Emiko Hamada
28Patents
12h-index
14Co-inventors
74Inventor score
Filing activity: Apr 14, 1989 → Jul 18, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5090009A | Optical information recording medium | Physics | 60 | Expired |
| US4940618A | Optical information recording medium | Emerging Cross-Sectional Technologies | 59 | Expired |
| US5398231A | Optical information recording substrate and method of making thereof | Emerging Cross-Sectional Technologies | 56 | Expired |
| US5080946A | Optical information recording medium and recording method | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4990388A | Optical information recording medium | Emerging Cross-Sectional Technologies | 35 | Expired |
| US5498509A | Method of making an optical information recording substrate | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5009818A | Method of manufacturing an optical information recorded disc | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5155723A | Optical information recording method and medium | Physics | 21 | Expired |
| US4920359A | Optical information recording medium having protective layer | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5213955A | Optical information recording medium and recording method | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5976658A | Optical information recording medium | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5318882A | Optical recording medium containing a light stabilizer comprised of aryl nitrogen compound | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5407719A | Optical information recording medium and recording method | Emerging Cross-Sectional Technologies | 11 | Expired |
| US7194751B2 | Optical information medium | Physics | 8 | Expired |
| US6168844A | Optical information recording medium | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6452899B1 | Optical information medium and recording method therefor | Physics | 7 | Expired |
| US6445676B1 | Optical information medium | Physics | 7 | Expired |
| US6504815B1 | Optical information medium, stamper for manufacturing transparent substrate therefor and recording method therefor | Physics | 6 | Expired |
| US6287662A | Optical data recording medium | Physics | 6 | Expired |
| US6711118B1 | Optical information recording medium for recording optically reproducible signals thereon through the use of a recording laser beam and method for recording optical information thereon | Physics | 5 | Expired |
| US6291045A | Optical information recording medium | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6156482A | Optical information recording medium and recording method | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6493312B1 | Optical information medium | Physics | 3 | Expired |
| US6721265B1 | High-density optical information recording medium and a substrate and a stamper for the manufacture thereof | Physics | 3 | Expired |
| US6728198B2 | Optical information medium and recording method therefor | Physics | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.