Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659171 | Hydrophilic modification method and heat exchanger treated thereby | Susumu Maekawa, Akira Ushio, Koichi Saito, Norizumi Matsui, Osamu Kasebe +3 more | 2003-12-09 |
| 6554916 | Treatment method for making heat exchanger hydrophilic and heat exchanger treated to be hydrophilic | Masahiro Kojima, Takashi Sudo, Shintaro Nakagawa, Masahiko Matsukawa, Tatsuo Yoshida | 2003-04-29 |
| 6528468 | Pickling agent for the chemical conversion coating of heat exchanger, method of pickling heat exchanger | Masahiko Matsukawa, Kentaro Saito, Kasuyoshi Yamasoe | 2003-03-04 |
| 6419731 | Nonchromate rust preventive agent for aluminum, method of rust prevention and rust-preventive aluminum products | Masashi Takahashi, Katsuyoshi Yamasoe | 2002-07-16 |
| 6083896 | Aqueous cleaning solution and method for cleaning aluminum-based metals | Shinji Sasakuma, Yasutake Mino, Satoshi Ikeda | 2000-07-04 |