Patents Examined by Thomas M. Lithgow
  • Patent number: 10737281
    Abstract: Improved sparge compositions for reverse froth flotation separation and uses thereof, and improved methods of reverse froth flotation are described. Described are sparge compositions comprising collectors and beneficiating agents, the collectors comprising sulfonated fatty acids and/or salts thereof, and the beneficiating agents comprising a hydroxy fatty acid composition. The sparge compositions are suitably used in the reverse froth flotation to separate phosphate beneficiary from ores comprising phosphate and dolomite, calcite, silicate, and/or other gangues. The disclosed compositions and methods exhibit improved separation of phosphate from such ores.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: August 11, 2020
    Assignee: Ecolab USA Inc.
    Inventors: Jianjun Liu, Suresh R. Sriram, Kevin O'Brien, Daniel N.T. Hay
  • Patent number: 10737280
    Abstract: The present invention relates to an azolethione flotation collector and application thereof. According to the application, an azolethione compound such as a 1,3,4-thiadiazole-2-thione compound, a 1,3,4-oxadiazole-2-thione compound, a 1,2,4-triazole-3-thione compound or a 1,2,4,5-tetrazole-3-thione compound is used as a mineral flotation collector to be applied to ores containing copper, zinc, lead, nickel, cobalt, platinum, palladium, silver or gold minerals to realize flotation recovery of valuable metal minerals. Compared with common flotation collectors in the existing technologies, the flotation collector of the present invention can effectively improve enrichment and recovery of copper, zinc, lead, nickel, cobalt, platinum, palladium, silver or gold minerals.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: August 11, 2020
    Assignee: CENTRAL SOUTH UNIVERSITY
    Inventors: Guangyi Liu, Yaoguo Huang, Longqun Ma, Xiaoxue Niu, Jun Liu, Hong Zhong, Zhe Hu
  • Patent number: 10737206
    Abstract: A filter and its holder each have a keyed surface, one being a protruding “key” and one being a recessed “lock,” wherein cooperation of these keyed surfaces is required in order for the filter to be installed in the holder. Modification/adaptation of the keyed surfaces, by changing the location, number and length of the key protrusions and cooperating recesses during manufacture, allows various sets of mating filters and holders to be produced so that only mating/matching filters and holders may be connected together. The keyed protrusions are preferably located on an upper shoulder or on protruding flange(s) of the upper end of the filter. The cooperating recess structure inside the filter holder comprises axial recesses that allow axial insertion of the key protrusions, and hence the filter, into the holder and also a circumferential recesses portion that receives multiple key protrusions to retain the filter in the holder.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: August 11, 2020
    Assignee: OMNIPURE FILTER COMPANY, INC.
    Inventor: Roger P. Reid
  • Patent number: 10737201
    Abstract: A filter system (100) has at least one filter element (10), a filter housing (108) having at least one first housing part and one second housing part, in particular a lid (110), as well as a coupling device (50). The coupling device (50) thereby has at least one first coupling part (60) and at least one second coupling part (70) that corresponds to it for removable coupling of the at least one filter element (10) to the second housing part (110). The first coupling part (60) has one or a plurality of first latching means (62) and control surfaces (64). The second coupling part (70) has one or a plurality of second latching means (72) that can be brought into operative connection with the one or a plurality of first latching means (62) and control surfaces (64).
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: August 11, 2020
    Assignee: MANN+HUMMEL GmbH
    Inventors: André Roesgen, Petra Skorpíková, Markus Nefzer, Fabian Wagner, Frank Pflueger, Robert Hasenfratz, Christian Thalmann
  • Patent number: 10717090
    Abstract: A method of depressing copper sulfides and iron sulfides in a molybdenite flotation recovery process that uses alkaline or alkaline earth polysulfides. The method of enriching molybdenite content from a slurry having molybdenite and at least one of iron sulfides and copper sulfides can include the steps of adding an effective amount of a depressing reagent selected from one or more alkaline polysulfides, alkaline earth polysulfides, or a mixture thereof, to the slurry, wherein the pH of the slurry is greater than about 8.0; and passing a gas through the slurry to separate material by selective flotation, and recovering the molybdenite from a froth.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: July 21, 2020
    Assignee: Tessenderlo Kerley, Inc.
    Inventors: Alexandros Dimitriadis, Theodore E. Cook
  • Patent number: 10710020
    Abstract: Solvent absorption processes for separating components of an impure feed gas are disclosed. The processes involve two stages of gas purification. The acid gases including hydrogen sulfide, carbon dioxide and other sulfur compounds are simultaneously removed from the feed gas by contact with a physical solvent in two stages. The subject matter disclosed provides improved processes to reduce the operating costs of the system.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: July 14, 2020
    Inventor: Xiaoming Wen
  • Patent number: 10710099
    Abstract: Compositions including blends of one or more acrylamide/allyl thiourea polymer as a first depressant, and one or more carboxyalkyl dithiocarbamate compound as a second depressant, and their use as depressants in the beneficiation of sulfide minerals from ores and/or concentrates are disclosed herein, along with methods for selectively separating value sulfide minerals from non-value sulfide minerals in a froth flotation process for the recovery of such value minerals.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: July 14, 2020
    Assignee: Cytec Industries Inc.
    Inventors: Mikael Brasse, Esau Arinaitwe, Devarayasamudram Ramachandran Nagaraj
  • Patent number: 10710904
    Abstract: The present invention relates to a device and a process for purification of grey water. In particular the invention relates to in-home purification of grey water generated from laundry wash and/or rinse liquor for water saving by re-use. Surprisingly it has been found that it is possible to design a device and a process where, by continuous aeration, foam breaking and separation, the laundry wash and rinse water can be made substantially free of surfactants. This water is then preferably filtered to recover fresh water which can be reused for multiple applications.
    Type: Grant
    Filed: September 30, 2014
    Date of Patent: July 14, 2020
    Assignee: CONOPCO, INC.
    Inventors: Jaideep Chatterjee, Shajahan Abdul Kareem, Santosh Kumar Gupta, Shailendra Pratap, Rajeesh Kumar Ramachandran
  • Patent number: 10675572
    Abstract: A filter pad for use in a dewatering container is presented. The filter pad is configured to fit within the interior cavity and substantially line the interior surfaces. Material, which is usually liquids and slurries, is added to the container with the filter in place and gravity is used to filter the sediment, while the water is released through a release nozzle. The solids are retained in the filter pad for later disposal. The filter pad has a portion that can be selectively opened and is configured for placement substantially adjacent the door to permit selective egress of contents of the interior cavity.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: June 9, 2020
    Assignee: Day Enterprises LLC
    Inventor: Timothy Day
  • Patent number: 10678207
    Abstract: A method and apparatus are provided to control of a flotation separation process, including parameters of the flotation process and reagent addition to optimize mineral recovery. The apparatus includes a signal processor or processing module configured at least to receive signalling containing information about at least one acoustic characteristic of a froth layer in a flotation cell or tank of a flotation separation process; and determine a control characteristic related to the flotation separation process based at least partly on the signalling received. The signal processor or processing module may also be configured at least to: provide corresponding signalling containing information to control the flotation separation process based at least partly on the control characteristic determined.
    Type: Grant
    Filed: September 6, 2011
    Date of Patent: June 9, 2020
    Assignee: CiDRA Corporate Service Inc.
    Inventors: Paul Joseph Rothman, Christian Victor O'Keefe
  • Patent number: 10675563
    Abstract: Disclosed are a filter element and a filter device using the filter element. The filter element includes: a base, wherein the base is installed on the filter device, and a first passage and a second passage are disposed at least partially in the base; and a filter body, wherein the filter body is detachably connected to an upper part of the base, the filter body has a filter space therein, a first filter passage and a second filter passage are connected and arranged on the two ends of the filter space, and a filter material for filtration is provided in the filter space. When the filter element is in a working state, the first filter passage and the first passage are connected for fluid communication, and the second filter passage and the second passage are connected for fluid communication.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: June 9, 2020
    Assignees: Foshan Viomi Electrical Technology Co., Ltd., Xiaomi Inc.
    Inventors: Xiaoping Chen, Xinyu Liu
  • Patent number: 10668413
    Abstract: An endless elongate structure adapted to circulate around a path. The endless elongate structure comprises a central longitudinal portion and two lateral longitudinal portions on opposed sides of the central longitudinal portion for supporting the central longitudinal portion therebetween. The central longitudinal portion and two lateral longitudinal portions are connected together by joiners. The central longitudinal portion is adapted to be assembled into a movable tubular formation which is adapted to be continuously assembled at one end thereof and continuously disassembled at another end thereof during movement of the elongate structure along the path. The central longitudinal portion has two longitudinal edge sections adapted to be releasably connected together for assembling the tubular formation by a slidably interlocking connector. The slidably interlocking connector is integrated with the two longitudinal edge sections by joiners.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: June 2, 2020
    Assignee: Z-FILTER PTY LTD
    Inventors: Bradley James Cole, Neil Deryck Bray Graham
  • Patent number: 10661282
    Abstract: Methods for preparing agglomerated hemicellulose compositions are provided. Agglomerated hemicellulose compositions comprising agglomerates are also provided herein. Also disclosed are processes for enriching a desired mineral from an ore comprising the desired mineral, wherein the process comprises carrying out a flotation process in the presence of one or more collecting agents and a depressant composition comprising an agglomerated hemicellulose composition.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: May 26, 2020
    Assignee: KEMIRA OYJ
    Inventors: Duane C. Wilson, Xihui Yin, Stephanie Kofsky-Wofford, Anna I. Casasús
  • Patent number: 10661206
    Abstract: A filter pad for use in a dewatering container is presented. The filter pad is configured to fit within the interior cavity and substantially line the interior surfaces. Material, which is usually liquids and slurries, is added to the container with the filter in place and gravity is used to filter the sediment, while the water is released through a release nozzle. The solids are retained in the filter pad for later disposal. The filter pad has a portion that can be selectively opened and is configured for placement substantially adjacent the door to permit selective egress of contents of the interior cavity. The filter pad has an open upper end with securing members for cooperating with container hooks to provide safe and easy removal of the filter pad.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: May 26, 2020
    Assignee: Day Enterprises LLC
    Inventor: Timothy Day
  • Patent number: 10654727
    Abstract: A method and system for de-oiling a feed comprising oil and water. The feed has an input temperature above the boiling point of water and an input pressure sufficient to maintain the water in a liquid state. In at least one embodiment, the method comprises pumping the feed with a motive pump through a phase separator having a restriction to effect a phase separation of oil and water in the feed and produce an agitated mixture, supplying the agitated mixture from the phase separator into a pressure vessel operating at a pressure sufficient to maintain in a liquid state water that is at a temperature above the boiling point of water, removing an oil phase from the pressure vessel, and removing a water phase from the pressure vessel.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: May 19, 2020
    Assignee: 1501367 Alberta Ltd.
    Inventor: Wade R. Bozak
  • Patent number: 10653980
    Abstract: Disclosed are capsule/tube connector/tube assemblies that eliminate a connection point in a filter capsule apparatus. A relatively soft tube is thermally or sonically bonded to a relatively hard tube connector that may have a tube receiving bore, a frustoconical tube receiving channel or a straight tube receiving channel. The tube connector is bonded to a filter capsule port. The manufacturing process can be either a one-step process bonding the tube and capsule during formation of the tube connector in one step, or a two-step process that binds the tube to the tube connector in one step and binds the tube connector to a filter capsule port in a second step. Single and dual-walled tubes may be used as well as single and dual-walled tubes having reinforcing material superposed about or embedded in the tube wall(s). A tube support collar is also disclosed.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: May 19, 2020
    Assignee: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
    Inventors: ZhenWu Lin, Hong Shen
  • Patent number: 10654048
    Abstract: The present invention discloses mining collector compositions containing sodium metabisulfite and a thiocarbonate compound. Flotation processes for recovering molybdenum from a copper-molybdenum concentrate using the collector compositions also are disclosed.
    Type: Grant
    Filed: March 1, 2018
    Date of Patent: May 19, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventor: Benigno Ramos
  • Patent number: 10646803
    Abstract: A liquid filter arrangement is provided, as well as methods of assembly and use. Advantageous features, relating to a preferred filter cartridge and a preferred slide arrangement, are provided.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: May 12, 2020
    Assignee: Donaldson Company, Inc.
    Inventors: Enrico Greco, Fabrizo Buratto, Mauro Cantoni, John Connelly, John Hacker
  • Patent number: 10639466
    Abstract: Disclosed is a tube/tube connector/capsule port assembly that eliminates a connection point in a filter capsule apparatus. A relatively soft tube is thermally or sonically bonded to a relatively hard tube connector that may have a tube receiving bore, frustoconical tube receiving channel or straight tube receiving channel. The tube connector is bonded to a filter capsule port. The manufacturing process can be either a one-step process bonding the tube, tube connector and capsule in one step, or a two-step process that binds the tube to the tube connector in the first step and then binds the tube/tube connector subassembly to a filter capsule housing during the housing's molding procedure. Single and dual-walled tubes may be used as well as single and dual-walled tubes having reinforcing material superposed about or embedded in the tube wall(s). A tube support collar is also disclosed.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: May 5, 2020
    Assignee: SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION
    Inventors: ZhenWu Lin, Jacob Andrews
  • Patent number: 10625178
    Abstract: A method for separating organic solvent(s) from an aqueous process stream including organic solvent(s), includes passing the aqueous stream including organic solvent(s) through a granular bed including glass granules, wherein at least 90% of said glass granules have a maximum particle diameter smaller than 1.0 mm.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: April 21, 2020
    Assignee: OUTOTEC (FINLAND) OY
    Inventors: Markku Kuosa, Antti Häkkinen, Leena Tanttu, Timo Jauhiainen, Bjarne Ekberg