Patents by Inventor Jozsef Gerendas

Jozsef Gerendas 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).

  • Dyeing process using quaternary ammonium salt as retarder
    Patent number: 4052159
    Abstract: Special quaternary ammonium salts derived from triaminoalkyl derivatives of hexahydrotriazine for use as retarders in the dyeing of anionic polyacrylonitrile fibers with basic dyes.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: October 4, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Ernst Fuerst, Jozsef Gerendas, Rudolf Rokohl, Rolf Fikentscher, Herbert Helfert
  • Process for dyeing cellulose fibers
    Patent number: 4036587
    Abstract: A process for dyeing cellulose fibers and mixtures of the same with synthetic fibers in an aqueous liquor by the exhaustion method in the presence of a water-soluble polymer of acrylic acid or an alkali metal salt or ammonium salt thereof, an alkali metal or ammonium salt of a copolymer of maleic acid and styrene, maleic acid and a vinyl ester or maleic acid and a vinyl ether as a dyeing assistant in an amount of from 0.05 to 2% by weight based on the material being dyed. Level dyeings are obtained and mixtures of fibers can be dyed in a single liquor.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: July 19, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans Wolf, Jozsef Gerendas, Ernst Wilhelm
  • Quaternary ammonium salts
    Patent number: 3963714
    Abstract: Special quaternary ammonium salts of 2,4,6-tris-(.omega.-dialkylamino-alkyleneamino)-triazines and 2,4,6-tris-(.omega.-dialkylaminoalkoxy)-triazines and their use in dyeing anionic polyacrylonitrile fibers with basic dyes; these special derivatives of triazine are particularly effective retarders.
    Type: Grant
    Filed: December 6, 1974
    Date of Patent: June 15, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Jozsef Gerendas, Herbert Fleischer, Rolf Fikentscher, Herbert Helfert