Patents by Inventor Carol E. Mohler
Carol E. Mohler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11001512Abstract: The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a poly(ethylene oxide) copolymer, in particular a copolymer of ethylene oxide and one or more epoxy or glycidyl ether functionalized hydrophobic monomer. Said poly(ethylene oxide) copolymers are useful for the treatment of suspensions of particulate material, especially waste mineral slurries. The invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.Type: GrantFiled: April 30, 2015Date of Patent: May 11, 2021Assignee: Dow Global Technologies LLCInventors: Cole A. Witham, Matthew J. Hansen, James E. Hitt, Carol E. Mohler, Michael K. Poindexter
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Patent number: 10781117Abstract: The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a mixture of polyethylene glycol and polyethylene oxide polymers, in particular a mixture of one or more low molecular mass polyethylene glycol with one or more high molecular mass polyethylene oxide. Said mixture of polyethylene glycol and polyethylene oxide polymers is useful for the treatment of suspensions of particulate material, especially waste mineral slurries. The invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.Type: GrantFiled: August 9, 2016Date of Patent: September 22, 2020Assignee: Dow Global Technologies LLCInventors: Carol E. Mohler, Domonique Downing, Paul A. Gillis, Stephanie L. Hughes, Jason S. Moore, Michael K. Poindexter, Thomas L. Sanders, Jr., Harpreet Singh, Cole A. Witham
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Publication number: 20190233310Abstract: The present invention relates to a process for mixing a flocculant composition with mineral suspensions, especially waste mineral slurries, using an acoustic mixer. Preferably the flocculant composition is a polymeric flocculant composition preferably comprising a poly(ethylene oxide) homopolymer or copolymer. The process of the present invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, processing of oil sands tailings.Type: ApplicationFiled: July 18, 2017Publication date: August 1, 2019Applicant: Dow Global Technologies LLCInventors: Carol E. MOHLER, Michael K. POINDEXTER, Thomas L. SANDERS, JR., Cole A. WITHAM
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Publication number: 20190233777Abstract: The present invention provides a microemulsion remover comprising, based on the total weight of the microemulsion remover, 1) from 10% to 60%, at least one organic solvent, ii) from 10% to 50%, at least one co-solvent, iii) from 0.1% to 10%, at least one base, iv) from 0.1% to 10%, at least one oxidizer, v) from 0.1% to 10%, at least one surfactant, and vi) water.Type: ApplicationFiled: January 30, 2018Publication date: August 1, 2019Inventors: Adam K. Schmitt, Carol E. Mohler, Kathleen M. O'Connell, Christopher J. Tucker, Zhijian Lu, Shintaro Yamada
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Patent number: 10315944Abstract: The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a poly(ethylene oxide) copolymer, in particular a copolymer of ethylene oxide and one or more silane- or siloxane-functionalized glycidyl ether monomer. Said poly(ethylene oxide) copolymers are useful for the treatment of suspensions of particulate material, especially waste mineral slurries. The invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.Type: GrantFiled: April 30, 2015Date of Patent: June 11, 2019Assignee: Dow Global Technologies LLCInventors: Cole A. Witham, Matthew J. Hansen, James E. Hitt, Carol E. Mohler, Michael K. Poindexter
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Patent number: 10273398Abstract: A wellbore fluid including a peroxide degradable polymer and an encapsulated peroxide source. The peroxide degradable polymer may be a polysaccharide. The peroxide source may include an inorganic peroxide, including zinc and alkaline earth metal peroxides, such as magnesium peroxide. The encapsulating material may be a polymer, including a metal crosslinked acrylic polymer. The release of peroxide, from peroxide sources generally, can be controlled by means of pH such that peroxide source can be activated, and peroxide released, by a change in pH. In a wellbore, this pH change can be effected by using produced fluids to lower the pH of a more basic wellbore fluid.Type: GrantFiled: July 31, 2014Date of Patent: April 30, 2019Assignees: Dow Global Technologies LLCInventors: Chun Liu, Carol E. Mohler, Theodore Tysak, Paul Mercando, Kacee B. Ender, Disha Jain
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Publication number: 20180201528Abstract: The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a mixture of polyethylene glycol and polyethylene oxide polymers, in particular a mixture of one or more low molecular mass polyethylene glycol with one or more high molecular mass polyethylene oxide. Said mixture of polyethylene glycol and polyethylene oxide polymers is useful for the treatment of suspensions of particulate material, especially waste mineral slurries. The invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.Type: ApplicationFiled: August 9, 2016Publication date: July 19, 2018Inventors: Carol E. Mohler, Domonique Downing, Paul A. Gillis, Stephanie L. Hughes, Jason S. Moore, Michael K. Poindexter, Thomas L. Sanders, Harpreet Singh, Cole A. Witham
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Publication number: 20170247271Abstract: The present invention relates to a method for flocculating and dewatering oil sands fine tailings. Said method comprises mixing the aqueous mineral suspension with a poly(ethylene oxide) (co)polymer to form a dough-like material. The material is then dynamically mixed in an in-line reactor to break down the dough-like material to form microflocs having an average size of 1 to 500 microns, and to release water. The internal diameter of the in-line reactor is at most five times the internal diameter of the inlet pipe of the reactor. The suspension of microflocs has a viscosity of at most 1000 cP and a yield stress of at most 300 Pa.Type: ApplicationFiled: July 31, 2015Publication date: August 31, 2017Applicant: Dow Global Technologies LLCInventors: Paul A. Gillis, Jason S. Moore, Billy G. Smith, Michael D. Cloeter, Michael K. Poindexter, Carol E. Mohler, Wu Chen, Cole A. Witham, Justice Alaboson, Shankhadeep Das, Harpreet Singh
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Patent number: 9591870Abstract: Cellulose ethers are described herein which are useful in food compositions. In these cellulose ethers the ether substituents are methyl groups, hydroxyalkyl groups, and optionally alkyl groups being different from methyl, the cellulose ether has a DS(methyl) of from 1.65 to 2.20, an MS(hydroxyalkyl) of from 0.10 to 1.00, and hydroxy groups of anhydroglucose units are substituted with methyl groups such that [s23/s26?0.2*MS(hydroxyalkyl)] is 0.35 or less, wherein s23 is the molar fraction of anhydroglucose units wherein only the two hydroxy groups in the 2- and 3-positions of the anhydroglucose unit are substituted with methyl groups and wherein s26 is the molar fraction of anhydroglucose units wherein only the two hydroxy groups in the 2- and 6-positions of the anhydroglucose unit are substituted with methyl groups.Type: GrantFiled: June 6, 2012Date of Patent: March 14, 2017Inventors: Britta Huebner-Keese, Carol E. Mohler, Meinolf Brackhagen, Roland Adden, Robert L. Sammler, Jonathan D. Moore, Matthias Knarr
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Publication number: 20170036939Abstract: The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a poly(ethylene oxide) copolymer, in particular a copolymer of ethylene oxide and one or more silane- or siloxane-functionalized glycidyl ether monomer. Said poly(ethylene oxide) copolymers are useful for the treatment of suspensions of particulate material, especially waste mineral slurries. The invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.Type: ApplicationFiled: April 30, 2015Publication date: February 9, 2017Applicant: Dow Global Technologies LLCInventors: Cole Witham, Matthew J. Hansen, James E. Hitt, Carol E. Mohler, Michael K. Poindexter
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Publication number: 20170036929Abstract: The present invention relates to a method of dewatering an aqueous mineral suspension comprising introducing into the suspension a flocculating system comprising a poly(ethylene oxide) copolymer, in particular a copolymer of ethylene oxide and one or more epoxy or glycidyl ether functionalized hydrophobic monomer. Said poly(ethylene oxide) copolymers are useful for the treatment of suspensions of particulate material, especially waste mineral slurries. The invention is particularly suitable for the treatment of tailings and other waste material resulting from mineral processing, in particular, the processing of oil sands tailings.Type: ApplicationFiled: April 30, 2015Publication date: February 9, 2017Applicant: Dow Global Technologies LLCInventors: Cole A. Witham, Matthew J. Hansen, James E. Hitt, Carol E. Mohler, Michael K. Poindexter
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Publication number: 20140134317Abstract: Cellulose ethers are described herein which are useful in food compositions. In these cellulose ethers the ether substituents are methyl groups, hydroxyalkyl groups, and optionally alkyl groups being different from methyl, the cellulose ether has a DS(methyl) of from 1.65 to 2.20, an MS(hydroxyalkyl) of from 0.10 to 1.00, and hydroxy groups of anhydroglucose units are substituted with methyl groups such that [s23/s26?0.2*MS(hydroxyalkyl)] is 0.35 or less, wherein s23 is the molar fraction of anhydroglucose units wherein only the two hydroxy groups in the 2- and 3-positions of the anhydroglucose unit are substituted with methyl groups and wherein s26 is the molar fraction of anhydroglucose units wherein only the two hydroxy groups in the 2- and 6-positions of the anhydroglucose unit are substituted with methyl groups.Type: ApplicationFiled: June 6, 2012Publication date: May 15, 2014Applicant: Dow Global Technologies LLCInventors: Britta Huebner-Keese, Carol E. Mohler, Meinolf Brackhagen, Roland Adden, Robert L. Sammler, Jonathan D. Moore, Matthias Knarr
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Patent number: 6593155Abstract: This invention is a method comprising preparing a sample by coating a thin film of a precursor material, which is free of fluorescent probe molecules onto a substrate and subjecting the precursor material to conditions to attempt to cause cure of the precursor to an organic, aromatic, polymer having a dielectric constant of less than 3.0, exposing the sample to radiation having a wavelength in the range of 200 to 500 nm, detecting a resulting emission of radiation, and comparing the emission to the emission for a known cured, non-oxidized standard for the polymer.Type: GrantFiled: December 28, 2000Date of Patent: July 15, 2003Assignee: Dow Global Technologies Inc.Inventors: Carol E. Mohler, Robert A. Devries
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Publication number: 20020086429Abstract: This invention is a method comprising preparing a sample by coating a thin film of a precursor material, which is free of fluorescent probe molecules onto a substrate and subjecting the precursor material to conditions to attempt to cause cure of the precursor to an organic, aromatic, polymer having a dielectric constant of less than 3.0, exposing the sample to radiation having a wavelength in the range of 200 to 500 nm, detecting a resulting emission of radiation, and comparing the emission to the emission for a known cured, non-oxidized standard for the polymer.Type: ApplicationFiled: December 28, 2000Publication date: July 4, 2002Inventors: Carol E. Mohler, Robert A. Devries