Patents by Inventor Weiming Qiu

Weiming Qiu 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: 7071365
    Abstract: The compositions 3-alkylated-5,5?,6,6?,7,7?,8,8?-octahydro-2,2?-binaphthol and 3,3?-dialkylated-5,5?,6,6?,7,7?,8,8?-octahydro-2,2?-binaphthol are disclosed, as well as various processes for making them, all involving the alkylation of 5,5?,6,6?,7,7?,8,8?-octahydro-2,2?-binaphthol.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: July 4, 2006
    Assignee: Invista North America S.A.R.L.
    Inventors: Helen S. M. Lu, Weiming Qiu, Rafael Shapiro
  • Publication number: 20060115506
    Abstract: This invention provides a method for preserving wood by treating the wood with a composition comprising a dispersion of colloidal silica or colloidal alumina particles in a solvent and one or more organic biocides.
    Type: Application
    Filed: November 30, 2004
    Publication date: June 1, 2006
    Inventors: Mark Harmer, Weiming Qiu, Zhixiong Xue
  • Patent number: 7022457
    Abstract: The present invention pertains to photoimaging and the use of photoresists (positive-working and/or negative-working) for imaging in the production of semiconductor devices. The present invention also pertains to novel hydroxy ester-containing polymer compositions that are useful as base resins in resists and potentially in many other applications.
    Type: Grant
    Filed: September 24, 2003
    Date of Patent: April 4, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: William Brown Farnham, Andrew Edward Feiring, Frank Leonard Schadt, III, Weiming Qiu
  • Patent number: 6984604
    Abstract: Supported bis(phosphorus) ligands are disclosed for use in a variety of catalytic processes, including the isomerization, hydrogenation, hydroformylation, and hydrocyanation of unsaturated organic compounds. Catalysts are formed when the ligands are combined with a catalytically active metal, such as nickel.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: January 10, 2006
    Assignee: Invista North America S.A.R.L.
    Inventors: Michael W. Cobb, Weiming Qiu
  • Publication number: 20050182279
    Abstract: The compositions 3-alkylated-5,5?,6,6?,7,7?,8,8?-octahydro-2,2?-binaphthol and 3,3?-dialkylated-5,5?, 6,6?,7,7?,8,8?-octahydro-2,2?-binaphthol are disclosed, as well as various processes for making them, all involving the alkylation of 5,5?,6,6?,7,7?,8,8?-octahydro-2,2?-binaphthol.
    Type: Application
    Filed: April 11, 2005
    Publication date: August 18, 2005
    Inventors: Helen Lu, Weiming Qiu, Rafael Shapiro
  • Publication number: 20040142286
    Abstract: Disclosed are partially fluorinated that are substantially transparent to ultraviolet radiation at wavelengths from approximately 150 nanometer to 260 nanometers.
    Type: Application
    Filed: October 16, 2003
    Publication date: July 22, 2004
    Inventors: Roger Harquail French, Robert Clayton Wheland, Weiming Qiu
  • Publication number: 20040126697
    Abstract: The present invention pertains to photoimaging and the use of photoresists (positive-working and/or negative-working) for imaging in the production of semiconductor devices. The present invention also pertains to novel hydroxy ester-containing polymer compositions that are useful as base resins in resists and potentially in many other applications.
    Type: Application
    Filed: September 24, 2003
    Publication date: July 1, 2004
    Inventors: William Brown Farnham, Andrew Edward Feiring, Frank Leonard Schadt, Weiming Qiu
  • Publication number: 20040054237
    Abstract: The compositions 3-alkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol and 3,3′-dialkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol are disclosed, as well as various processes for making them, all involving the alkylation of 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol.
    Type: Application
    Filed: July 23, 2003
    Publication date: March 18, 2004
    Inventors: Helen S.M. Lu, Weiming Qiu, Rafael Shapiro
  • Publication number: 20040019237
    Abstract: Hexafluoroisobutylene and its higher homologs are easily reacted with SO3 to give fluorosulfates of the formula CH2═C(R)CF2OSO2F, wherein R is a linear, branched or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen. These compounds react under mild conditions with many nucleophiles to give CH2═C(R)CF2X, where X is derived from the nucleophile. This reaction provides a route to many substituted hexafluoroisobutylenes, which copolymerize easily with other fluoro- and hydrocarbon monomers such as vinylidene fluoride and ethylene.
    Type: Application
    Filed: May 9, 2003
    Publication date: January 29, 2004
    Inventors: Victor Filippovich Cherstkov, Nina Ivanova Delyagina, Richard E. Fernandez, Viacheslav A. Petrov, Weiming Qiu, Paul R. Resnick, Robert Clayton Wheland
  • Publication number: 20030153691
    Abstract: Supported bis(phosphorus) ligands are disclosed for use in a variety of catalytic processes, including the isomerization, hydrogenation, hydroformylation, and hydrocyanation of unsaturated organic compounds. Catalysts are formed when the ligands are combined with a catalytically active metal, such as nickel.
    Type: Application
    Filed: November 26, 2002
    Publication date: August 14, 2003
    Inventors: Michael W. Cobb, Weiming Qiu
  • Publication number: 20030100803
    Abstract: The compositions 3-alkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol and 3,3′-dialkylated-5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol are disclosed, as well as various processes for making them, all involving the alkylation of 5,5′,6,6′,7,7′,8,8′-octahydro-2,2′-binaphthol.
    Type: Application
    Filed: November 26, 2001
    Publication date: May 29, 2003
    Inventors: Helen S.M. Lu, Weiming Qiu, Rafael Shapiro
  • Patent number: 6486280
    Abstract: Disclosed herein are novel amorphous tetrafluoroethylene-hexafluoropropylene (TFE-HFP) dipolymers, and other copolymers containing TFE, HFP and a third monomer, many of which are more random than previous amorphous TFE-HFP copolymers, as well as a novel high productivity continuous process for making these polymers. The polymers are particularly useful in the form of coatings, films and encapsulants.
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: November 26, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Colin Anolick, Viacheslav Alexandrovich Petrov, Bruce Edmund Smart, Charles Winfield Stewart, Robert Clayton Wheland, William Brown Farnham, Andrew Edward Feiring, Weiming Qiu
  • Patent number: 6376705
    Abstract: Esters and other carboxylic acid derivatives of 3,3,4,4-tetrahydroperfluoroalkylcarboxylic acids are made by the iron promoted reaction of an ester of bromodifluoroacetic acid or other carboxylic acid derivatives and a (perfluoroalkyl)ethylene. The resulting products may be converted to the corresponding alkali metal or ammonium carboxylate slits which are useful as surfactants in fluoroolefin polymerizations.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: April 23, 2002
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Weiming Qiu
  • Patent number: 6133389
    Abstract: Disclosed herein are novel amorphous tetrafluoroethylene-hexafluoropropylene (TFE-HFP) dipolymers, and other copolymers containing TFE, HFP and a third monomer, many of which are more random than previous amorphous TFE-HFP copolymers, as well as a novel high productivity continuous process for making these polymers. The polymers are particularly useful in the form of coatings, films and encapsulants.
    Type: Grant
    Filed: June 6, 1997
    Date of Patent: October 17, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Colin Anolick, Viacheslav Alexandrovich Petrov, Bruce Edmund Smart, Charles Winfield Stewart, Robert Clayton Wheland, William Brown Farnham, Andrew Edward Feiring, Weiming Qiu
  • Patent number: 6077979
    Abstract: Coupling in aqueous medium of 2,4-dimethylphenol by persulfate anion or hydrogen peroxide in the presence of iron or iron compounds gives good yields of relatively pure 3,3',5,5'-tetramethyl-2,2'-biphenol.
    Type: Grant
    Filed: February 18, 1999
    Date of Patent: June 20, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Weiming Qiu
  • Patent number: 6054615
    Abstract: Selected quaternary ammonium salts containing fluoroalkyl, preferably perfluoroalkyl, groups that are stable to bases are described. They are useful as phase transfer reaction catalysts, especially in basic media.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: April 25, 2000
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Weiming Qiu
  • Patent number: 5637663
    Abstract: Disclosed herein are novel amorphous tetrafluoroethylene-hexafluoropropylene (TFE-HFP) dipolymers, and other copolymers containing TFE, HFP and a third monomer, many of which are more random than previous amorphous TFE-HFP copolymers, as well as a novel high productivity continuous process for making these polymers. The polymers are particularly useful in the form of coatings, films and encapsulants.
    Type: Grant
    Filed: February 5, 1996
    Date of Patent: June 10, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Colin Anolick, Viacheslav A. Petrov, Bruce E. Smart, Charles W. Stewart, Robert C. Wheland, William B. Farnham, Andrew E. Feiring, Weiming Qiu