Method for recovering scandium
US-2021284547-A1 · Sep 16, 2021 · US
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Nakai Osamu patents
Nakai Osamu is listed as an inventor on 45 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Nakai Osamu |
| Total patents | 45 |
| First publication | Jan 15, 2015 |
| Latest publication | Sep 16, 2021 |
Notable patents
Publications ranked by popularity score, then publication date.
Chromium-containing water treatment method
US-10442715-B2 · Oct 15, 2019 · US
Sulfuric acid adding facility and operation method therefor
US-10351929-B2 · Jul 16, 2019 · US
Ore slurry pre-treatment method and ore slurry manufacturing method
US-10273558-B2 · Apr 30, 2019 · US
Chromium-containing water treatment method
US-2018273411-A1 · Sep 27, 2018 · US
Method for producing nickel sulfide and hydrometallurgical method for nickel oxide ore
US-10017835-B2 · Jul 10, 2018 · US
Method for adding starting material slurry and sulfuric acid to autoclave in high pressure acid leaching process and autoclave
US-9970077-B2 · May 15, 2018 · US
Dezincification plant, method for operating dezincification plant, and hydrometallurgical method for nickel oxide ore
US-9945007-B2 · Apr 17, 2018 · US
Method for operating flash vessel
US-9896740-B2 · Feb 20, 2018 · US
Method for producing nickel sulfide and hydrometallurgical method for nickel oxide ore
US-2018044760-A1 · Feb 15, 2018 · US
Recent patents
Latest publications not already listed above.
Ore slurry pre-treatment method and ore slurry manufacturing method
US-2018037971-A1 · Feb 8, 2018 · US
Sulfuric acid adding facility and operation method therefor
US-2018030569-A1 · Feb 1, 2018 · US
Neutralization method and neutralization plant
US-9752211-B2 · Sep 5, 2017 · US
Operation method for dezincification plant
US-9751035-B2 · Sep 5, 2017 · US
Autoclave apparatus used during high-pressure acid leaching process
US-9732400-B2 · Aug 15, 2017 · US
Processing device and processing method for hydrogen-sulphide-containing barren solution
US-9731980-B2 · Aug 15, 2017 · US
Method for shortening operation shutdown time of high pressure acid leach equipment in a hydrometallurgical process
US-9719153-B2 · Aug 1, 2017 · US
Slurry-transporting facility and slurry transportation control method
US-9651200-B2 · May 16, 2017 · US
Method for effluent treatment in smelting of nickel oxide ore
US-9561972-B2 · Feb 7, 2017 · US
Plant for manufacturing hydrogen sulfide gas and method for exhausting hydrogen sulfide gas
US-9550674-B2 · Jan 24, 2017 · US
Hydrogen sulfide gas production plant and method for recovering and using waste hydrogen sulfide gas
US-9480956-B2 · Nov 1, 2016 · US
Flash vessel and method for operating same
US-9464341-B2 · Oct 11, 2016 · US
Ore slurry production method and metal refining method
US-9410226-B2 · Aug 9, 2016 · US
Hydrogen sulfide gas production plant system and method for recovering and using hydrogen sulfide gas
US-9321646-B2 · Apr 26, 2016 · US
Hydrometallurgical plant for nickel oxide ore and method for operating the hydrometallurgical plant
US-2016024614-A1 · Jan 28, 2016 · US
Plant for manufacturing hydrogen sulfide gas and method for exhausting hydrogen sulfide gas
US-2016002038-A1 · Jan 7, 2016 · US
Operation method for dezincification plant
US-2015352475-A1 · Dec 10, 2015 · US
Slurry-transporting facility and slurry transportation control method
US-2015338027-A1 · Nov 26, 2015 · US
Solid-liquid-separation processing method, and hydrometallurgical method for nickel oxide ore
US-2015337411-A1 · Nov 26, 2015 · US
Processing device and processing method for hydrogen-sulphide-containing barren solution
US-2015329379-A1 · Nov 19, 2015 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Sumitomo Metal Mining Co | 46 |
| Mitsui Hiroyuki | 4 |
| Nakai Osamu | 4 |
| Kawasaki Hirotaka | 2 |
| Kobayashi Hiroshi | 2 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| Y02P10/20 | 28 |
| C22B23/043 | 27 |
| C22B23/0461 | 15 |
| C22B3/02 | 12 |
| C22B3/04 | 11 |