Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6821618 | Magnetic recording medium and process for producing the same | Jun Koujima, Teruaki Santoki, Kenichi Nakata, Takanori Doi, Masaaki Maekawa | 2004-11-23 |
| 6753077 | Magnetic recording medium and process for producing the same | Kenichi Nakata, Jun Koujima, Teruaki Santoki | 2004-06-22 |
| 6268024 | Process for producing magnetic recording medium | Takanori Doi, Yasuo Kakihara, Kenichi Nakata, Mitsuru Matsuura, Setsuo Yamamoto | 2001-07-31 |
| 6221519 | Magnetic recording medium and process for producing the same | Takanori Doi, Yasuo Kakihara, Kenichi Nakata, Mitsuru Matsuura, Setsuo Yamamoto | 2001-04-24 |
| 6187462 | Magnetic recording medium and process for producing the same | Takanori Doi, Yasuo Kakihara, Kenichi Nakata, Mitsuru Matsuura, Setsuo Yamamoto | 2001-02-13 |
| 6165608 | Magnetic recording medium | Takanori Doi, Yasuo Kakihara, Kenichi Nakata | 2000-12-26 |
| 6159594 | Magnetic recording medium | Takanori Doi, Yasuo Kakihara, Kenichi Nakata | 2000-12-12 |
| 5851582 | Magnetic recording medium and process for producing the same | Takanori Doi | 1998-12-22 |
| 5628953 | Process for producing perpendicular magnetic film | — | 1997-05-13 |
| 5601904 | Magnetic recording medium and process for producing the same | Takanori Doi | 1997-02-11 |
| 5589261 | Perpendicular magnetic film, process for producing the same and magnetic recording medium having the same | — | 1996-12-31 |
| 5580671 | Perpendicular magnetic film and multi-layered film for perpendicular magnetic film | Takanori Doi | 1996-12-03 |
| 5496631 | Perpendicular magnetic film, multilayered film for perpendicular magnetic film and process for producing perpendicular magnetic film | — | 1996-03-05 |
| 5238483 | Acicular magnetic iron based alloy particles for magnetic recording and method of producing the same | Akio Mishima, Mamoru Tanihara, Yasutaka Ota, Hirofumi Kawasaki, Kenji Okinaka +3 more | 1993-08-24 |
| 5156922 | Acicular magnetic iron based alloy particles for magnetic recording and method of producing the same | Akio Mishima, Mamoru Tanihara, Yasutaka Ota, Hirofumi Kawasaki, Kenji Okinaka +3 more | 1992-10-20 |
| 5009712 | Non-magnetic pigments | Tsutomu Katamoto | 1991-04-23 |