Patents by Inventor Rudolf Keller

Rudolf Keller 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).

  • Patent number: 3940515
    Abstract: An improved dry process for the finishing of organic material, particularly textile material made from natural or synthetic organic fibres ist described, which comprises applying to an inert carrier preparations containing at least one textile finishing agent transferring at atmospheric pressure above 80.degree.C to the organic material, optionally a bonding agent stable below 250.degree.C, water and/or an organic solvent; drying of the said preparation; bringing into contact then of the treated side of the inert carrier with the surface of the organic material to be finished; subjecting thereupon of carrier and the material to be finished, optionally under mechanical pressure, to a heat treatment at a temperature of at least 80.degree.C until the said textile finishing agent has transferred to the material to be finished, and separating of the finished material from the carrier.
    Type: Grant
    Filed: December 20, 1972
    Date of Patent: February 24, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Fritz Mayer, Rudolf Keller, Werner Kunz
  • Patent number: 3935150
    Abstract: Disclosed is an aqueous acid solution or suspension of a preparation as well as the production thereof for the permanent finishing of fibre materials, especially dyed carpets, to render them antistatic, dirt-repellent and, optionally, antimicrobial, which aqueous preparation contains:A. 10 to 20 per cent by weight of at least one antistatic agent,B. 3 to 35 per cent by weight of a stabilised, aqueous non-film-forming dispersion of polystyrene,C. 1 to 6 percent by weight of at least one acid, especially o-phosphoric acid, andD. 0 to 5 percent by weight of further components, such as an antimicrobic agent and a solubility-promoting agent.
    Type: Grant
    Filed: June 4, 1974
    Date of Patent: January 27, 1976
    Assignee: Ciba-Geigy Corporation
    Inventors: Josef Oxe, Rudolf Keller