Patents by Inventor Qinghong Fu Adkins

Qinghong Fu Adkins 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).

  • High inherent viscosity polymers and fibers therefrom
    Patent number: 8263221
    Abstract: Disclosed are processes for preparing polyareneazole polymers characterized as providing polymer solutions having an inherent viscosity of at least about 22 dl/g at 30° C. at a polymer concentration of 0.05 g/dl in methane sulfonic acid. Polyareneazoles, filaments and yarns are also disclosed.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: September 11, 2012
    Assignees: Magellan Systems International, LLC, E.I. du Pont de Nemours and Company
    Inventors: Doetze Jakob Sikkema, David J. Rodini, Qinghong Fu Adkins, Steven R. Allen, Christopher William Newton
  • Thermal processes for increasing polyareneazole inherent viscosities
    Patent number: 7754846
    Abstract: Disclosed are thermal processes for increasing polyareneazole inherent viscosities.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: July 13, 2010
    Assignees: E. I. du Pont de Nemours and Company, Magellan Systems International, LLC
    Inventors: Qinghong Fu Adkins, Doetze Jakob Sikkema, Steven R. Allen, David J. Rodini
  • Processes for increasing polymer inherent viscosity
    Patent number: 7683122
    Abstract: Disclosed are processes for preparing polyareneazole polymers including contacting a molar excess of a free base in water with a terephthalic acid salt to form an aqueous mixture, adjusting the pH to precipitate a monomer complex, contacting the monomer complex with metal powder, and polymerizing the monomer complex. Polyareneazoles, filaments and yarns are also disclosed.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: March 23, 2010
    Assignees: E. I. du Pont de Nemours and Company, Magellan Systems International, LLC
    Inventors: Doetze Jakob Sikkema, David J. Rodini, Qinghong Fu Adkins, Steven R. Allen, Georg Valentin Martin, Ralf Demuth, Michael Schelhaas
  • Processes for preparing high inherent viscosity polyareneazoles using metal powders
    Patent number: 7671171
    Abstract: Disclosed are processes for preparing polyareneazole polymers that include contacting, in polyphosphoric acid, azole-forming monomers and metal powder, the metal powder added in an amount of from about 0.05 to about 0.9 weight percent, based on the total weight of the azole-forming monomers, and reacting the azole-forming monomers to form the polyareneazole polymers. Polyareneazoles, filaments and yarns are also disclosed.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: March 2, 2010
    Assignees: E. I. du Pont de Nemours and Company, Magellan Systems International, LLC
    Inventors: Doetze Jakob Sikkema, David J. Rodini, Qinghong Fu Adkins, Steven R. Allen