Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12428585 | Coated super-abrasive grains, abrasive grains, and wheel | Akito Ishii, Katsumi Okamura, Masahiro Ohata, Masato Michiuchi, Nobuhide Nakamura +1 more | 2025-09-30 |
| 8882944 | Method for forming rustproof film on PC strand and PC strand | Ryohei Kurosawa, Naoki Matsubara | 2014-11-11 |
| 8833050 | Double rustproof PC strand | Ryohei Kurosawa | 2014-09-16 |
| 8191251 | Method for forming rustproof film on a PC strand | Ryohei Kurosawa | 2012-06-05 |