Patents by Inventor Tibor G. Mahr

Tibor G. Mahr 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).

  • Crosslinked ethylene/vinyl acetate copolymer film and process for treating same
    Patent number: 4416749
    Abstract: A surface treatment for ethylene/vinyl acetate copolymer film resulting in an elastomeric, heat sealable film which retains its transparency after release from 200 percent elongation. The treatment comprises irradiation and controlled surface hydrolysis and, optionally, subsequent attachment of mineral particulates to the surface of the film with or without the use of coupling agents.
    Type: Grant
    Filed: August 30, 1982
    Date of Patent: November 22, 1983
    Assignee: E. I. Du Pont de Nemours & Co.
    Inventors: Tibor G. Mahr, Pallatheri M. Subramanian
  • Elastomeric film
    Patent number: 4374898
    Abstract: Ethylene/vinyl acetate copolymer film containing 35 to 50 percent copolymerized vinyl acetate by weight is irradiated with 0.5 to 16 megarads of high energy radiation, contacted with an alcoholic solution of a titanate or silane coupling agent, and subsequently contacted with an alcoholic finely divided mineral particulate slurry. The resulting film is elastomeric, heat sealable, transparent upon relaxation after being stretched and free of surface tack.
    Type: Grant
    Filed: June 25, 1981
    Date of Patent: February 22, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Tibor G. Mahr
  • Elastomeric film
    Patent number: 4370212
    Abstract: A surface treatment for ethylene/vinyl acetate copolymer film resulting in an elastomeric, heat sealable film which retains its transparency after release from 200 percent elongation. The treatment comprises irradiation and controlled surface hydrolysis and, optionally, subsequent attachment of mineral particulates to the surface of the film with or without the use of coupling agents.
    Type: Grant
    Filed: May 1, 1981
    Date of Patent: January 25, 1983
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Tibor G. Mahr, Pallatheri M. Subramanian