Hiroshi Yasuoka
11Patents
7h-index
34Co-inventors
66Inventor score
Filing activity: Jan 22, 1988 → Apr 4, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4984231A | Optical information phase change recording medium having double protective layer | Emerging Cross-Sectional Technologies | 31 | Expired |
| US5235591A | Stack type optical disc apparatus, sealed and separate type optical head therefor and optical disc medium | Physics | 21 | Expired |
| US5574881A | High capacity data storage method and system using independently controlled heads and circuitry for monitoring access frequency of data records | Physics | 18 | Expired |
| US5109374A | Small-sized optical memory device and information processing apparatus utilizing cylindrically shaped information recording medium | Physics | 14 | Expired |
| US5257256A | Recording waveform for mark-length modulation optical recording | Physics | 13 | Expired |
| US5038338A | Recording waveform for mark-length modulation optical recording | Physics | 9 | Expired |
| US5404348A | Method for recording and reproducing information using at least two energy beams | Physics | 7 | Expired |
| US5084857A | Information recording method using a modulated recording beam at high, intermediate and low power levels | Physics | 7 | Expired |
| US4982396A | Information recording medium and apparatus using reversible phase change | Physics | 4 | Expired |
| US8128731B2 | Method for separating and enriching isotope material, multistage rotor, and apparatus for separating and enriching isotope material | Emerging Cross-Sectional Technologies | 0 | Active |
| US7282610B2 | Method of producing aromatic amine compound having alkylthio group | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.