Patents by Inventor John R. Zern

John R. Zern 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).

  • EPOXY URETHANE COATED CERAMIC ARTICLE
    Publication number: 20080248223
    Abstract: A coated ceramic article wherein the coating comprises an epoxy urethane resin is disclosed.
    Type: Application
    Filed: April 3, 2007
    Publication date: October 9, 2008
    Inventors: Ken W. Niederst, John R. Zern, Venkatachalam Eswarakrishnan, Robert B. Hodek, Terence J. Hart
  • BARRIER COATINGS
    Publication number: 20080152935
    Abstract: A barrier coating comprising the reaction product of a polymeric material and an acid is disclosed. Methods for improving the barrier of a substrate, and substrates treated according to this method are also disclosed.
    Type: Application
    Filed: March 10, 2008
    Publication date: June 26, 2008
    Applicant: PPG Industries Ohio, Inc.
    Inventors: John R. Zern, Ken W. Niederst
  • Pressurizable thermoplastic container having an exterior polyurethane layer and its method of making
    Patent number: 5681628
    Abstract: Pressurizable thermoplastic containers, such as those made from polyethylene terephthalate containing a polyurethane layer on the exterior surface thereof are disclosed. The polyurethane layer which is typically applied by a coating process provides the bottle with resistance to stress cracking. The containers are useful as refillable bottles for carbonated beverages which have a tendency to stress crack.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: October 28, 1997
    Assignee: PPG Industries, Inc.
    Inventors: Ken W. Niederst, John R. Zern, Jerome A. Seiner
  • Pressurizable thermoplastic container having an exterior polyurethane layer and its method of making
    Patent number: 5300334
    Abstract: Pressurizable thermoplastic containers, such as those made from polyethylene terephthalate containing a polyurethane layer on the exterior surface thereof are disclosed. The polyurethane layer which is typically applied by a coating process provides the bottle with resistance to stress cracking. The containers are useful as refillable bottles for carbonated beverages which have a tendency to stress crack.
    Type: Grant
    Filed: December 16, 1992
    Date of Patent: April 5, 1994
    Assignee: PPG Industries, Inc.
    Inventors: Ken W. Niederst, John R. Zern, Jerome A. Seiner