Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11987068 | Marking pen | Yusuke Kobayashi, Toru Nakajima, Akiko HIRAYAMA | 2024-05-21 |
| 6961252 | Switching power supply | — | 2005-11-01 |
| 6917527 | Switching power supply | — | 2005-07-12 |
| 6863452 | Optical link device | — | 2005-03-08 |
| 6466462 | DC/DC converter having a control circuit to reduce losses at light loads | Tomohiro Nishiyama, Yoshinao Naito, Masuo Hanawaka | 2002-10-15 |
| 6282103 | Switching power supply using an inductor device to prevent harmonic current generation | Yoshinao Naito, Maki Ota, Masaki Hashimoto, Kazunori Yasuda | 2001-08-28 |
| 5387026 | Support structure for acoustic oscillation transferring device | Kazuhiro Matsuhashi, Yoshikazu Okamoto | 1995-02-07 |
| 5378453 | Composition for preventing graying of the hair and restoring grayed hair to its natural color | Keikichi Sugiyama, Ikuo Yamamoto | 1995-01-03 |
| 5376643 | Composition for application to hair | Keikichi Sugiyama, Ikuo Yamamoto | 1994-12-27 |
| 5318776 | Composition for preventing graying of the hair | Keikichi Sugiyama, Ikuo Yamamoto | 1994-06-07 |
| 5017368 | Composition for application to hair or scalp | Keikichi Sugiyama, Akira Fukushima, Makoto EGAWA | 1991-05-21 |
| 4917778 | Process for the corrosion protection of neodymium-iron-boron group sintered magnets | Yutaro Etizen | 1990-04-17 |
| 4892627 | Method of nickel-tungsten-silicon carbide composite plating | — | 1990-01-09 |
| 4859291 | Method of performing industrial low hydrogen embrittlement nickel plating by use of an insoluble anode | Masaya Miyata, Isojiro Tamura | 1989-08-22 |
| 4847511 | Device for measuring rectilinear motion | Kenji Magara, Yuzuru Nishiyama | 1989-07-11 |