Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12343778 | Die for ironing working and die module | Takuho KUMAGAI, Kenichi Takao, Masahiro Shimamura, Naoya Matsumoto | 2025-07-01 |
| 12157602 | Aluminum can | Norihisa Hirota, Takuho KUMAGAI, Kenichi Takao | 2024-12-03 |
| 12036597 | Jig for metal plastic working | Takuho KUMAGAI, Tomohiro Ogawa, Naoya Matsumoto, Masahiro Shimamura | 2024-07-16 |
| 11745245 | Metallic worked articles | Takuho KUMAGAI, Naoya Matsumoto, Masahiro Shimamura, Tomohiro Ogawa | 2023-09-05 |
| 11338954 | Aluminum can | Norihisa Hirota, Takuho KUMAGAI, Kenichi Takao | 2022-05-24 |
| 11267033 | Mold and method for manufacturing drawn can | Kenichi Takao, Takuho KUMAGAI | 2022-03-08 |
| 10155293 | Diamond surface polishing method and apparatus for implementing same | Masahiro Shimamura, Kenichi Takao | 2018-12-18 |
| 9149901 | Method of polishing the diamond-surface | Kenichi Takao | 2015-10-06 |