Patents by Inventor Harald Grimm, deceased

Harald Grimm, deceased 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).

  • Perfluoroolefin and perfluoroparaffin mixture and process for making same
    Patent number: 4225404
    Abstract: Straight chain perfluoroolefins compounds of medium length with terminal or double bonds and a minor proportion of trifluoromethyl side chains or mixtures of such perfluoroolefins with perfluoro paraffins of equal chain length and corresponding structure, the perfluoroolefins being present in the mixture in an amount of 40 to 70%. The compounds are valuable as highly reactive intermediate products in the production of surface active agents. The compounds are made by subjecting a highly fluorinated organic compound to degradation by means of a high energy radiation of a density of 0.3 to 3.0 W/cm.sup.2 effected in a radiation chamber which has been subjected to a preceding rinsing with an inert gas or with a monomeric highly fluorinated organic compound.
    Type: Grant
    Filed: August 24, 1978
    Date of Patent: September 30, 1980
    Assignee: Akademie der Wissenschaften der DDR
    Inventors: Peter Dietrich, Gunter Engler, Armin Ferse, Harald Grimm, deceased, Udo Gross, Dietmar Handte, Klaus Lunkwitz, Ulrich Muller, Dietrich Prescher, Jurgen Schulze