Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10305685 | Communications system and communications method | Tsutomu Kawase, Masahiko Itoh, Tadanori Ryu, Kei Inaba | 2019-05-28 |
| 10243676 | Information distribution system | Yasuyuki Nakamura, Tsutomu Kawase, Michiaki Shinotsuka | 2019-03-26 |
| 8104881 | Ink cartridge, ink cartridge bag, and inkjet recording apparatus | — | 2012-01-31 |
| 4666113 | Device for mounting cooking apparatus | Tatumi Usagawa, Ryo Sakai, Yasakao Yamamoto | 1987-05-19 |
| 4635615 | Device for mounting cooking apparatus | Tatumi Usagawa, Ryo Sakai, Yasakao Yamamoto | 1987-01-13 |