Patents by Inventor Stephen J. Howard

Stephen J. Howard 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: 20220072738
    Abstract: Prepreg tapes suitable for automated placement process are formed by slitting a sheet of partially impregnated prepreg. The partially impregnated prepreg is composed of unidirectional fiber tows partially embedded in a resin layer and has a continuous resin surface only on one side. In some embodiments, one or two nonwoven veil(s) is/are incorporated into the partially impregnated prepreg.
    Type: Application
    Filed: December 21, 2019
    Publication date: March 10, 2022
    Inventors: Scott ROGERS, Stephen J. HOWARD, Scott LUCAS, Dominique PONSOLLE
  • Patent number: 11078174
    Abstract: A process is provided for making esters of FDCA, in which an aqueous feed comprising glucaric acid is first reacted with a high boiling first alcohol in the presence of an acid catalyst and with removing water during the reaction, to form a first product mixture comprising a first ester of FDCA and the high boiling first alcohol, then unreacted high boiling first alcohol is removed from the first product mixture. The first ester of FDCA and the high boiling first alcohol is then transesterified with a lower boiling second alcohol selected from the group consisting of methanol, ethanol, isopropanol and n-propanol, to form a second product mixture comprising a second ester of FDCA with the lower boiling second alcohol, and the second ester of FDCA with the lower boiling second alcohol is recovered.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: August 3, 2021
    Assignee: ARCHER DANIELS MIDLAND COMPANY
    Inventors: Pam Anklam, William Chris Hoffman, Stephen J. Howard, Alexandra Sanborn, Mitchell Schultz, John G. Soper
  • Patent number: 11028063
    Abstract: An integrated process is useful for producing 2,5-furandicarboxylic acid (FDCA) and/or a derivative thereof from a six-carbon sugar-containing feed. The process includes a) dehydrating a feed containing a six-carbon sugar unit, in the presence of a bromine source and of a solvent, to generate an oxidation feed that contains at least one of 5-hydroxymethylfurfural (HMF) and/or a derivative or derivatives of HMF in the solvent, together with at least one bromine containing species; b) contacting the oxidation feed from step (a) with a metal catalyst and with an oxygen source under oxidation conditions to produce an oxidation product mixture of at least FDCA and/or a derivative thereof, the solvent, and a residual catalyst; c) purifying and separating the mixture obtained in step (b) to obtain FDCA and/or a derivative thereof and the solvent; and d) recycling at least a portion of the solvent obtained in step (c) to step (a).
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: June 8, 2021
    Assignees: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC, ARCHER-DANIELS-MIDLAND COMPANY
    Inventors: Stephen J. Howard, Kristina A. Kreutzer, Bhuma Rajagopalan, Eric R. Sacia, Alexandra Sanborn, Brennan Smith
  • Publication number: 20210061764
    Abstract: Bivalent linkers to be included in or for preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates are described.
    Type: Application
    Filed: April 17, 2020
    Publication date: March 4, 2021
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Apparao Satyam, Stephen J. Howard
  • Patent number: 10821680
    Abstract: Curable prepregs possessing enhanced ability for the removal of gases from within prepregs and between prepreg plies in a prepreg layup prior to and/or during consolidation and curing. Each curable prepreg is a resin-impregnated, woven fabric that has been subjected to a treatment to create an array of openings in at least one major surface. Furthermore, the location of the openings is specific to the weave pattern of the fabric.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: November 3, 2020
    Assignee: CYTEC INDUSTRIES INC.
    Inventors: Mark Roman, Stephen J. Howard, Jack D. Boyd
  • Publication number: 20200339527
    Abstract: An integrated process is useful for producing 2,5-furandicarboxylic acid (FDCA) and/or a derivative thereof from a six-carbon sugar-containing feed. The process includes a) dehydrating a feed containing a six-carbon sugar unit, in the presence of a bromine source and of a solvent, to generate an oxidation feed that contains at least one of 5-hydroxymethylfurfural (HMF) and/or a derivative or derivatives of HMF in the solvent, together with at least one bromine containing species; b) contacting the oxidation feed from step (a) with a metal catalyst and with an oxygen source under oxidation conditions to produce an oxidation product mixture of at least FDCA and/or a derivative thereof, the solvent, and a residual catalyst; c) purifying and separating the mixture obtained in step (b) to obtain FDCA and/or a derivative thereof and the solvent; and d) recycling at least a portion of the solvent obtained in step (c) to step (a).
    Type: Application
    Filed: July 9, 2020
    Publication date: October 29, 2020
    Inventors: Stephen J. HOWARD, Kristina A. Kreutzer, Bhuma Rajagopalan, Eric R. Sacia, Alexandra Sanborn, Brennan Smith
  • Patent number: 10745369
    Abstract: An integrated process is useful for producing 2,5-furandicarboxylic acid (FDCA) and/or a derivative thereof from a six-carbon sugar-containing feed. The process includes a) dehydrating a feed containing a six-carbon sugar unit, in the presence of a bromine source and of a solvent, to generate an oxidation feed that contains at least one of 5-hydroxymethylfurfural (HMF) and/or a derivative or derivatives of HMF in the solvent, together with at least one bromine containing species; b) contacting the oxidation feed from step (a) with a metal catalyst and with an oxygen source under oxidation conditions to produce an oxidation product mixture of at least FDCA and/or a derivative thereof, the solvent, and a residual catalyst: c) purifying and separating the mixture obtained in step (b) to obtain FDCA and/or a derivative thereof and the solvent; and d) recycling at least a portion of the solvent obtained in step (c) to step (a).
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: August 18, 2020
    Assignees: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC, ARCHER DANIELS MIDLAND COMPANY
    Inventors: Stephen J. Howard, Kristina A. Kreutzer, Bhuma Rajagopalan, Eric R. Sacia, Alexandra Sanborn, Brennan Smith
  • Patent number: 10647676
    Abstract: This invention pertains to bivalent linkers, and the synthesis and use thereof. In particular, this invention pertains to the synthesis and use of bivalent linkers in preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates. The present invention includes divalent linkers, which are alternatively referred to as bivalent linkers, that may be used to couple, link, bond, attach, or otherwise associate two or more chemical entities. This coupling, linking, attachment, or association may be used in the formation of conjugates of such chemical entities. Those chemical entities include targeting ligands and receptor-binding ligands, such as vitamins. Those chemical entities also include drugs for treating various diseases or disease states, and imaging and diagnostic agents for diagnosing, detecting, or otherwise monitoring various diseases or disease states.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: May 12, 2020
    Assignee: Endocyte, Inc.
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Apparao Satyam, Stephen J. Howard
  • Publication number: 20200102280
    Abstract: A process is provided for making esters of FDCA, in which an aqueous feed comprising glucaric acid is first reacted with a high boiling first alcohol in the presence of an acid catalyst and with removing water during the reaction, to form a first product mixture comprising a first ester of FDCA and the high boiling first alcohol, then unreacted high boiling first alcohol is removed from the first product mixture. The first ester of FDCA and the high boiling first alcohol is then transesterified with a lower boiling second alcohol selected from the group consisting of methanol, ethanol, isopropanol and n-propanol, to form a second product mixture comprising a second ester of FDCA with the lower boiling second alcohol, and the second ester of FDCA with the lower boiling second alcohol is recovered.
    Type: Application
    Filed: June 20, 2018
    Publication date: April 2, 2020
    Applicant: Archer Daniels Midland Company
    Inventors: Pam Anklam, William Chris Hoffman, Stephen J. Howard, Alexandra Sanborn, Mitchell Schultz, John G. Soper
  • Publication number: 20200095218
    Abstract: An integrated process is useful for producing 2,5-furandicarboxylic acid (FDCA) and/or a derivative thereof from a six-carbon sugar-containing feed. The process includes a) dehydrating a feed containing a six-carbon sugar unit, in the presence of a bromine source and of a solvent, to generate an oxidation feed that contains at least one of 5-hydroxymethylfurfural (HMF) and/or a derivative or derivatives of HMF in the solvent, together with at least one bromine containing species; b) contacting the oxidation feed from step (a) with a metal catalyst and with an oxygen source under oxidation conditions to produce an oxidation product mixture of at least FDCA and/or a derivative thereof, the solvent, and a residual catalyst: c) purifying and separating the mixture obtained in step (b) to obtain FDCA and/or a derivative thereof and the solvent; and d) recycling at least a portion of the solvent obtained in step (c) to step (a).
    Type: Application
    Filed: November 26, 2019
    Publication date: March 26, 2020
    Inventors: Stephen J. HOWARD, Kristina A. Kreutzer, Bhuma Rajagopalan, Eric R. Sacia, Alexandra Sanborn, Brennan Smith
  • Patent number: 10538499
    Abstract: An integrated process is described for producing 2,5-furandicarboxylic acid and/or a derivative thereof from a six carbon sugar-containing feed, comprising: a) dehydrating a feed comprising a six-carbon sugar unit, in the presence of a bromine source and of a solvent, to generate an oxidation feed comprised of at least one of 5-hydroxymethylfurfural and/or a derivative or derivatives of 5-hydroxymethylfurfural in the solvent, together with at least one bromine containing species; b) contacting the oxidation feed from step (a) with a metal catalyst and with an oxygen source under oxidation conditions to produce an oxidation product mixture comprising 2,5-furandicarboxylic acid (FDCA) and/or a derivative thereof, the solvent, and a residual catalyst; c) purifying and separating the mixture obtained in step (b) to obtain FDCA and/or a derivative thereof and the solvent; and d) recycling at least a portion of the solvent obtained in step (c) to step (a).
    Type: Grant
    Filed: April 13, 2016
    Date of Patent: January 21, 2020
    Assignees: DUPONT INDUSTRIAL BIOSCIENCES USA, LLC, ARCHER DANIELS MIDLAND COMPANY
    Inventors: Stephen J. Howard, Kristina A. Kreutzer, Bhuma Rajagopalan, Eric R. Sacia, Alexandra Sanborn, Brennan Smith
  • Publication number: 20190300482
    Abstract: Bivalent linkers to be included in or for preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates are described.
    Type: Application
    Filed: June 18, 2019
    Publication date: October 3, 2019
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Apparao Satyam, Stephen J. Howard
  • Publication number: 20190216934
    Abstract: The invention describes a vitamin receptor binding drug delivery conjugate, and preparations therefor. The drug delivery conjugate consists of a vitamin receptor binding moiety, a bivalent linker (L), and a drug. The vitamin receptor binding moiety includes vitamins, and vitamin receptor binding analogs and derivatives thereof, and the drug includes analogs and derivatives thereof. The vitamin receptor binding moiety is covalently linked to the bivalent linker, and the drug, or the analog or the derivative thereof, is covalently linked to the bivalent linker, wherein the bivalent linker (L) includes components such as spacer linkers, releasable linkers, and heteroatom linkers, and combinations thereof. Methods and pharmaceutical compositions for eliminating pathogenic cell populations using the drug delivery conjugate are also described.
    Type: Application
    Filed: March 26, 2018
    Publication date: July 18, 2019
    Inventors: Iontcho R. VLAHOV, Christopher P. LEAMON, Matthew A. PARKER, Stephen J. HOWARD, Hari Krishna R. SANTHAPURAM, Apparao SATYAM, Joseph A. REDDY
  • Patent number: 10329696
    Abstract: Curable prepregs possessing enhanced ability for the removal of gases from within prepregs and between prepreg plies in a prepreg layup prior to and/or during consolidation and curing. Each curable prepreg is a resin-impregnated, woven fabric that has been subjected to a treatment to create an array of openings in at least one major surface. Furthermore, the location of the openings is specific to the weave pattern of the fabric.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: June 25, 2019
    Assignee: Cytec Industries Inc.
    Inventors: Mark Roman, Stephen J. Howard, Jack D. Boyd
  • Publication number: 20190153634
    Abstract: Curable prepregs possessing enhanced ability for the removal of gases from within prepregs and between prepreg plies in a prepreg layup prior to and/or during consolidation and curing. Each curable prepreg is a resin-impregnated, woven fabric that has been subjected to a treatment to create an array of openings in at least one major surface. Furthermore, the location of the openings is specific to the weave pattern of the fabric.
    Type: Application
    Filed: January 22, 2019
    Publication date: May 23, 2019
    Applicant: CYTEC INDUSTRIES INC.
    Inventors: Mark ROMAN, Stephen J. HOWARD, Jack D. BOYD
  • Publication number: 20190105399
    Abstract: The invention describes a vitamin receptor binding drug delivery conjugate, and preparations therefor. The drug delivery conjugate consists of a vitamin receptor binding moiety, a bivalent linker (L), and a drug. The vitamin receptor binding moiety includes vitamins, and vitamin receptor binding analogs and derivatives thereof, and the drug includes analogs and derivatives thereof. The vitamin receptor binding moiety is covalently linked to the bivalent linker, and the drug, or the analog or the derivative thereof, is covalently linked to the bivalent linker, wherein the bivalent linker (L) includes components such as spacer linkers, releasable linkers, and heteroatom linkers, and combinations thereof. Methods and pharmaceutical compositions for eliminating pathogenic cell populations using the drug delivery conjugate are also described.
    Type: Application
    Filed: March 26, 2018
    Publication date: April 11, 2019
    Inventors: Iontcho R. VLAHOV, Christopher P. LEAMON, Matthew A. PARKER, Stephen J. HOWARD, Hari Krishna R. SANTHAPURAM, Apparao SATYAM, Joseph A. REDDY
  • Publication number: 20190100494
    Abstract: Bivalent linkers to be included in or for preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates are described.
    Type: Application
    Filed: October 9, 2018
    Publication date: April 4, 2019
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Apparao Satyam, Stephen J. Howard
  • Publication number: 20180093961
    Abstract: An integrated process is described for producing 2,5-furandicarboxylic acid and/or a derivative thereof from a six carbon sugar-containing feed, comprising: a) dehydrating a feed comprising a six-carbon sugar unit, in the presence of a bromine source and of a solvent, to generate an oxidation feed comprised of at least one of 5-hydroxymethylfurfural and/or a derivative or derivatives of 5-hydroxymethylfurfural in the solvent, together with at least one bromine containing species; b) contacting the oxidation feed from step (a) with a metal catalyst and with an oxygen source under oxidation conditions to produce an oxidation product mixture comprising 2,5-furandicarboxylic acid (FDCA) and/or a derivative thereof, the solvent, and a residual catalyst; c) purifying and separating the mixture obtained in step (b) to obtain FDCA and/or a derivative thereof and the solvent; and d) recycling at least a portion of the solvent obtained in step (c) to step (a).
    Type: Application
    Filed: April 13, 2016
    Publication date: April 5, 2018
    Inventors: Stephen J. Howard, Kristina A. Kreutzer, Bhuma Rajagopalan, Eric R. Sacia, Alexandra Sanborn, Brennan Smith
  • Publication number: 20180009176
    Abstract: Curable prepregs possessing enhanced ability for the removal of gases from within prepregs and between prepreg plies in a prepreg layup prior to and/or during consolidation and curing. Each curable prepreg is a resin-impregnated, woven fabric that has been subjected to a treatment to create an array of openings in at least one major surface. Furthermore, the location of the openings is specific to the weave pattern of the fabric.
    Type: Application
    Filed: September 22, 2017
    Publication date: January 11, 2018
    Applicant: CYTEC INDUSTRIES INC.
    Inventors: Mark ROMAN, Stephen J. HOWARD, Jack D. BOYD
  • Publication number: 20170320826
    Abstract: Bivalent linkers to be included in or for preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates are described.
    Type: Application
    Filed: January 23, 2017
    Publication date: November 9, 2017
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Apparao Satyam, Stephen J. Howard