Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5033671 | Hot-water and cold-water mixing device | Fumikazu Shiba, Yasukiyo Ueda, Hiroaki Yonekubo, Yukio Nagaoka | 1991-07-23 |
| 4909435 | Hot water supply system | Hiroaki Yonekubo | 1990-03-20 |
| 4896658 | Hot water supply system | Hiroaki Yonekubo, Yasukiyo Ueda, Munehiko Tokumoto | 1990-01-30 |
| 4711392 | Mixing valve apparatus | Hiroaki Yonekubo | 1987-12-08 |