Patents by Inventor Karl Hacker

Karl Hacker 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).

  • Process for the manufacture of light color terpenephenols
    Patent number: 4081425
    Abstract: Process for the manufacture of light color terpenephenols by reaction of terpene hydrocarbons with phenols in the presence of a heavily acidic cation exchange resin or a bleaching earth and in the presence of phenol condensation products.
    Type: Grant
    Filed: March 9, 1977
    Date of Patent: March 28, 1978
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Manfred Gscheidmeier, Karl Hacker