Issued Patents All Time
Showing 1–25 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7085470 | Plastic fiber-optic cable and producing method for the same | Toru Ogura, Yukio Shirokura | 2006-08-01 |
| 6841227 | Image-receiving sheet for electrophotography | Yukio Shirokura | 2005-01-11 |
| 5851744 | Photographic film | Fumiyuki Suzuki, Yukio Shirokura, Takanori Sato, Hiroko Sugihara | 1998-12-22 |
| 5584953 | Method of manufacturing a photographic printing paper support | Yasuo Nishikawa, Sugihiko Tada | 1996-12-17 |
| 5466519 | Support for a photographic printing paper and a manufacturing process therefor | Yuji Shirakura, Hisamasa Abe, Teruo Yamashita, Tatsuo Shimizu, Sei Kawahara +1 more | 1995-11-14 |
| 5366854 | Photographic printing paper support | Yasuo Nishikawa, Takanori Sato, Sugihiko Tada | 1994-11-22 |
| 5312682 | Photographic printing paper support | Yasuo Nishikawa, Sugihiko Tada | 1994-05-17 |
| 5274623 | Information recording medium having high modulation degree | Yoshihisa Usami, Mitsuru Sawano | 1993-12-28 |
| 5034271 | Magnetic recording medium | Hiroo Inaba, Kazuko Hanai, Yasuyuki Yamada | 1991-07-23 |
| 4995199 | Magnetic tape cassette having improved guide pole structure | Minoru Kanazawa, Tsutomu Sugisaki, Takuzi Yamada, Yasutoshi Okuzawa | 1991-02-26 |
| 4993197 | Magnetic tape cassette having improved guide pole structure | Minoru Kanazawa, Tsutomu Sugisaki, Takuzi Yamada, Yasutoshi Okuzawa | 1991-02-19 |
| 4952458 | Magnetic recording medium | Akihiro Matsufuji, Nobuyuki Yamamoto | 1990-08-28 |
| 4930032 | Magnetic tape cassette having improved guide pole structure | Minoru Kanazawa, Tsutomu Sugisaki, Takuzi Yamada, Yasutoshi Okuzawa | 1990-05-29 |
| 4859500 | Method for preparing a magnetic recording medium | Takeshi Kakuta | 1989-08-22 |
| 4822672 | Abasive tape | Nobutaka Yamaguchi, Eiichi Tadokoro | 1989-04-18 |
| 4812369 | Magnetic recording medium | Kazuko Hanai, Yasuyuki Yamada | 1989-03-14 |
| 4786557 | Magnetic recording medium of continuous form | Yutaka Kakuishi, Masatoshi Takahashi | 1988-11-22 |
| 4766511 | Anti-static surface for magnetic tape cartridge | Masaaki Fujiyama | 1988-08-23 |
| 4745017 | Magnetic recording medium | Masahiro Utumi, Kenichi Masuyama, Toshimitu Okutu, Masaaki Fujiyama | 1988-05-17 |
| 4745001 | Process for the preparation of magnetic recording medium | Masaaki Fujiyama | 1988-05-17 |
| 4743500 | Magnetic recording medium | Masaaki Fujiyama | 1988-05-10 |
| 4740418 | Magnetic recording medium | Hideaki Kosha | 1988-04-26 |
| 4726992 | Magnetic recording medium | Takamitsu Asai, Masaaki Fujiyama, Yasuyuki Yamada | 1988-02-23 |
| 4701364 | Tape for cleaning magnetic head | Akira Kasuga, Masaaki Fujiyama | 1987-10-20 |
| 4696859 | Magnetic recording medium | Nobuo Aoki, Takashi Yoneyama, Akira Kasuga, Toshimitu Okutu, Masaaki Fujiyama +1 more | 1987-09-29 |