Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11191399 | Toilet seat | Takeshi Hayashida, Nobuhiko Umeda, Shuhei Nishiyama, Minoru Sato | 2021-12-07 |
| 11033159 | Toilet seat | Takeshi Hayashida, Nobuhiko Umeda, Shuhei Nishiyama, Minoru Sato | 2021-06-15 |
| 10874267 | Toilet seat | Takeshi Hayashida, Nobuhiko Umeda, Shuhei Nishiyama, Minoru Sato | 2020-12-29 |
| 10682026 | Toilet seat | Takeshi Hayashida, Shuhei Nishiyama, Nobuhiko Umeda | 2020-06-16 |
| 6907126 | Encryption-decryption apparatus | — | 2005-06-14 |
| 6067838 | Method of forging rod-shaped work | Teruki Kameda | 2000-05-30 |
| 5895324 | Process for forming axially-extendable bolt by upsetting | — | 1999-04-20 |
| 5795234 | Process for forming bolt | Munechika Nakane | 1998-08-18 |
| 5706697 | Process of and apparatus for ironing work for bolt and the same work for bolt | — | 1998-01-13 |