engineering; Lighting; Heating | 30 | Expired |
| US7442139B2 | Conveyance system | Mechanical Engineering; Lighting; Heating | 21 | Active |
| US6733689B1 | Liquid-crystalline composition for printing inks, coatings and counterfeit-proof marking of articles | Chemistry; Metallurgy | 20 | Expired |
| US6128155A | High density magnetic recording apparatus including a hologram type magnetic head positioning system | Physics | 19 | Expired |
| US5593360A | Planetary gear system | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5242334A | Rocker pin type friction transmission chain | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US6634812B2 | Optical bus system and signal processor | Electricity | 16 | Expired |
| US5236399A | Silent chain | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US6800337B1 | Thermal insulating coating | Chemistry; Metallurgy | 14 | Expired |
| US5215505A | Endless belt for variable ratio power transmission | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US6899824B2 | Liquid-crystalline composition for printing inks, coatings and counterfeit-proof marking of articles | Chemistry; Metallurgy | 11 | Expired |
| US5242333A | Rocker-pin type friction gearing chain | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5176584A | Silent chain | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US7914409B2 | Oil-free chain | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US6317242A | Optical bus system and signal processor | Electricity | 7 | Expired |
| US7366269B2 | False lock detection circuit and false lock detection method, PLL circuit and clock data recovery method, communication device and communication method, and optical disk reproducing device and optical disk reproducing method | Electricity | 4 | Active |
| US5938553A | Low noise chain | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US7635314B2 | Chain transmission | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US6055122A | Magnetic recording apparatus having a reduced thickness | Physics | 3 | Expired |
| US7775925B2 | Oil-free chain | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US9031640B2 | Laser doppler blood flow measuring method and device | Human Necessities | 2 | Active |
| US6483783B1 | Magneto-optical disk apparatus capable of accurately enlarging and reproducing a magnetic domain and method of reproducing the same | Physics | 2 | Expired |
| US7280446B2 | Optical disk drive responsive to internal temperature change | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.