Patents by Inventor Dragomir Simic

Dragomir Simic 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).

  • Process for the production of flame-resistant phenolic resin foam plastics
    Patent number: 4001148
    Abstract: Flame-resistant foam plastics are prepared by mixing with an aqueous alkaline condensed phenol-formaldehyde resin solution an expanding agent such as hexane and an acidic curing agent after which the mixture is foamed and permitted to cure. Useful acidic curing agents, comprise mixtures of a strong inorganic or organic acid, a glycol and phosphoric acid.
    Type: Grant
    Filed: March 3, 1975
    Date of Patent: January 4, 1977
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Dragomir Simic, Heinz-Ulrich Zupancic, Martin Cherubim
  • Process for the manufacture of chip boards using condensation resins as binders and product
    Patent number: 3968308
    Abstract: The present invention relates to a process for the manufacture of chip boards especially multi-layer chip boards, using condensation resins as binders, and the products thereof the improvement including wetting powdered adhesive particles before applying the adhesive particles to wood chips.
    Type: Grant
    Filed: December 16, 1974
    Date of Patent: July 6, 1976
    Assignee: Deutsche Texaco Aktiengesellschaft
    Inventors: Adolf Buschfeld, Manfred Gramse, Dragomir Simic