Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10130978 | Cleaning method of oil tank and cleaning device of same | Katsuhiko Kawakami, Masayuki Kidokoro, Yasuo Uchida, Masanao Kato, Masanao Mitsuhata +3 more | 2018-11-20 |
| 6273102 | Method of cleaning and maintaining petroleum refining plants | Katsuhiko Kawakami, Junichi Takano | 2001-08-14 |