Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10442715 | Chromium-containing water treatment method | Hiroyuki Mitsui, Keisuke Shibayama, Sho Shirai | 2019-10-15 |
| 10351929 | Sulfuric acid adding facility and operation method therefor | Takashi Sakamoto, Masayuki Oku, Hideaki Sato, Sho Shirai | 2019-07-16 |
| 10273558 | Ore slurry pre-treatment method and ore slurry manufacturing method | Hirotaka Higuchi, Go Ohara, Masaki Imamura | 2019-04-30 |
| 10017835 | Method for producing nickel sulfide and hydrometallurgical method for nickel oxide ore | Shinichiro Nakamura, Hiroyuki Mitsui, Keisuke Shibayama | 2018-07-10 |
| 9970077 | Method for adding starting material slurry and sulfuric acid to autoclave in high pressure acid leaching process and autoclave | Satoshi Matsubara, Yoji Kyoda, Takashi Sakamoto, Koichiro Maki, Masaki Kitahara +1 more | 2018-05-15 |
| 9945007 | Dezincification plant, method for operating dezincification plant, and hydrometallurgical method for nickel oxide ore | Hiroyuki Mitsui, Satoshi Matsubara | 2018-04-17 |
| 9896740 | Method for operating flash vessel | Satoshi Matsubara, Yoji Kyoda, Takashi Sakamoto | 2018-02-20 |
| 9752211 | Neutralization method and neutralization plant | Hiroyuki Mitsui, Satoshi Matsubara | 2017-09-05 |
| 9751035 | Operation method for dezincification plant | Hiroyuki Mitsui, Satoshi Matsubara | 2017-09-05 |
| 9751783 | Method for a treatment for wastewater containing aluminum, magnesium, and manganese | Hiroshi Kobayashi, Tatsuya Higaki, Hirofumi Shoji, Norihisa Toki, Keiji Kudo +1 more | 2017-09-05 |
| 9732400 | Autoclave apparatus used during high-pressure acid leaching process | Satoshi Matsubara, Yoji Kyoda, Takashi Sakamoto, Haruo Ishikawa, Koichiro Maki | 2017-08-15 |
| 9731980 | Processing device and processing method for hydrogen-sulphide-containing barren solution | Takayuki Nakai, Satoshi Matsubara, Yoji Kyoda | 2017-08-15 |
| 9719153 | Method for shortening operation shutdown time of high pressure acid leach equipment in a hydrometallurgical process | Keisuke Shibayama, Yoshitomo Ozaki | 2017-08-01 |
| 9651200 | Slurry-transporting facility and slurry transportation control method | Satoshi Matsubara, Hiroyuki Mitsui, Kenji Tachi, Masayuki Oku | 2017-05-16 |
| 9561972 | Method for effluent treatment in smelting of nickel oxide ore | Yasuo Yoshii, Keisuke Shibayama, Yoji Kyoda, Yoshitomo Ozaki, Hiroyuki Mitsui | 2017-02-07 |
| 9550674 | Plant for manufacturing hydrogen sulfide gas and method for exhausting hydrogen sulfide gas | Satoshi Matsubara, Tomoyuki Hirose, Koichi Nakagawa | 2017-01-24 |
| 9480956 | Hydrogen sulfide gas production plant and method for recovering and using waste hydrogen sulfide gas | Satoshi Matsubara, Tomoyuki Hirose, Masafumi Nakamura | 2016-11-01 |
| 9464341 | Flash vessel and method for operating same | Satoshi Matsubara, Yoji Kyoda, Takashi Sakamoto | 2016-10-11 |
| 9410226 | Ore slurry production method and metal refining method | Hiroyuki Mitsui, Keisuke Shibayama, Hirofumi Shoji, Tatsuya Higaki, Yoji Kyoda | 2016-08-09 |
| 9321646 | Hydrogen sulfide gas production plant system and method for recovering and using hydrogen sulfide gas | Satoshi Matsubara, Tomoyuki Hirose, Kouichi Nakagawa, Masafumi Nakamura | 2016-04-26 |
| 9139890 | Liquid storage apparatus and method of controlling the pressure in the same | Hiroyuki Mitsui, Moritarou Asatori | 2015-09-22 |
| 9068244 | Method for recovering chromite, and method for wet smelting of nickel oxide ore | Hiroyuki Mitsui, Hirotaka Kawasaki, Hiroshi Kobayashi, Tatsuya Higaki, Atsushi Idegami | 2015-06-30 |
| 9068241 | Method of producing ore slurry | Hiroyuki Mitsui | 2015-06-30 |
| 8916115 | Nickel recovery loss reduction method, hydrometallurgical method for nickel oxidized ore, and sulfuration treatment system | Satoshi Matsubara, Hiroyuki Mitsui | 2014-12-23 |
| 8911531 | Hydrometallurgical plant of nickel laterite ore and operation method thereof | Toru Kitazaki, Shinichi Heguri, Yoshitomo Ozaki, Keisuke Shibayama | 2014-12-16 |