Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6089621 | Pipe joint made of resin | — | 2000-07-18 |
| 6045164 | Pipe joint made of resin | — | 2000-04-04 |
| 6024345 | Resin-made spring and a bellows type constant volume pump using the same | — | 2000-02-15 |
| 5828170 | Fluorescent lamp unit and lighting apparatus having the fluorescent lamp unit | Kazuhisa Ogishi, Takeo Yasuda, Toshiya Tanaka | 1998-10-27 |
| 5743572 | Pipe joint made of resin | — | 1998-04-28 |
| 5553900 | Pipe joint structure for fluid device | Toshiyuki Fukumoto | 1996-09-10 |
| 5516159 | Quartz pipe joint | Nobuhito Hirakawa | 1996-05-14 |
| 5203062 | Insertion apparatus for pressing a ring into a pipe | — | 1993-04-20 |
| 5154453 | Pipe joint made of resin | — | 1992-10-13 |
| 5035087 | Surface grinding machine | Masanori Nishiguchi, Takeshi Sekiguchi, Ikkei Miyoshi | 1991-07-30 |
| 4782631 | Double-end surface grinding machine | — | 1988-11-08 |
| 4726150 | Face grinder | Arihisa Tanaka | 1988-02-23 |