Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5176159 | Lens case for contact lens cleaning device | Tomio Oguma, Masasi Kai | 1993-01-05 |
| 5161559 | Cleaning device for contact lenses | Masasi Kai, Tomio Oguma, Yasuhiro Aso | 1992-11-10 |
| 5105841 | Cleaning device for contact lenses | Tomio Oguma, Masasi Kai, Yasuhiro Aso | 1992-04-21 |
| 4829606 | Washing device for parts of human body | Yuji Hirashiba | 1989-05-16 |
| 4446584 | Heated toilet seat | Koichi Suzuki, Shinji Kawai, Katsuhiro Mori | 1984-05-08 |