Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7301889 | Optical disc | — | 2007-11-27 |
| 7227675 | Hologram recording medium, recording/reproducing apparatus and method therefor | Yoshitaka Takahashi | 2007-06-05 |
| 6775222 | Optical disc | — | 2004-08-10 |
| 6507558 | Optical disc having format suitable for large amount of data and method of making the same | — | 2003-01-14 |
| 6298021 | Optical disc and optical disc apparatus for forming wobbled tracks | — | 2001-10-02 |
| 6201773 | Optical disc and optical disc apparatus for forming wobbled tracks | — | 2001-03-13 |
| 5999504 | Optical disc and optical disc apparatus for forming wobbled tracks | — | 1999-12-07 |
| 5956313 | Phase-change optical disc recording method and apparatus, and information recording apparatus and recording pre-compensation method | Hiroshi Maegawa | 1999-09-21 |
| 5917009 | Aliphatic polyamine and method of producing the same | Hiroki Oosedo, Shinji Kouchi | 1999-06-29 |
| 5745463 | Phase-change optical disc recording method and apparatus, and information recording apparatus and recording pre-compensation method | Hiroshi Maegawa | 1998-04-28 |
| 5732062 | Information recording apparatus, method and computer program product | Kenya Yokoi | 1998-03-24 |
| 5712839 | Laser light power control system having reflected light detector | — | 1998-01-27 |
| 5648952 | Phase-change optical disc recording method and apparatus, and information recording apparatus and recording pre-compensation method | Hiroshi Maegawa | 1997-07-15 |
| 5602823 | Optical recording medium having pre-formatted patterns arrange by shifting phases | Yoshitaka Takahashi, Hiroshi Maegawa | 1997-02-11 |
| 5574713 | Method for controlling an optical recording device for improved recording mark detection | — | 1996-11-12 |
| 5572506 | Optical information recording medium with gap area capable for preformatting with a specified pattern | — | 1996-11-05 |
| 5414692 | Optical information recording medium | — | 1995-05-09 |
| 5386996 | Golf club head | Masaomi Hiruta, Ryohei Uji, Hirato Shimasaki, Hiroshi Ezaki, Hideyuki Ishii +1 more | 1995-02-07 |
| 5218589 | Defect detecting method | — | 1993-06-08 |
| 5195076 | Defect detection circuit for optical pick up device | — | 1993-03-16 |