Issued Patents All Time
Showing 101–113 of 113 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6188649 | Method for reading magnetic super resolution type magneto-optical recording medium | Masahiro Birukawa, Norio Miyatake | 2001-02-13 |
| 6178151 | Optical head having a reproducing optical system and filter formed by light passing therethrough | Norio Miyatake, Masahiro Birukawa, Tadashi Nakamura | 2001-01-23 |
| 5986977 | Method for reading magnetic super resolution type magneto-optical recording medium | Masahiro Birukawa, Norio Miyatake | 1999-11-16 |
| 5821004 | Magneto-optical recording medium and recording and reading out process using the same | Yoshihiko Kudoh, Masahiro Birukawa, Norio Miyatake | 1998-10-13 |
| 5814418 | Magneto-optical recording medium and method for reading out information from the same | Keiji Nishikiori, Masahiro Birukawa | 1998-09-29 |
| 5748592 | Disk drive apparatus and disk storage medium for high density recording | Norio Miyatake, Masahiro Birukawa, Tadashi Nakamura | 1998-05-05 |
| 5724338 | Rewritable disk-shaped optical recording medium | Masahiro Birukawa, Norio Miyatake, Yuuichi Fukamachi, Yoshihiko Kudoh | 1998-03-03 |
| 5517472 | Magnetic-field generator for use in a magneto-optical disk unit | Norio Miyatake, Hidetsugu Kawabata, Kiyoshi Uchida, Teruyuki Takizawa, Tohru Nakamura | 1996-05-14 |
| 5422874 | Optical recording disk, and recording/reading apparatus using same | Masahiro Birukawa, Norio Miyatake, Yuuichi Fukamachi, Yoshihiko Kudoh | 1995-06-06 |
| 5377172 | Modulated magnetic field generation circuit for magneto-optical disks | Norio Miyatake | 1994-12-27 |
| 5341359 | Abnormality detection of a recording medium in a magneto-optical recording system | Masahiro Birukawa, Norio Miyatake | 1994-08-23 |
| 5247495 | Optical magnetic disk with separate regions provided on it | Masahiro Birukawa, Norio Miyatake | 1993-09-21 |
| 5202863 | Magneto-optical disk unit compatible with different two types of magneto-optical disks and a magnetic-field generator suitable thereof | Norio Miyatake, Hidetsugu Kawabata, Kiyoshi Uchida, Teruyuki Takizawa, Tohru Nakamura | 1993-04-13 |