Patents by Inventor Fredi Wolter

Fredi Wolter 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).

  • Preparations for the oiling of leather
    Patent number: 5683611
    Abstract: Aqueous dispersions containing special aminopropionic acid derivatives and co-oligomers based on fatty crotonates are suitable for the oiling of leather. The leathers thus treated are distinguished by high resistance to washing and cleaning and by impermeability to water.
    Type: Grant
    Filed: July 12, 1996
    Date of Patent: November 4, 1997
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rudolf Zauns-Huber, Fredi Wolter, Guenter Uphues, Gilbert Schenker
  • Degreasing process
    Patent number: 5525120
    Abstract: The invention is a process for degreasing animal skins in which the animal skin to be degreased is contacted with a mixture of a predominantly saturated C.sub.12 -C.sub.18 fatty alcohol ethoxylate having an average of not more than 15 EO groups and a predominantly saturated C.sub.6-10 fatty alcohol ethoxylate having an average of not more than 3 EO groups.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: June 11, 1996
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rudolf Zauns-Huber, Alfred Meffert, Klaus Herrmann, Wolfgang Prinz, Fredi Wolter
  • Use of guerbet alcohols for preventing fatty spew on leather
    Patent number: 5476517
    Abstract: The present invention relates to a composition and process for inhibiting fatty spew on leather comprising an oiling component in combination with a Guerbet alcohol having the general formula I:R.sup.1 --CH(CH.sub.2 OH)--R.sup.2 (I)wherein R.sup.1 and R.sup.2, independently of one another represent an alkyl group containing from 6 to 12 carbon atoms, and wherein the total number of carbon atoms per Guerbet alcohol molecule is in the range from 16 to 24.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: December 19, 1995
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rudolf Zauns-Huber, Emil Ruscheinsky, Fredi Wolter
  • Use of nonionic organic dialkyl compounds for preventing fatty spew on leather
    Patent number: 5468255
    Abstract: The present invention relates to a fatty spew inhibiting composition for leather comprising an oiling component in combination with a dialkyl ether additive corresponding to general formula II:R.sup.3 --O--R.sup.4 (II)wherein R.sup.3 and R.sup.4, independently of one another represent an alkyl group containing 1 to 32 carbon atoms, the alkyl group being saturated or unsaturated, linear or branched, and the dialkyl ether additive having a total number of carbon atoms per ether molecule in the range from 14 to 36.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: November 21, 1995
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Rudolf Zauns-Huber, Emil Ruscheinsky, Fredi Wolter