Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7615201 | Spherical particles of silica-containing compound oxide and method of production | Koichiro Watanabe, Susumu Ueno | 2009-11-10 |
| 7332144 | Hydrophobic silica fine powder and making method | Koichiro Watanabe, Susumu Ueno | 2008-02-19 |
| 6797447 | Electrostatic image developer | Koichiro Watanabe, Susumu Ueno | 2004-09-28 |
| 6777152 | Electrostatic image developer | Koichiro Watanabe, Susumu Ueno | 2004-08-17 |
| 6551567 | Spherical silica particles and method of production | Koichiro Watanabe, Susumu Ueno | 2003-04-22 |
| 6387302 | Method of producing spherical silica powder | Koichiro Watanabe, Susumu Ueno | 2002-05-14 |
| 6031026 | Process for the continuous production of RTV silicone rubber compositions | Yuki Tateyama, Takao Kanaya | 2000-02-29 |
| 5817285 | Continuous preparation of silicon nitride powder | Hirofumi Fukuoka, Masanori Fukuhira | 1998-10-06 |
| 5573689 | Fluidized bed reactor for preparing metal nitride | Hirofumi Fukuoka, Masanori Fukuhira, Ichiro Ishizaka | 1996-11-12 |
| 5456896 | Preparation of high alpha-type silicon nitride powder | Hirofumi Fukuoka, Masaki Watanabe, Masanori Fukuhira | 1995-10-10 |
| 5441694 | Preparation of high .alpha.-type silicon nitride powder | Masanori Fukuhira, Hirofumi Fukuoka, Masaki Watanabe | 1995-08-15 |
| 4650511 | Method for the preparation of a dehydrated quartz glass material for light transmission | Kazuo Koya | 1987-03-17 |