Patents by Inventor Erich Surma

Erich Surma 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).

  • Cooling liquid with corrosion-inhibiting and cavitation-inhibiting additives
    Patent number: 4404113
    Abstract: A corrosion-inhibiting and cavitation-inhibiting cooling liquid based on polyhydric alcohols such as glycerol and glycols, is described. As the corrosion-inhibiting and cavitation-inhibiting agent, it contains a combination of corrosion inhibitors and sulfamido compounds. The new cooling liquid is particularly suitable for use in internal combustion engines.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: September 13, 1983
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Heinrich Peters, Erich Surma
  • De-icing composition on the basis of ethylene glycol and/or propylene glycol, water and urea
    Patent number: 4283297
    Abstract: Products for rapidly liberating areas covered by ice and/or snow are described, which products are composed as follows (weight %, relative to the total weight of all components):60 to 79% by weight of propyleneglycol and0 to 5% by weight of ethyleneglycol or70 to 85% by weight of ethyleneglycol and0 to 10% by weight of propyleneglycol.There are added in both cases5 to 15% by weight of water5 to 20% by weight of urea and1 to 5% by weight of monohydric aliphatic alcohols having from 1 to 7 carbon atoms.The products are harmless, biologically degradable, non-corrosive and of low flammability.
    Type: Grant
    Filed: July 30, 1979
    Date of Patent: August 11, 1981
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Heinrich Peters, Erich Surma