Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8545713 | Black magnetic iron oxide particles | Ryo Iwai, Nobuya Shimo, Naoki Uchida | 2013-10-01 |
| 7597958 | Black magnetic iron oxide particles having a specific dissolution of sulfur element | Shinji Uemoto, Naoki Uchida, Ryo Iwai, Hiromitsu Misawa, Koso Aoki | 2009-10-06 |
| 7572505 | Black magnetic iron oxide particles having high breakdown voltage | Naoki Uchida, Ryo Iwai, Shinji Uemoto, Koso Aoki, Hiromitsu Misawa | 2009-08-11 |
| 7432314 | Functional material, dispersion containing the functional material, and process for producing the functional material | Hiroko Morii, Kazuyuki Hayashi, Toru Iwaki | 2008-10-07 |
| 6863966 | Black magnetic acicular composite particles for magnetic recording medium and magnetic recording medium using the same | Kazuyuki Hayashi, Hiroko Morii, Yasuyuki Tanaka, Keisuke Iwasaki | 2005-03-08 |
| 6767611 | Black magnetic acicular containing composite particles magnetic recording medium | Kazuyuki Hayashi, Hiroko Morii, Yasuyuki Tanaka, Keisuke Iwasaki | 2004-07-27 |
| 6689452 | Magnetic recording medium | Seiji Ishitani, Hiroko Morii | 2004-02-10 |
| 6569530 | Magnetic recording medium and magnetic composite particles or magnetic recording medium | Kazuyuki Hayashi, Keisuke Iwasaki, Hiroko Morii | 2003-05-27 |
| 6531211 | Black plate-shaped ferrite composite particles with magnet oplumbite structure and magnetic recording medium using the same | Kazuyuki Hayashi, Hiroko Morii, Yasuyuki Tanaka, Keisuke Iwasaki | 2003-03-11 |
| 6511733 | Magnetic recording medium containing specific non-magnetic composite particles of coated hematite particles | Kazuyuki Hayashi, Hiroko Morii | 2003-01-28 |
| 6458453 | Magnetic recording medium | Kazuyuki Hayashi, Hiroko Morii, Seiji Ishitani | 2002-10-01 |
| 6294242 | Magnetic recording medium | Kazuyuki Hayashi, Hiroko Morii, Yasuyuki Tanaka, Keisuke Iwasaki | 2001-09-25 |
| 6019834 | Pigment, process for producing the same and paint using the same | Kazuyuki Hayashi, Mineko Ohsugi, Hiroko Morii | 2000-02-01 |
| 5686012 | Modified particles | Kazuyuki Hayashi, Hiroko Morii, Mineko Sakoda, Minoru Ohsugi | 1997-11-11 |