Patents by Inventor Ernst Spiess

Ernst Spiess 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).

  • Thickening agent for detergent containing preparations
    Patent number: 4774017
    Abstract: A thickening agent comprising polyether derivatives of the general formula: ##STR1## wherein R.sub.1 is a substituted or unsubstituted hydrocarbon radical or an alkylphenol radical having 10 or more carbon atoms, n is 10 to 100, m is 0 to 25, and p is 1 to 3, and wherein R.sub.2 is an alkyl radical having 8 to 30 carbon atoms. These polyether derivatives are prepared by the gradual addition of a long-chain 1,2-epoxy having a chain length of 10 to 32 carbon atoms at temperatures from 100.degree. to 200.degree. C.
    Type: Grant
    Filed: April 17, 1986
    Date of Patent: September 27, 1988
    Assignee: Akzona Incorporated
    Inventors: Karl Seibert, Klaus Neumann, Ernst Spiess, Hendrick G. Bruil
  • Thickening agent based on polyether derivatives
    Patent number: 4521326
    Abstract: A thickening agent comprising polyether derivatives of the general formula: ##STR1## wherein R.sub.1 is a substituted or unsubstituted hydrocarbon radical or an alkylphenol radical having 10 or more carbon atoms, n is 10 to 100, m is 0 to 25, and p is 1 to 3, and wherein R.sub.2 is an alkyl radical having 8 to 30 carbon atoms. These polyether derivatives are prepared by the gradual addition of a long-chain 1,2-epoxy having a chain length of 10 to 32 carbon atoms at temperatures from 100.degree. to 200.degree. C.
    Type: Grant
    Filed: February 28, 1983
    Date of Patent: June 4, 1985
    Assignee: Akzona Incorporated
    Inventors: Karl Seibert, Klaus Neumann, Ernst Spiess, Hendrik G. Bruil