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).

  • Publication number: 20230201787
    Abstract: 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: Application
    Filed: December 21, 2022
    Publication date: June 29, 2023
    Applicant: Massachusetts Institute of Technology
    Inventors: 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
  • Patent number: 11565230
    Abstract: 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: Grant
    Filed: August 10, 2020
    Date of Patent: January 31, 2023
    Assignee: Massachusetts Institute of Technology
    Inventors: 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
  • Publication number: 20200368710
    Abstract: 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: Application
    Filed: August 10, 2020
    Publication date: November 26, 2020
    Applicant: Massachusetts Institute of Technology
    Inventors: 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
  • Patent number: 10780410
    Abstract: 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: Grant
    Filed: August 14, 2015
    Date of Patent: September 22, 2020
    Assignee: Massachusetts Institute of Technology
    Inventors: 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
  • Patent number: 9982395
    Abstract: 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: Grant
    Filed: May 29, 2015
    Date of Patent: May 29, 2018
    Assignee: ECOLAB USA INC.
    Inventors: Clay E. Ringold, Cornel Hagiopol, Dexter C. Johnson, Brian L. Swift, David R. Snead
  • Patent number: 9815717
    Abstract: 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: Grant
    Filed: November 6, 2014
    Date of Patent: November 14, 2017
    Assignee: Georgia-Pacific Chemicals LLC
    Inventors: David R. Snead, Clay E. Ringold, Brian L. Swift
  • Publication number: 20160114335
    Abstract: 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: Application
    Filed: October 22, 2015
    Publication date: April 28, 2016
    Applicant: GEORGIA-PACIFIC CHEMICALS LLC
    Inventor: David R. Snead
  • Publication number: 20160114337
    Abstract: 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: Application
    Filed: October 22, 2015
    Publication date: April 28, 2016
    Applicant: GEORGIA-PACIFIC CHEMICALS LLC
    Inventors: David R. Snead, Brian L. Swift
  • Publication number: 20160114338
    Abstract: 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: Application
    Filed: October 22, 2015
    Publication date: April 28, 2016
    Applicant: GEORGIA-PACIFIC CHEMICALS LLC
    Inventor: David R. Snead
  • Publication number: 20150259859
    Abstract: 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: Application
    Filed: May 29, 2015
    Publication date: September 17, 2015
    Applicant: GEORGIA-PACIFIC CHEMICALS LLC
    Inventors: Clay E. Ringold, Cornel Hagiopol, Dexter C. Johnson, Brian L. Swift, David R. Snead
  • Publication number: 20150129506
    Abstract: 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: Application
    Filed: November 6, 2014
    Publication date: May 14, 2015
    Applicant: Georgia-Pacific Chemicals LLC
    Inventors: David R. Snead, Clay E. Ringold, Brian L. Swift
  • Patent number: 8901336
    Abstract: 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: Grant
    Filed: August 31, 2012
    Date of Patent: December 2, 2014
    Assignee: University of Florida Research Foundation, Inc.
    Inventors: Sukwon Hong, Hwi Min Seo, David R. Snead
  • Publication number: 20130060056
    Abstract: 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: Application
    Filed: August 31, 2012
    Publication date: March 7, 2013
    Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.
    Inventors: Sukwon Hong, Hwi Min Seo, David R. Snead