Hiroshi Kayama
12Patents
3h-index
10Co-inventors
53Inventor score
Filing activity: Jan 5, 1995 → Sep 11, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5963523A | Optical recording medium discriminating apparatus using laser beams of different wavelengths | Physics | 56 | Expired |
| US8075994B2 | Thermal bonding conjugate fiber with excellent bulkiness and softness, and fiber formed article using the same | Emerging Cross-Sectional Technologies | 14 | Active |
| US6496453B2 | Optical pickup | Physics | 13 | Expired |
| US5568690A | Drafting instrument | Performing Operations; Transporting | 1 | Expired |
| US7830761B2 | Optical disk apparatus | Physics | 1 | Active |
| US8305854B2 | Optical disc drive | Physics | 0 | Active |
| US8537650B2 | Optical read/write apparatus | Physics | 0 | Active |
| US8391124B2 | Optical drive | Physics | 0 | Active |
| US8218413B2 | Optical disc drive | Physics | 0 | Active |
| US7660222B2 | Optical disk apparatus and information recording/reproduction method | Physics | 0 | Expired |
| US8238213B2 | Optical disc drive | Physics | 0 | Active |
| US7948839B2 | Optical disk apparatus | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.