Patents by Inventor Siegfried Janocha

Siegfried Janocha 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).

  • Polyethylene terephthalate composition and shaped articles
    Patent number: 4139518
    Abstract: Disclosed is a composition, comprising a calcium-containing polyethylene terephthalate polymer and from about 0.01 to 1% by weight of silica obtained by a pyrogenic process, as well as a method of producing same and improved shaped articles made from said composition.
    Type: Grant
    Filed: July 22, 1977
    Date of Patent: February 13, 1979
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Siegfried Janocha, Manfred Unger, Klaus Hoheisel
  • Stretched tubular film of polyethylene terephthalate
    Patent number: 4042565
    Abstract: This invention relates to a stretched, shrinkable, tubular film of polyethylene terephthalate which has a lower initial point of shrinkage, higher shrinking values, and improved weldability, in which part of the ethylene glycol component is replaced by about 0.5 to 10 mole per cent of bis-phenol-A-bis-(2-hydroxyethyl)-ether.
    Type: Grant
    Filed: December 18, 1975
    Date of Patent: August 16, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Klaus Hoheisel, Siegfried Janocha