Issued Patents All Time
Showing 1–25 of 107 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6376057 | Packaging material for photographic photosensitive material | Mutsuo Akao, Hideyuki Sugimoto | 2002-04-23 |
| 6012969 | Abrasive member for very high return loss optical connector ferrules | Katsumi Ryoke, Tadashi Ishiguro | 2000-01-11 |
| 5711772 | Abrasive member | Katsumi Ryoke | 1998-01-27 |
| 5695386 | Cleaning method using abrasive tape | Katsumi Ryoke, Keisuke Yamada | 1997-12-09 |
| 5639284 | Abrasive member | Katsumi Ryoke, Tadashi Ishiguro | 1997-06-17 |
| 5633068 | Abrasive tape having an interlayer for magnetic head cleaning and polishing | Katsumi Ryoke, Keisuke Yamada | 1997-05-27 |
| 5632789 | Abrasive tape | Katsumi Ryoke, Kazuko Hanai | 1997-05-27 |
| 5611826 | Abrasive tape | Katsumi Ryoke, Masami Sato | 1997-03-18 |
| 5573444 | Polishing method | Katsumi Ryoke, Keisuke Yamada | 1996-11-12 |
| 5456734 | Abrasive member | Katsumi Ryoke, Masami Sato | 1995-10-10 |
| 5366525 | Manufacture of abrasive tape | — | 1994-11-22 |
| 5300244 | Method of preparing magnetic coating composition | Chiaki Mizuno, Masatoshi Kiyama, Takao Komi, Hiroshi Ogawa, Shinichi Funabashi | 1994-04-05 |
| 5089330 | Abrasive tape in which a single compound serves to improve dispersion of abrasive particles and also as antistatic and lubricant for the tape | Masami Sato, Yasuo Nishikawa, Takashi Iwasaki | 1992-02-18 |
| 5075180 | Magnetic recording medium and method for preparing the same | Tadashi Ishikuro, Shinobu Iida | 1991-12-24 |
| 5039554 | Process for preparing a backing layer of a magnetic recording medium which includes the predispersing of a fine .alpha.-Al.sub.2 O.sub.3 powder in a solvent containing a small amount of binder | Tadashi Ishikuro, Hideaki Kosha | 1991-08-13 |
| 5036629 | Method for preparing a magnetic recording medium | Tadashi Ishikuro, Shinobu Iida | 1991-08-06 |
| 5023135 | Magnetic recording medium which contains a binder of nitrogen containing vinyl chloride polymer and an amino group containing polyurethane | Kazuo Hasumi, Kouichi Mochizuki | 1991-06-11 |
| 5009929 | Process for the preparation of magnetic recording medium | Shinobu Iida, Keisuke Yamada | 1991-04-23 |
| 5000983 | Process for the preparation of magnetic recording medium | Shinobu Iida, Keisuke Yamada, Hiroshi Kato, Naoki Sakai | 1991-03-19 |
| 4946534 | Process for the preparation of magnetic recording disk | Kunihiko Honda, Tadashi Ishiguro | 1990-08-07 |
| 4937098 | Method for manufacturing a magnetic recording medium | Yasuo Nishikawa, Mikio Ohno, Tsutomu Okita | 1990-06-26 |
| 4922675 | Abrasive tape | Masami Sato, Takashi Iwasaki, Masami Suzuki, Takashi Yoneyama, Hideaki Kosha | 1990-05-08 |
| 4916024 | Magnetic recording medium | Akira Kasuga | 1990-04-10 |
| 4911997 | Magnetic recording medium | Takamitsu Asai | 1990-03-27 |
| 4888212 | Process for the preparation of magnetic recording medium | Shinobu Iida, Shigeo Komine, Keisuke Yamada | 1989-12-19 |