Description
Class B03D : FLOTATION; DIFFERENTIAL SEDIMENTATION
Subclass 1/002: Flotation Flotation agents Inorganic compounds
B03D 1/002
Sub-Class
Stats
- 32 US PATENTS IN FORCE
- 4 US APPLICATIONS PENDING
- 18 Total Patent Owners
- 125 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11779935 | Slow-release inhibitor for high-magnesium sulfide mineral flotation and application thereof | Nov 22, 19 | Oct 10, 23 | Central South University |
| 11697862 | Mineral processing method | Jun 01, 18 | Jul 11, 23 | Kyushu University National University Corporation; Sumitomo Metal Mining Co. Ltd.; |
| 11590514 | Collectors for treating tailings | Oct 25, 19 | Feb 28, 23 | Syncrude Canada Ltd. |
| 11485650 | System for recovering fat, oil and grease from wastewater | Jul 13, 18 | Nov 01, 22 | Besser Tech Holdings LLC |
| 11124857 | Process for separation of antimony and arsenic from a leach solution | Jun 21, 19 | Sep 21, 21 | GOLDCORP INC. |
| 10830623 | Sensor detection of the presence of an air core in a fluid conductor, and the flow rate of the fluid in the conductor | Feb 05, 16 | Nov 10, 20 | CiDRA Corporate Services, Inc. |
| 10822673 | Arsenic removal from lead concentrate by ozone treatment and reverse flotation | Dec 17, 19 | Nov 03, 20 | American Air Liquide, Inc. |
| 10717090 | Depression of copper and iron sulfides in molybdenite flotation circuits | Apr 09, 15 | Jul 21, 20 | Tessenderlo Kerley, Inc. |
| 10654048 | Recovery of molybdenum using sodium metabisulfite and a thiocarbonate depressant | Mar 01, 18 | May 19, 20 | Chevron Phillips Chemical Company LP |
| 10618058 | Beneficiation of rare earth elements bearing ancylite | Aug 01, 16 | Apr 14, 20 | Not available |
| 10413914 | Enrichment of metal sulfide ores by oxidant assisted froth flotation | Jan 25, 13 | Sep 17, 19 | Evonik Degussa GmbH |
| 10370739 | Stabilization process for an arsenic solution | Dec 21, 17 | Aug 06, 19 | GOLDCORP INC. |
| 10258996 | Separation of copper minerals from pyrite using air-metabisulfite treatment | Mar 22, 16 | Apr 16, 19 | Barrick Gold Corporation |
| 9968945 | Maximise the value of a sulphide ore resource through sequential waste rejection | Jun 23, 17 | May 15, 18 | ANGLO AMERICAN SERVICES (UK) LTD. |
| 9889452 | Methods for facilitating mineral extraction | Dec 22, 14 | Feb 13, 18 | CHEMTREAT, INC. |
| 9885095 | Process for separation of at least one metal sulfide from a mixed sulfide ore or concentrate | Jan 30, 15 | Feb 06, 18 | GOLDCORP INC. |
| 9643193 | Frothers for mineral flotation | Jul 20, 16 | May 09, 17 | ECOLAB USA INC. |
| 9586212 | Depressor in iron ore flotation comprising sugar cane bagasse, use of sugar cane bagasse as depressor in iron ore flotation and process of preparing depressor comprising sugar cane bagasse | Sep 04, 13 | Mar 07, 17 | VALE S.A. |
| 9567655 | Processes for the separation of ores | Oct 17, 13 | Feb 14, 17 | GEORGIA-PACIFIC CHEMICALS LLC |
| 9440242 | Frothers for mineral flotation | Oct 01, 13 | Sep 13, 16 | ECOLAB USA INC. |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2022/0184,637 | ORE DRESSING PROCESS FOR MEDIUM-GRADE AND LOW-GRADE MIXED COLLOPHANITE | Feb 04, 21 | Jun 16, 22 | Institute of Multipurpose Utilization of Mineral Resources, CAGS |
| 2019/0256,950 | PROCESS FOR METAL RECOVERY IN FLOTATION OPERATIONS | Feb 21, 19 | Aug 22, 19 | Not available |
| 2017/0028,409 | DEPRESSION OF COPPER AND IRON SULFIDES IN MOLYBDENITE FLOTATION CIRCUITS | Apr 09, 15 | Feb 02, 17 | TESSENDERLO KERLEY, INC. |
| 2016/0167,060 | METHOD FOR RECOVERING A COPPER SULFIDE FROM AN ORE CONTAINING AN IRON SULFIDE | Jul 11, 14 | Jun 16, 16 | EVONIK DEGUSSA GMBH |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 36 Months (last 2 years Issuances)
- 36 Months (last 5 years Issuances)