Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11261968 | Sealing device for differential mechanism | Kokichi Hamamoto, Masayuki Tanida, Takehiro Nakagawa | 2022-03-01 |
| D865134 | Seal | Kokichi Hamamoto, Masayuki Tanida, Takehiro Nakagawa | 2019-10-29 |
| 10208861 | Sealing device | Kokichi Hamamoto, Takehiro Nakagawa, Shiho Sato | 2019-02-19 |
| D802104 | Seal | Kokichi Hamamoto, Masayuki Tanida, Takehiro Nakagawa | 2017-11-07 |