Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10130978 | Cleaning method of oil tank and cleaning device of same | Guiqing Xu, Masayuki Kidokoro, Yasuo Uchida, Masanao Kato, Masanao Mitsuhata +3 more | 2018-11-20 |
| 9586189 | Catalyst loading device and catalyst loading method | Masanao Kato, Yasuo Uchida | 2017-03-07 |
| 7959870 | Separator and unloading device | Tomokazu Yanokuchi, Keiichi Yamaguchi, Masayuki Kidokoro | 2011-06-14 |
| 7112311 | Cooling method of hydrotreating plant and cooling unit therefor | Yuji Yoshizumi, Hidekatsu Honda, Masayuki Shoji, Toshihiko Nasu, Junichi Takano | 2006-09-26 |
| 6814945 | Dumping device of catalyst inside reactor and dumping method using the same | Nobuyoshi Sawamura, Shinichi Nagata | 2004-11-09 |
| 6273102 | Method of cleaning and maintaining petroleum refining plants | Junichi Takano, Guiqing Xu | 2001-08-14 |
| 6203766 | Dumping device of catalyst inside reactor and dumping method using the same | Nobuyoshi Sawamura, Shinichi Nagata | 2001-03-20 |
| 5736108 | Refrigerant unit in hydrogen treating plant | Junichi Takano, Nobuyoshi Sawamura | 1998-04-07 |
| 5413629 | Laser marking and printing ink therefor | Toshihiko Yasui, Yoshio Takimoto, Toshiyuki Kiyonari, Norio Endo | 1995-05-09 |
| 4912071 | Method of unloading catalyst | Toyoo Kaijima, Tomiyasu Hirachi, Junichi Takano | 1990-03-27 |
| 4268414 | Method for removing and treating waste catalyst | Kenji Komori, Hiroshi Megumi | 1981-05-19 |