Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8623503 | Chromium-free rust-inhibitive surface treatment agent for metal parts with zinc surfaces and metal parts with zinc surfaces coated with rust-inhibitive surface coated film | Yasuhiko Endo, Hideaki Nogami, Shunjiro Watanabe, Yukiyasu Kang | 2014-01-07 |
| 8367201 | Chromium-free rust-inhibitive surface treatment agent for metal parts with zinc surfaces and metal parts with zinc surfaces coated with rust-inhibitive surface coated film | Yasuhiko Endo, Hideaki Nogami, Shunjiro Watanabe, Yukiyasu Kang | 2013-02-05 |
| 7588801 | Chromium-free rust inhibitive treatment method for metal products having zinc surface and metal products treated thereby | Yasuhiko Endo, Kengo Takase, Shunjiro Watanabe | 2009-09-15 |