Patents by Inventor Iren Barta

Iren Barta 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).

  • Transdermal laminated pharamaceutical compositions having prolonged effect and process for the preparation thereof
    Patent number: 4814174
    Abstract: The invention relates to a transdermal laminated pharmaceutical composition (plaster) having prolonged effect, wherein one or more storing layer(s) comprising the active ingredient, an ethylene/vinyl acetate copolymer regulating layer and an adhesive layer are applied onto the carrier.The pharmaceutical composition is prepared by coupling a carrier comprising the active ingredient with a regulating layer consisting of an ethylene/vinyl acetate copolymer foil having a vinal acetate content of 2-40 molar %. The foil is previously irradiated in a thickness of 100-300 .mu.m with a high-energy irradiation in a dose of 1-15 Mrad--preferably with electrone radiation--and thereafter stretched at 80.degree.-90.degree. C. to a thickness of 2-200 .mu.m.The system comprising the carrier and the regulating layer is subsequently coupled with an adhesive layer.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: March 21, 1989
    Assignees: Egis Gyogyszergyar, Muanyagipari Kutato Intezet
    Inventors: Iren Barta, Pal Fekete, Laszlo Pallos, Gabor Kovacs, Lajos Mahr