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).

  • Patent number: 9802358
    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: December 20, 2013
    Date of Patent: October 31, 2017
    Assignee: Cytec Industries Inc.
    Inventors: Mark Roman, Stephen J. Howard, Jack D. Boyd
  • Patent number: 9550734
    Abstract: Bivalent linkers to be included in or for preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates are described.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: January 24, 2017
    Assignee: Endocyte, Inc.
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Apparao Satyam, Stephen J. Howard
  • Publication number: 20160220694
    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: August 26, 2015
    Publication date: August 4, 2016
    Inventors: Iontcho R. VLAHOV, Christopher P. LEAMON, Matthew A. PARKER, Stephen J. HOWARD, Hari Krishna R. SANTHAPURAM, Apparao SATYAM, Joseph A. REDDY
  • Patent number: 9259879
    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. The location of the openings is specific to the weave pattern of the fabric. Furthermore, when these prepregs are laid up and subjected to a debulking process to form a composite part, a shorter debulking time can be achieved as compared to using prepregs without the same surface openings.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: February 16, 2016
    Assignee: Cytec Industries Inc.
    Inventors: Mark Roman, Stephen J. Howard, Jack D. Boyd, Scott Lucas
  • Publication number: 20160002167
    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 22, 2015
    Publication date: January 7, 2016
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Apparao Satyam, Stephen J. Howard
  • Publication number: 20150284354
    Abstract: Methods for the production of dehydrated sugars and derivatives of dehydrated sugars using microwave (MW) irradiation and methods of purifying the same are described. The dehydrated sugars derivatives include 5-hydroxymethyl-2-furfural (HMF) and anhydrosugar alcohols such as sorbitans and isosorbide. The derivatives include HMF ethers, levulinic acid esters, and ether derivatives of the anhydrosugar alcohols. The described methods require lower reaction temperatures and shorter reaction times than similar non microwave mediated reactions known in the art. Typical reaction conditions are 120-210° C., and typical reaction times are 30 minutes or less.
    Type: Application
    Filed: June 22, 2015
    Publication date: October 8, 2015
    Inventors: Stephen J. Howard, Alexandra J. Sanborn
  • Patent number: 9090563
    Abstract: Bivalent linkers to be included in or for preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates are described.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: July 28, 2015
    Assignee: Endocyte, Inc.
    Inventors: Iontcho Radoslavov Vlahov, Christopher Paul Leamon, Apparao Satyam, Stephen J. Howard
  • Patent number: 9090550
    Abstract: Methods for the production of dehydrated sugars and derivatives of dehydrated sugars using microwave (MW) irradiation and methods of purifying the same are described. The dehydrated sugars derivatives include 5-hydroxymethyl-2-furfural (HMF) and anhydrosugar alcohols such as sorbitans and isosorbide. The derivatives include HMF ethers, levulinic acid esters, and ether derivatives of the anhydrosugar alcohols. The described methods require lower reaction temperatures and shorter reaction times than similar non microwave mediated reactions known in the art. Typical reaction conditions are 120-210° C., and typical reaction times are 30 minutes or less.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: July 28, 2015
    Assignee: Archer Daniels Midland Company
    Inventors: Stephen J. Howard, Alexandra J. Sanborn
  • Publication number: 20140174632
    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. The location of the openings is specific to the weave pattern of the fabric. Furthermore, when these prepregs are laid up and subjected to a debulking process to form a composite part, a shorter debulking time can be achieved as compared to using prepregs without the same surface openings.
    Type: Application
    Filed: December 20, 2013
    Publication date: June 26, 2014
    Inventors: Mark Roman, Stephen J Howard, Jack D Boyd, Scott Lucas
  • Publication number: 20140174641
    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: December 20, 2013
    Publication date: June 26, 2014
    Applicant: Cytec Industries Inc.
    Inventors: Mark ROMAN, Stephen J HOWARD, Jack D BOYD
  • Patent number: 8748635
    Abstract: A method for alkylation of an anhydrosugar compound in which a dialkyl carbonate is reacted with an anhydrosugar compound in the presence of a solid phase basic catalyst. A typical anhydrosugar compound is anhydrosugar alcohol, a dianhydromonoether and mixtures thereof. The reaction step uses zeolyte as the solid phase basic catalyst. The zeolite catalyst is typically a zeolite having ammonium groups. The reaction is carried out at a temperature below 240° C. and the reaction time is 2 hours or less.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: June 10, 2014
    Assignee: Archer Daniels Midland Company
    Inventors: Alexandra J. Sanborn, Stephen J. Howard
  • Publication number: 20140058063
    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 5, 2013
    Publication date: February 27, 2014
    Applicant: ENDOCYTE, INC.
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Matthew A. Parker, Stephen J. Howard, Hari Krishna R. Santhapuram, Apparao Satyam, Joseph A. Reddy
  • Publication number: 20130158271
    Abstract: Bivalent linkers to be included in or for preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates are described.
    Type: Application
    Filed: September 11, 2012
    Publication date: June 20, 2013
    Inventors: Iontcho Radoslavov VLAHOV, Christopher Paul LEAMON, Apparao SATYAM, Stephen J. HOWARD
  • Publication number: 20130123520
    Abstract: Methods for the production of dehydrated sugars and derivatives of dehydrated sugars using microwave (MW) irradiation and methods of purifying the same are described. The dehydrated sugars derivatives include 5-hydroxymethyl-2-furfural (HMF) and anhydrosugar alcohols such as sorbitans and isosorbide. The derivatives include HMF ethers, levulinic acid esters, and ether derivatives of the anhydrosugar alcohols. The described methods require lower reaction temperatures and shorter reaction times than similar non microwave mediated reactions known in the art. Typical reaction conditions are 120-210° C., and typical reaction times are 30 minutes or less.
    Type: Application
    Filed: July 18, 2011
    Publication date: May 16, 2013
    Applicant: Archer Daniels Midland Company
    Inventors: Stephen J. Howard, Alexandra J. Sanborn
  • Patent number: 8288557
    Abstract: Bivalent linkers derived from compounds of formulae (V), (VI), and (VII), where X1 and X2 are leaving groups and the other variables are as defined in the claims, to be included in or for preparing vitamin, drug, diagnostic agent, and/or imaging agent conjugates are described.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: October 16, 2012
    Assignee: Endocyte, Inc.
    Inventors: Iontcho Radoslavov Vlahov, Christopher Paul Leamon, Apparao Satyam, Stephen J. Howard
  • Patent number: 8268926
    Abstract: Particle-toughened polymer compositions include a base polymer formulation and a plurality of toughening particles. In certain embodiments, the base polymer formulation includes bismaleimides or other polymer resins capable of high temperature service. A first plurality of toughening particles may include core shell rubbers. A second plurality of toughening particles may be selected from a variety of polymer compositions, including polyimides, polyether ketone (PEK), polyether ether ketone (PEEK), polyether ketone ketone (PEKK), polyether imide, polyether sulfones, and polyphenylene oxide. It is found that increasing concentration of the core shell rubbers may improve the toughness of the composition while preserving thermal properties of the composition, such as glass transition temperature.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: September 18, 2012
    Assignee: Cytec Technology Corp.
    Inventors: Mark Richard Bonneau, Jack Douglas Boyd, Gordon T. Emmerson, Scott D. Lucas, Stephen J. Howard, Spencer Donald Jacobs
  • Publication number: 20120065149
    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: September 7, 2011
    Publication date: March 15, 2012
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Matthew A. Parker, Stephen J. Howard, Hari Krishna Santhapuram, Apparao Satyam, Joseph Anand Reddy
  • Patent number: 8105568
    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: Grant
    Filed: July 10, 2009
    Date of Patent: January 31, 2012
    Assignee: Endocyte, Inc.
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Matthew A. Parker, Stephen J. Howard, Hari Krishna R. Santhapuram, Apparao Satyam, Joseph A. Reddy
  • Patent number: 8080313
    Abstract: Particle toughened, fiber-reinforced composites include a fiber region and an interlayer region between the fibers. The fiber region includes a plurality of fibers at least partially within a first polymer composition including a first base polymer formulation and a first plurality of toughening particles. The interlayer region includes a second polymer composition including a second base polymer formulation and at least one of the first plurality of toughening particles and a second plurality of toughening particles. Examples of first and second pluralities of toughening particles, respectively, may include core shell rubbers and polyimides. Increasing concentration of the first plurality of toughening particles may improve the composite toughness while preserving thermal properties of the composite, such as weight loss after extended duration exposure to elevated temperature.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: December 20, 2011
    Assignee: Cytec Technology Corp.
    Inventors: Mark Richard Bonneau, Jack Douglas Boyd, Gordon T. Emmerson, Scott D. Lucas, Stephen J. Howard, Spencer Donald Jacobs
  • Publication number: 20100004276
    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: July 10, 2009
    Publication date: January 7, 2010
    Inventors: Iontcho R. Vlahov, Christopher P. Leamon, Matthew A. Parker, Stephen J. Howard, Hari Krishna Santhapuram, Apparao Satyam, Joseph Anand Reddy