Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7567682 | Audio processing apparatus | Yuji Yamada, Kiyofumi Inanaga | 2009-07-28 |
| 6947569 | Audio signal processing device, interface circuit device for angular velocity sensor and signal processing device | Yuji Yamada | 2005-09-20 |
| 6928179 | Audio processing apparatus | Yuji Yamada, Kiyofumi Inanaga | 2005-08-09 |
| 6868161 | Transmitting/receiving device and transmitting/receiving method | Yuji Yamada | 2005-03-15 |
| 6721426 | Speaker device | Yuji Yamada | 2004-04-13 |
| 6254847 | Metal hydroxide solid solution, metal oxide solid solution and processes for their production | Ryuichi Ishibashi, Toshikazu Kodani, Mareshi Takegaki | 2001-07-03 |
| 6108430 | Headphone apparatus | — | 2000-08-22 |
| 5891945 | Magnesium hydroxide solid solutions, their production method and use | Shigeo Miyata, Mitsuru Koresawa, Yasunori Kitano, Toshikazu Kotani, Kiminari Tottotsu | 1999-04-06 |
| 5766568 | Method of producing composite metal hydroxide, composite metal hydroxide obtained thereby and a flame retardant composition obtained thereby and therewith | Toshikazu Kodani, Atsuya Kawase, Takashi Oki | 1998-06-16 |
| 5726231 | Flame retardant polyolefin compound having low smoking and toxicity | Yukihiko Namiki, Yasushi Kato, Misao Hanai, Yasunori Kitano | 1998-03-10 |
| 5654356 | Flame retardant polyolefin compound having low smoking and toxicity | Yukihiko Namiki, Yasushi Kato, Yasunori Kitano, Toshikazu Kotani, Yoshiaki Yokota | 1997-08-05 |