Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8557330 | Manufacturing method of soft magnetic material and manufacturing method of dust core | Toru Maeda, Naoto Igarashi, Haruhisa Toyoda, Hiroko Morii, Kazuyuki Hayashi | 2013-10-15 |
| 8323725 | Soft magnetic material, powder magnetic core and method of manufacturing soft magnetic material | Toru Maeda, Naoto Igarashi, Haruhisa Toyoda, Hirokazu Kugai, Kazuyuki Hayashi +1 more | 2012-12-04 |
| 8153256 | Soft magnetic material comprising an insulating layer containing aluminum, silicon, phosphorous and oxygen; dust magnetic core; process for producing soft magnetic material; and process for producing dust magnetic core | Toru Maeda, Naoto Igarashi, Haruhisa Toyoda, Hiroko Morii, Kazuyuki Hayashi | 2012-04-10 |
| 7767034 | Soft magnetic material, powder magnetic core and method of manufacturing soft magnetic material | Toru Maeda, Naoto Igarashi, Haruhisa Toyoda, Hirokazu Kugai, Kazuyuki Hayashi +1 more | 2010-08-03 |
| 6723456 | Hematite particles aggregates, non-magnetic undercoatt layer for magnetic recording medium using the same, and magnetic recording medium having the non-magnetic undercoat layer | Kazuyuki Hayashi, Keisuke Iwasaki, Hiroko Morii | 2004-04-20 |
| 6689452 | Magnetic recording medium | Mamoru Kamigaki, Hiroko Morii | 2004-02-10 |
| 6638675 | Black magnetic toner | Kazuyuki Hayashi, Hiroko Morii, Yasuyuki Tanaka | 2003-10-28 |
| 6562532 | Black magnetic toner and black magnetic composite particles therefor | Kazuyuki Hayashi, Hiroko Morii, Yasuyuki Tanaka | 2003-05-13 |
| 6458453 | Magnetic recording medium | Kazuyuki Hayashi, Hiroko Morii, Mamoru Kamigaki | 2002-10-01 |
| 6416864 | Black magnetic composite particles for a black magnetic toner | Kazuyuki Hayashi, Hiroko Morii, Yasuyuki Tanaka | 2002-07-09 |
| 6379855 | Black magnetic toner and black magnetic composite particles therefor | Kazuyuki Hayashi, Hiroko Morii, Yasuyuki Tanaka | 2002-04-30 |
| 6251555 | Black magnetic composite particles for black magnetic toner and black magnetic toner using the same | Kazuyuki Hayashi, Yasuyuki Tanaka, Hiroko Morii | 2001-06-26 |
| 6130017 | Black non-magnetic composite particles for black toner and black toner using the same | Kazuyuki Hayashi, Yasuyuki Tanaka, Hiroko Morii | 2000-10-10 |