Patents by Inventor James E. Copenhafer

James E. Copenhafer 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).

  • Liquid and soil repellent compositions for fibers
    Patent number: 9657436
    Abstract: Included are compositions for fibers which include a clay nanoparticle and a wax. The composition provides the fibers with oil and water repellency.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: May 23, 2017
    Assignee: INVISTA North America S.รก.r.l.
    Inventors: Isaac K Iverson, James E Copenhafer, Charles N Kelcey, Michelle A Ivy
  • LIQUID AND SOIL REPELLENT COMPOSITIONS FOR FIBERS
    Publication number: 20150004351
    Abstract: Included are compositions for fibers which include a clay nanoparticle and a wax. The composition provides the fibers with oil and water repellency.
    Type: Application
    Filed: January 31, 2013
    Publication date: January 1, 2015
    Applicant: INVISTA NORTH AMERICA S.A R.L.
    Inventors: Isaac K. Iverson, James E. Copenhafer, Charles N. Kelcey, Michelle A. IVY
  • High temperature stable polyelectrolytes having backbone aromatic groups
    Patent number: 8574462
    Abstract: The invention relates to polyelectrolytes having backbone aromatic groups, and in particular to aromatic backbone group polyelectrolytes having high levels of sulfonation as well as cross-linking functionality. Preferably the polyelectrolyte backbone is free of linear alkyl groups.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: November 5, 2013
    Assignee: Arkema Inc.
    Inventors: James T. Goldbach, James E. Copenhafer, David A. Mountz, Scott R. Gaboury
  • HIGH TEMPERATURE STABLE POLYELECTROLYTES HAVING BACKBONE AROMATIC GROUPS
    Publication number: 20100197816
    Abstract: The invention relates to polyelectrolytes having backbone aromatic groups, and in particular to aromatic backbone group polyelectrolytes having high levels of sulfonation as well as cross-linking functionality. Preferably the polyelectrolyte back-bone is free of linear alkyl groups.
    Type: Application
    Filed: December 5, 2007
    Publication date: August 5, 2010
    Applicant: Arkema Inc.
    Inventors: James T. Goldbach, James E. Copenhafer, David A. Mountz, Scott Gaboury