Patents by Inventor Manfred Pelster

Manfred Pelster 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: 4588413
    Abstract: Improvements in the fastness properties of substrates dyed with reactive dyestuffs are achieved by a dyeing after-treatment with an agent which is the reaction product polyethyleneimine and a bifunctional alkylating agent.
    Type: Grant
    Filed: July 19, 1984
    Date of Patent: May 13, 1986
    Assignee: Cassella Aktiengesellschaft
    Inventors: Karl-Heinz Keil, Fritz Engelhardt, Ulrich Greiner, Klaus Sternberger, Manfred Pelster
  • Patent number: 4587338
    Abstract: Perfluoroalkyl esters of anthranilic acids, of the formula (1) ##STR1## in which R.sub.1 is perfluoroalkyl or perfluoroalkoxy-perfluoroalkyl, R.sub.2 is hydrogen, alkyl or phenyl, R.sub.3 is one or more non-chromophoric radicals, such as fluorine, chlorine, bromine, lower alkyl, lower alkoxy, acylamino, carboxyl or functionally modified carboxyl groups, sulfo or functionally modified sulfo groups, or phenyl, X is the radical of an aliphatic or aromatic monocarboxylic or polycarboxylic acid, the radical of a halogen-active heterocyclic compound or an alkylaminocarbonyl or arylaminocarbonyl radical, m is an integer from 1 to 6, preferably 1 to 4 and n is an integer from 1 to 3. These compounds are useful for soil-repellent finishing of textile material.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: May 6, 1986
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Erich Schinzel, Manfred Pelster