Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12104231 | Steel material and steel product using the same | — | 2024-10-01 |
| 11913100 | Steel for a mold | — | 2024-02-27 |
| 11377718 | Steel for mold | — | 2022-07-05 |
| 11319621 | Steel for mold, and mold | — | 2022-05-03 |
| 11141778 | Steel for molds and molding tool | — | 2021-10-12 |
| 11091825 | Prehardened steel material, mold, and mold component | — | 2021-08-17 |
| 10988823 | Annealed steel material and method for manufacturing the same | — | 2021-04-27 |
| 10975460 | Steel powder and mold using the same | — | 2021-04-13 |
| 10774406 | Steel for mold and mold | Naoki Umemori, Takayuki Shimizu | 2020-09-15 |
| 10508327 | Mold steel and mold | — | 2019-12-17 |
| 10173258 | Steel for mold, and mold | — | 2019-01-08 |
| 7218985 | Semiconductor manufacturing apparatus | Hidemitsu Naya, Koji Hashimoto, Rikio Tomiyoshi | 2007-05-15 |
| 7027888 | Semiconductor manufacturing apparatus | Hidemitsu Naya, Koji Hashimoto, Rikio Tomiyoshi | 2006-04-11 |
| 6941186 | Semiconductor manufacturing apparatus | Hidemitsu Naya, Koji Hashimoto, Rikio Tomiyoshi | 2005-09-06 |
| 6478900 | Method of forging precipitation hardening type stainless steel | Sachihiro Isogawa, Katsuyoshi Sakoda | 2002-11-12 |
| 5424550 | Charged particle beam exposure apparatus | Masahide Okumura, Haruo Yoda, Yukinobu Shibata, Tadao Konishi | 1995-06-13 |
| 5281827 | Charged particle beam exposure apparatus | Masahide Okumura, Haruo Yoda, Yukinobu Shibata, Tadao Konishi | 1994-01-25 |