Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7208229 | Modified metal oxide sol, coating compositions and optical element | Keitaro Suzuki, Yoshinari Koyama | 2007-04-24 |
| 6626987 | Modified metal oxide sol, coating composition and optical element | Keitaro Suzuki, Yoshinari Koyama | 2003-09-30 |
| 6355694 | Modified stannic oxide—zirconium oxide complex sol and preparation method thereof | Keitaro Suzuki, Yoshinari Koyama | 2002-03-12 |
| 6306513 | Optical element having cured film | Takanobu Itoh, Keitaro Suzuki, Yoshinari Koyama | 2001-10-23 |
| 6296943 | Method for producing composite sol, coating composition, and optical element | Yoshitane Watanabe, Keitaro Suzuki, Yoshinari Koyama | 2001-10-02 |
| 6136973 | Melamine-melam-melem salt of a polyphosphoric acid and process for its production | Keitaro Suzuki, Masuo Shindo | 2000-10-24 |
| 6121445 | 1,3,5-triazine derivative salts of polyacids comprising phosphorus, sulfur, and oxygen and process for producing the same | Keitaro Suzuki, Masuo Shindo | 2000-09-19 |
| 6040372 | Hydrated zinc stannate sols, coating compositions and optical elements | Yoshitane Watanabe, Keitaro Suzuki, Yoshinari Koyama | 2000-03-21 |
| 6001164 | Hydrated zinc stannate sols, coating compositions and optical elements | Yoshitane Watanabe, Keitaro Suzuki, Yoshinari Koyama | 1999-12-14 |
| 5891362 | Hydrated zinc stannate sols, coating compositions and optical elements | Yoshitane Watanabe, Keitaro Suzuki, Yoshinari Koyama | 1999-04-06 |
| 5891565 | Sol and fine powder of sodium magnesium fluoride and processes for their production | Yoshitane Watanabe, Keitaro Suzuki, Yoshinari Koyama | 1999-04-06 |
| 5861112 | Electro-conductive oxide particle and processes for its production | Yoshitane Watanabe, Keitaro Suzuki | 1999-01-19 |
| 5756009 | Process for the production of an electro-conductive oxide particle | Yoshitane Watanabe, Keitaro Suzuki | 1998-05-26 |
| 5667725 | Sol and fine powder of sodium magnesium fluoride and processes for their production | Yoshitane Watanabe, Keitaro Suzuki, Yoshinari Koyama | 1997-09-16 |
| 5582909 | Electro-conductive oxide particle and processes for its production | Yoshitane Watanabe, Keitaro Suzuki | 1996-12-10 |
| 5552083 | Sol and fine powder of sodium magnesium fluoride and processes for their production | Yoshitane Watanabe, Keitaro Suzuki, Yoshinari Koyama | 1996-09-03 |