Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE44414 | Hard coating film and method for forming the same | Kenji Yamamoto | 2013-08-06 |
| 8197647 | Hard laminated film, method of manufacturing the same and film-forming device | Kenji Yamamoto, Kazuki Takahara, Hirofumi Fujii | 2012-06-12 |
| 8025958 | Material with hard coating film formed on substrate surface thereof | Kenji Yamamoto | 2011-09-27 |
| 7763366 | Hard coating film and method for forming the same | Kenji Yamamoto | 2010-07-27 |
| 7695829 | Hard film and hard film-coated tool | Kenji Yamamoto | 2010-04-13 |
| 7258912 | Hard laminated film, method of manufacturing the same and film-forming device | Kenji Yamamoto, Kazuki Takahara, Hirofumi Fujii | 2007-08-21 |