Patents by Inventor Gerhard Maerker

Gerhard Maerker 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 preparation of branched chain fatty acids and esters
    Patent number: 4371469
    Abstract: Complex mixtures of branched chain fatty acids or esters in which the yield of monomeric branched chain products are substantially increased and the yield of polymeric products substantially decreased are prepared by heating monounsaturated fatty acids or esters in the presence of certain combinations of catalysts.
    Type: Grant
    Filed: April 28, 1981
    Date of Patent: February 1, 1983
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Thomas A. Foglia, Theodore Perlstein, Yoshio Nakano, Gerhard Maerker
  • Process for imparting water repellancy to fibrous cellulosic textile materials by acylating with isopropenyl esters
    Patent number: 4152115
    Abstract: Water repellancy is imparted to fibrous cellulosic textile material by applying to it, for a very short period of time, an isopropenyl ester containing a catalytic amount of an acid catalyst and then heat curing the treated material. Excellent water repellancy is obtained at a very low degree of substitution and a high degree of retention of tensile strength.
    Type: Grant
    Filed: February 15, 1978
    Date of Patent: May 1, 1979
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Leonard S. Silbert, Samuel Serota, Gerhard Maerker