Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660924 | Vacuum heat insulator | Masayoshi Aoki, Hiroshi Yamasaki, Shigeru Tanaka, Masahisa Ochi | 1997-08-26 |
| 4417754 | Pipe joint for preventing separation | Toshi Nakajima, Takeshi Kashi | 1983-11-29 |
| 4183561 | Separation-prevented pipe joint which can be assembled from inside pipe | Hiroshi Miyamoto, Toshi Nakajima, Takao Sagara | 1980-01-15 |