Patents by Inventor David R. Snead
David R. Snead 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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Publication number: 20230201787Abstract: Systems and methods for synthesizing chemical products, including active pharmaceutical ingredients, are provided. Certain of the systems and methods described herein are capable of manufacturing multiple chemical products without the need to fluidically connect or disconnect unit operations when switching from one making chemical product to making another chemical product.Type: ApplicationFiled: December 21, 2022Publication date: June 29, 2023Applicant: Massachusetts Institute of TechnologyInventors: Klavs F. Jensen, Timothy F. Jamison, Allan Stuart Myerson, Jean-Christophe M. Monbaliu, Mohsen Behnam, Shin Yee Wong, Nopphon Weeranoppanant, Eve Marie Revalor, Torsten Stelzer, Jie Chen, Andrea Adamo, David R. Snead, Ping Zhang
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Patent number: 11565230Abstract: Systems and methods for synthesizing chemical products, including active pharmaceutical ingredients, are provided. Certain of the systems and methods described herein are capable of manufacturing multiple chemical products without the need to fluidically connect or disconnect unit operations when switching from one making chemical product to making another chemical product.Type: GrantFiled: August 10, 2020Date of Patent: January 31, 2023Assignee: Massachusetts Institute of TechnologyInventors: Klavs F. Jensen, Timothy F. Jamison, Allan S. Myerson, Jean-Christophe M. Monbaliu, Mohsen Behnam, Shin Yee Wong, Nopphon Weeranoppanant, Eve Marie Revalor, Torsten Stelzer, Jie Chen, Andrea Adamo, David R. Snead, Ping Zhang
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Publication number: 20200368710Abstract: Systems and methods for synthesizing chemical products, including active pharmaceutical ingredients, are provided. Certain of the systems and methods described herein are capable of manufacturing multiple chemical products without the need to fluidically connect or disconnect unit operations when switching from one making chemical product to making another chemical product.Type: ApplicationFiled: August 10, 2020Publication date: November 26, 2020Applicant: Massachusetts Institute of TechnologyInventors: Klavs F. Jensen, Timothy F. Jamison, Allan S. Myerson, Jean-Christophe M. Monbaliu, Mohsen Behnam, Shin Yee Wong, Nopphon Weeranoppanant, Eve Marie Revalor, Torsten Stelzer, Jie Chen, Andrea Adamo, David R. Snead, Ping Zhang
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Patent number: 10780410Abstract: Systems and methods for synthesizing chemical products, including active pharmaceutical ingredients, are provided. Certain of the systems and methods described herein are capable of manufacturing multiple chemical products without the need to fluidically connect or disconnect unit operations when switching from one making chemical product to making another chemical product.Type: GrantFiled: August 14, 2015Date of Patent: September 22, 2020Assignee: Massachusetts Institute of TechnologyInventors: Klavs F. Jensen, Timothy F. Jamison, Allan S. Myerson, Jean-Christophe M. Monbaliu, Mohsen Behnam, Shin Yee Wong, Nopphon Weeranoppanant, Eve Marie Revalor, Torsten Stelzer, Jie Chen, Andrea Adamo, David R. Snead, Ping Zhang
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Patent number: 9982395Abstract: Strengthening resins and methods for making and using same. The strengthening resin can include a polyamine partially cross-linked with a bridging moiety and having azetidinium ions. The bridging moiety can be derived from a functionally symmetric cross-linker. The functionally symmetric cross-linker can include a diisocyanate, a 1,3-dialkyldiazetidine-2,4-dione, a dianhydride, a diacyl halide, a dienone, a dialkyl halide, or any mixture thereof.Type: GrantFiled: May 29, 2015Date of Patent: May 29, 2018Assignee: ECOLAB USA INC.Inventors: Clay E. Ringold, Cornel Hagiopol, Dexter C. Johnson, Brian L. Swift, David R. Snead
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Patent number: 9815717Abstract: Methods for removing particulates from an aqueous suspension are provided. In at least one specific embodiment, the method can include mixing a polyamidoamine-epihalohydrin resin with an aqueous suspension comprising one or more first particulates to produce a treated mixture. An amount of the polyamidoamine-epihalohydrin resin in the treated mixture can be less than 500 g/tonne of the one or more first particulates. The method can also include recovering from the treated mixture a purified water having a reduced concentration of the one or more first particulates relative to the aqueous suspension, a purified first particulate product having a reduced concentration of water relative to the aqueous suspension, or both.Type: GrantFiled: November 6, 2014Date of Patent: November 14, 2017Assignee: Georgia-Pacific Chemicals LLCInventors: David R. Snead, Clay E. Ringold, Brian L. Swift
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Publication number: 20160114335Abstract: Compositions, aqueous mixtures that include the composition and an ore, and methods for making and using same are provided. The composition can include a tall oil and a saccharide-based monoester that can have the chemical formula (A). The aqueous mixture can include an ore, water, the tall oil, and the saccharide-based monoester that can have the chemical formula (A). The method can include combining the ore, water, the tall oil, and the saccharide-based monoester that can have the chemical formula (A) to produce an aqueous mixture. The method can also include collecting a purified ore from the aqueous mixture. In the chemical formula (A), R1 can be a saccharide group having 1 to 14 hydroxyl groups and R2 can be a C9 to C24 chain having 1 to 5 unsaturated bonds.Type: ApplicationFiled: October 22, 2015Publication date: April 28, 2016Applicant: GEORGIA-PACIFIC CHEMICALS LLCInventor: David R. Snead
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Publication number: 20160114337Abstract: Compositions, aqueous mixtures that include the composition and an ore, and methods for making and using same. The composition can include an organic acid and a polyamidoamine. The polyamidoamine can have the chemical formula (A). In the chemical formula (A), R1 and R2 can independently be a saturated or unsaturated, substituted or unsubstituted, linear or branched, cyclic, heterocyclic, or aromatic hydrocarbyl group, R3 and R4 can independently be hydrogen or a saturated or unsaturated, substituted or unsubstituted, linear or branched, cyclic, heterocyclic, or aromatic hydrocarbyl group, each m can be an integer of 1 to 5, and n can be an integer of 2 to 8. The aqueous mixture can include an ore, water, and the composition.Type: ApplicationFiled: October 22, 2015Publication date: April 28, 2016Applicant: GEORGIA-PACIFIC CHEMICALS LLCInventors: David R. Snead, Brian L. Swift
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Publication number: 20160114338Abstract: Compositions that include a polyamidoamine, aqueous mixtures that include the polamidoamine and an ore, and methods for making and using same. The composition can include a polyamidoamine having the chemical formula (A). In the chemical formula (A), R1 and R2 can be different and can be selected from a saturated or unsaturated, substituted or unsubstituted, linear or branched, cyclic, heterocyclic, or aromatic hydrocarbyl group, R3 and R4 can independently be hydrogen or a saturated or unsaturated, substituted or unsubstituted, linear or branched, cyclic, heterocyclic, or aromatic hydrocarbyl group, each m can be an integer of 1 to 5, and n can be an integer of 2 to 8. The aqueous mixture can include an ore, water, and the composition.Type: ApplicationFiled: October 22, 2015Publication date: April 28, 2016Applicant: GEORGIA-PACIFIC CHEMICALS LLCInventor: David R. Snead
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Publication number: 20150259859Abstract: Strengthening resins and methods for making and using same. The strengthening resin can include a polyamine partially cross-linked with a bridging moiety and having azetidinium ions. The bridging moiety can be derived from a functionally symmetric cross-linker. The functionally symmetric cross-linker can include a diisocyanate, a 1,3-dialkyldiazetidine-2,4-dione, a dianhydride, a diacyl halide, a dienone, a dialkyl halide, or any mixture thereof.Type: ApplicationFiled: May 29, 2015Publication date: September 17, 2015Applicant: GEORGIA-PACIFIC CHEMICALS LLCInventors: Clay E. Ringold, Cornel Hagiopol, Dexter C. Johnson, Brian L. Swift, David R. Snead
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Publication number: 20150129506Abstract: Methods for removing particulates from an aqueous suspension are provided. In at least one specific embodiment, the method can include mixing a polyamidoamine-epihalohydrin resin with an aqueous suspension comprising one or more first particulates to produce a treated mixture. An amount of the polyamidoamine-epihalohydrin resin in the treated mixture can be less than 500 g/tonne of the one or more first particulates. The method can also include recovering from the treated mixture a purified water having a reduced concentration of the one or more first particulates relative to the aqueous suspension, a purified first particulate product having a reduced concentration of water relative to the aqueous suspension, or both.Type: ApplicationFiled: November 6, 2014Publication date: May 14, 2015Applicant: Georgia-Pacific Chemicals LLCInventors: David R. Snead, Clay E. Ringold, Brian L. Swift
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Patent number: 8901336Abstract: Embodiments of the present disclosure provide for catalysts such as those shown in FIG. 1.1 and in the Examples, methods of making catalysts, methods of using catalysts, and the like.Type: GrantFiled: August 31, 2012Date of Patent: December 2, 2014Assignee: University of Florida Research Foundation, Inc.Inventors: Sukwon Hong, Hwi Min Seo, David R. Snead
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Publication number: 20130060056Abstract: Embodiments of the present disclosure provide for catalysts such as those shown in FIG. 1.1 and in the Examples, methods of making catalysts, methods of using catalysts, and the like.Type: ApplicationFiled: August 31, 2012Publication date: March 7, 2013Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.Inventors: Sukwon Hong, Hwi Min Seo, David R. Snead