Patents by Inventor Steven J. Hobbs

Steven J. Hobbs 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).

  • Multifunctional sulfur-containing polymers, compositions thereof and methods of use
    Patent number: 9382447
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: July 5, 2016
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
  • MULTIFUNCTIONAL SULFUR-CONTAINING POLYMERS, COMPOSITIONS THEREOF AND METHODS OF USE
    Publication number: 20160115350
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Application
    Filed: January 5, 2016
    Publication date: April 28, 2016
    Inventors: STEVEN J. HOBBS, GREGORY J. MCCOLLUM, JUEXIAO CAI, MARFI ITO, LAWRENCE G. ANDERSON, RENHE LIN
  • Multifunctional sulfur-containing polymers, compositions thereof and methods of use
    Patent number: 9260567
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: February 16, 2016
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
  • MULTIFUNCTIONAL SULFUR-CONTAINING POLYMERS, COMPOSITIONS THEREOF AND METHODS OF USE
    Publication number: 20150344631
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Application
    Filed: July 9, 2015
    Publication date: December 3, 2015
    Inventors: STEVEN J. HOBBS, GREGORY J. MCCOLLUM, JUEXIAO CAI, MARFI ITO, LAWRENCE G. ANDERSON, RENHE LIN
  • Multifunctional sulfur-containing polymers, compositions thereof and methods of use
    Patent number: 9109089
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: August 18, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
  • MULTIFUNCTIONAL SULFUR-CONTAINING POLYMERS, COMPOSITIONS THEREOF AND METHODS OF USE
    Publication number: 20150183806
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Application
    Filed: March 13, 2015
    Publication date: July 2, 2015
    Inventors: Steven J. Hobbs, Gregory J. MCCOLLUM, JUEXIAO CAI, MARFI ITO, LAWRENCE G. ANDERSON, RENHE LIN
  • Multifunctional sulfur-containing polymers, compositions thereof and methods of use
    Patent number: 9012592
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: April 21, 2015
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
  • MULTIFUNCTIONAL SULFUR-CONTAINING POLYMERS, COMPOSITIONS THEREOF AND METHODS OF USE
    Publication number: 20150018550
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Application
    Filed: September 29, 2014
    Publication date: January 15, 2015
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
  • Terminal-modified difunctional sulfur-containing polymers, compositions thereof and methods of use
    Patent number: 8889800
    Abstract: Disclosed are terminal-modified difunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, an aldehyde or a ketone, and a compound containing a functional group. Compositions comprising the terminal-modified difunctional sulfur-containing polymers useful as sealants are also disclosed.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: November 18, 2014
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Lawrence G. Anderson, Renhe Lin
  • Multifunctional sulfur-containing polymers, compositions thereof and methods of use
    Patent number: 8877887
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: November 4, 2014
    Assignee: PRC De Soto International, Inc.
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
  • TERMINAL-MODIFIED DIFUNCTIONAL SULFUR-CONTAINING POLYMERS, COMPOSITIONS THEREOF AND METHODS OF USE
    Publication number: 20140255609
    Abstract: Disclosed are terminal-modified difunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, an aldehyde or a ketone, and a compound containing a functional group. Compositions comprising the terminal-modified difunctional sulfur-containing polymers useful as sealants are also disclosed.
    Type: Application
    Filed: May 22, 2014
    Publication date: September 11, 2014
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Lawrence G. Anderson, Renhe Lin
  • Polyurea compositions and methods of use
    Patent number: 8802790
    Abstract: Disclosed are polyurea compositions comprising the reaction products of a polyformal-isocyanate prepolymer and a curing agent comprising an amine. The compositions are useful as sealants in aerospace applications.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: August 12, 2014
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Steven J. Hobbs, Juexiao Cai, Marfi Ito, Renhe Lin
  • MULTIFUNCTIONAL SULFUR-CONTAINING POLYMERS, COMPOSITIONS THEREOF AND METHODS OF USE
    Publication number: 20140206866
    Abstract: Disclosed are multifunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, a polyol containing at least three hydroxyl groups per polyol molecule, and an aldehyde, a ketone, or a combination thereof. Sealant compositions comprising the multifunctional sulfur-containing polymers are also disclosed.
    Type: Application
    Filed: February 11, 2014
    Publication date: July 24, 2014
    Inventors: Steven J. Hobbs, Gregory J. McCollum, Juexiao Cai, Marfi Ito, Lawrence G. Anderson, Renhe Lin
  • POLYUREA COMPOSITIONS AND METHODS OF USE
    Publication number: 20140171587
    Abstract: Disclosed are polyurea compositions comprising the reaction products of a polyformal-isocyanate prepolymer and a curing agent comprising an amine. The compositions are useful as sealants in aerospace applications.
    Type: Application
    Filed: February 20, 2014
    Publication date: June 19, 2014
    Inventors: Steven J. Hobbs, Juexiao Cai, Marfi Ito, Renhe Lin
  • PROCESSES FOR MAKING ALKYL HALIDES
    Publication number: 20100234653
    Abstract: The invention is directed to processes for producing an alkyl halide, preferably isobutyl bromide. In one embodiment, the process comprises the steps of: (a) contacting an alcohol with a hydrogen halide in a reactor at elevated temperature under conditions effective to form an initial product mixture comprising the alkyl halide, the alcohol, the hydrogen halide and water; (b) cooling the initial product mixture to form a cooled organic phase positioned above a cooled aqueous phase; (c) separating the cooled organic phase from the cooled aqueous phase. The process preferably further comprises a step of: (d) heating at least a portion of the cooled aqueous phase under conditions effective to form additional alkyl halide.
    Type: Application
    Filed: March 12, 2009
    Publication date: September 16, 2010
    Applicant: Chemtura Corporation
    Inventors: Mitchel Cohn, Steven J. Hobbs
  • Tetrazole fungicides
    Patent number: 7572753
    Abstract: The use of certain tetrazole compounds as fungicides is disclosed wherein said compounds are of the structural formula: wherein: R is selected from the group consisting of phenyl groups of the structural formula: and thienyl groups of the structural formula: and X and Y are each selected from the group consisting of hydrogen, haloalkyl, halogen, and nitro. Novel compounds wherein X is selected from the group consisting of haloalkyl, halogen, and nitro and Y is selected from the group consisting of hydrogen, haloalkyl, halogen, and nitro are also disclosed.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: August 11, 2009
    Assignee: Chemtura Corporation
    Inventors: Mark A. Dekeyser, Ahmad Ghavami, Robert G. Davis, Sheldon B. Park, Steven J. Hobbs, Clifford Pratt, Gaik-Lean Chee, Daniel Walther
  • Alkylation of N?-phenyl-N-alkylphenylenediamines in ionic liquid and N?-phenyl-N-alkyl(alkylphenylene) diamines produced thereby
    Patent number: 7563929
    Abstract: A process for alkylation of a N?-phenyl-N-alkyl-p-phenylenediamine of specified formula in an ionic liquid unexpectedly produces a N?-phenyl-N-alkyl(alkylphenylene)diamine of a second specified formula. The use of an inorganic liquid permits convenient separation of the alkylated reaction product from the reaction mixture.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: July 21, 2009
    Assignee: Chemtura Corporation
    Inventors: Steven J. Hobbs, Joseph F. Stieber
  • ALKYLATION OF N'-PHENYL-N-ALKYLPHENYLENEDIAMINES IN IONIC LIQUID AND N'-PHENYL-N-ALKYL(ALKYLPHENYLENE) DIAMINES PRODUCED THEREBY
    Publication number: 20080234517
    Abstract: A process for alkylation of a N?-phenyl-N-alkyl-p-phenylenediamine of specified formula in an ionic liquid unexpectedly produces a N?-phenyl-N-alkyl(alkylphenylene)diamine of a second specified formula. The use of an inorganic liquid permits convenient separation of the alkylated reaction product from the reaction mixture.
    Type: Application
    Filed: April 16, 2008
    Publication date: September 25, 2008
    Applicant: Chemtura Corporation
    Inventors: Steven J. HOBBS, Joseph F. STIEBER
  • Alkylation of N?-phenyl-N-alkylphenylenediamines in ionic liquid, N?-phenyl-N-alkyl (alkylphenylene) diamines produced thereby, and lubricant compositions containing same
    Patent number: 7390928
    Abstract: A process for alkylation of a N?-phenyl-N-alkyl-p-phenylenediamine of specified formula in an ionic liquid unexpectedly produces a N?-phenyl-N-alkyl(alkylphenylene)diamine of a second specified formula. The use of an inorganic liquid permits convenient separation of the alkylated reaction product from the reaction mixture.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: June 24, 2008
    Assignee: Chemtura Corporation
    Inventors: Steven J. Hobbs, Joseph F. Stieber
  • Ring alkylation of aniline or an aniline derivative using ionic liquid catalysts
    Patent number: 7378554
    Abstract: A process for ring-alkylating aniline or an aniline derivative in which aniline or an aniline derivative is reacted with an alkylating agent in the presence of an ionic liquid which includes a Lewis acid and a quaternary cation, to produce a ring-alkylated alkylaniline or a ring-alkylated aniline derivative. The use of an ionic liquid permits convenient separation of the alkylated reaction product from the reactants.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: May 27, 2008
    Assignee: Chemtura Corporation
    Inventors: Steven J. Hobbs, Venkatramanan K. Madabusi, Jin-Yun Wang, Joseph F. Steiber