Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6699606 | Sanitary ware and process for producing the same | Mitsuyoshi Machida, Koichi Hayashi, Tomoyasu Ichiki, Masaaki Ito, Masami Ando +5 more | 2004-03-02 |
| 6548162 | Sanitary ware and process for producing the same | Mitsuyoshi Machida, Koichi Hayashi, Tomoyasu Ichiki, Masaaki Ito, Masami Ando +5 more | 2003-04-15 |
| 6514622 | Sanitary earthen products | Makoto Hayakawa, Koichi Hayashi, Masami Ando, Masaaki Ito, Tomoyasu Ichiki +1 more | 2003-02-04 |
| 6354901 | Discharge lamp, discharge lamp sealing method, discharge lamp sealing device | Tetsuaki Bundo, Koji Kita, Nobuyuki Yamada, Hiroaki Nagai, Susumu Narita +1 more | 2002-03-12 |
| 5972067 | Gradient function material seal cap for discharge lamp bulb | Koichi Hayashi, Hiroyuki Nagayama | 1999-10-26 |
| 5943546 | Gradient function material | Koichi Hayashi, Hiroyuki Nagayama | 1999-08-24 |
| 5653924 | Methods of manufacturing gradient function material | Koichi Hayashi, Hiroyuki Nagayama | 1997-08-05 |