Issued Patents All Time
Showing 25 most recent of 75 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9296901 | Composite particles, and coloring composition and resin composition using the same | Kazuyuki Hayashi, Keisuke Iwasaki | 2016-03-29 |
| 8557330 | Manufacturing method of soft magnetic material and manufacturing method of dust core | Toru Maeda, Naoto Igarashi, Haruhisa Toyoda, Seiji Ishitani, 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 |
| 8303861 | Colored composite microparticles, process for producing the colored composite microparticles, colorant, color filter and ink for ink-jet printing | Shinji Horie, Hirofumi Nishikawa, Kazuyuki Hayashi | 2012-11-06 |
| 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, Seiji Ishitani, Kazuyuki Hayashi | 2012-04-10 |
| 7807733 | Color agent for road marking material and road marking material using the same | Kazuyuki Hayashi, Yusuke Shimohata | 2010-10-05 |
| 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 |
| 7432314 | Functional material, dispersion containing the functional material, and process for producing the functional material | Mamoru Kamigaki, Kazuyuki Hayashi, Toru Iwaki | 2008-10-07 |
| 7259194 | Color agent for road marking material and road marking material using the same | Kazuyuki Hayashi, Yusuke Shimohata | 2007-08-21 |
| 7157025 | Transparent coloring composition and color filter | Kunihiro Ichimura, Kazuyuki Hayashi | 2007-01-02 |
| 7094814 | Coloring composition for color filter containing colorant and color filter using the same | Keisuke Iwasaki, Kazuyuki Hayashi | 2006-08-22 |
| 7025905 | Black composite particles for semiconductor sealing material, and semiconductor sealing material using the same | Yusuke Shimohata, Kazuyuki Hayashi | 2006-04-11 |
| 7022752 | Composite particles, process for producing the same, and pigment, paint and resin composition using the same | Kazuyuki Hayashi, Mineko Ohsugi, Keisuke Iwasaki | 2006-04-04 |
| 6863966 | Black magnetic acicular composite particles for magnetic recording medium and magnetic recording medium using the same | Kazuyuki Hayashi, Mamoru Kamigaki, Yasuyuki Tanaka, Keisuke Iwasaki | 2005-03-08 |
| 6838218 | Black toner | Kazuyuki Hayashi, Keisuke Iwasaki | 2005-01-04 |
| 6824867 | Non-magnetic composite particles, process for producing the same and magnetic recording medium using the same | Kazuyuki Hayashi, Keisuke Iwasaki, Mineko Ohsugi | 2004-11-30 |
| 6803104 | Magnetic recording medium, non-magnetic acicular black iron-based composite particles and process for producing the particles | Kazuyuki Hayashi, Keisuke Iwasaki, Yasuyuki Tanaka | 2004-10-12 |
| 6800684 | Composite particles, and tread rubber composition, paint and resin composition using the same | Kazuyuki Hayashi, Keisuke Iwasaki, Mineko Ohsugi, Yusuke Shimohata | 2004-10-05 |
| 6767611 | Black magnetic acicular containing composite particles magnetic recording medium | Kazuyuki Hayashi, Mamoru Kamigaki, Yasuyuki Tanaka, Keisuke Iwasaki | 2004-07-27 |
| 6737211 | Color toner | Kazuyuki Hayashi, Keisuke Iwasaki | 2004-05-18 |
| 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, Seiji Ishitani | 2004-04-20 |
| 6689452 | Magnetic recording medium | Mamoru Kamigaki, Seiji Ishitani | 2004-02-10 |
| 6666914 | Black colorant for ink-jet printing ink, ink-jet printing ink, and aqueous pigment dispersion containing the black colorant | Kazuyuki Hayashi, Keisuke Iwasaki | 2003-12-23 |
| 6667120 | Magnetic recording medium, non-magnetic acicular composite particles and process for producing the particles | Kazuyuki Hayashi, Keisuke Iwasaki | 2003-12-23 |
| 6638618 | Black composite iron oxide pigment, and paint and resin composition using the same | Kazuyuki Hayashi, Yusuke Shimohata, Mineko Ohsugi | 2003-10-28 |