Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5565278 | Magneto-optical recording medium | Masahiro Birukawa, Motoyoshi Murakami | 1996-10-15 |
| 5518826 | Magneto-optical recording medium and method of manufacturing same | Yoshihiko Kudoh, Motoyoshi Murakami | 1996-05-21 |
| 5517472 | Magnetic-field generator for use in a magneto-optical disk unit | Norio Miyatake, Kiyoshi Uchida, Yasumori Hino, Teruyuki Takizawa, Tohru Nakamura | 1996-05-14 |
| 5202863 | Magneto-optical disk unit compatible with different two types of magneto-optical disks and a magnetic-field generator suitable thereof | Norio Miyatake, Kiyoshi Uchida, Yasumori Hino, Teruyuki Takizawa, Tohru Nakamura | 1993-04-13 |
| 4952295 | Method of producing a deposition film of composite material | Yoshihiko Kudoh, Motoyoshi Murakami, Norio Miyatake, Masakazu Yamamoto | 1990-08-28 |
| 4497870 | Magneto-optical recording medium | Yoshihiko Kudo, Masahiro Birukawa, Noriaki Hara, Akira Muto | 1985-02-05 |
| 4470479 | Method of making metal coated foil speaker diaphragm | Hideaki Inoue, Hiroshi Takeuchi, Keizo Ishiwatari | 1984-09-11 |
| 4251297 | Method for manufacturing magnetic head using boronizing treatment | Yuji Nagata, Keizo Ishiwatari, Toshio Shimizu | 1981-02-17 |
| 4216271 | Composite diaphragm for speaker | Hiroshi Takeuchi, Hideaki Inoue, Keizo Ishiwatari | 1980-08-05 |