Patents by Inventor Friedrich Klippel

Friedrich Klippel 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).

  • Bleaching cotton-containing fabrics with hypochlorite at elevated temperatures
    Patent number: 4622037
    Abstract: Cotton-containing fabrics are bleached with hypochlorite in an aqueous alkaline liquor at elevated temperatures by a process in which bleaching is carried out at from 80.degree. to 110.degree. C. in the course of from 30 seconds to 25 minutes in the presence of a water-soluble polyhydroxy compound, as a readily oxidizable substance, in an amount of from 0.5 to 20 g/l.
    Type: Grant
    Filed: May 3, 1985
    Date of Patent: November 11, 1986
    Assignee: BASF Aktiengesellschaft
    Inventors: Werner Streit, Dieter Bassing, Karlheinz Gebert, Friedrich Klippel, Norbert Leppert
  • Process for the production of formaldehyde-free finishing agents for cellulosic textiles and the use of such agents
    Patent number: 4295846
    Abstract: Process for the production of formaldehyde-free finishing agents for textiles containing or consisting of cellulose which is based on the reaction of urea or symmetrically disubstituted urea with glyoxal in the presence of buffer salts and alcohols at a pH of below 7, buffered mixtures of 4,5-hydroxyethyleneureas or N,N'-disubstituted 4,5-dihydroxyethyleneureas partially etherified in 4- and 5-positions being formed.
    Type: Grant
    Filed: March 18, 1980
    Date of Patent: October 20, 1981
    Assignee: BASF Aktiengesellschaft
    Inventors: Harro Petersen, Panemangalore S. Pai, Friedrich Klippel, Friedrich Reinert
  • Process for easy-care finishing cellulosics
    Patent number: 3957431
    Abstract: Process for the easy-care finishing of cellulosics involving low formaldehyde release, wherein the cellulosics, after having been impregnated with a solution of aminoplast-forming substances and dried, are sprayed with a solution of urea.
    Type: Grant
    Filed: March 28, 1975
    Date of Patent: May 18, 1976
    Assignee: BASF Aktiengesellschaft
    Inventors: Panemangalore S. Pai, Harro Petersen, Friedrich Klippel