Patents by Inventor Guenther John

Guenther John 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).

  • Curable compositions containing color indicators for indicating the curing progress
    Patent number: 8961879
    Abstract: The invention relates to curable compositions which are prepared from polyol components containing one or more polyols and isocyanate components containing one or more isocyanates, which compositions contain at least one indicator having at least one quinonoid group, which indicator signifies the degree of curing by a change of color. The invention also relates to a method for indicating the progress of curing in such curable compositions.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: February 24, 2015
    Assignee: Mankiewicz Gebr. & Co. GmbH & Co. KG
    Inventors: Guenther John, Stefanie Ehmke (nee Behrens Brammertz)
  • Curable compositions containing color indicators for indicating the curing progress
    Patent number: 8815608
    Abstract: Curable compositions are prepared from polyol components containing one or more polyols and isocyanate components containing one or more isocyanates, which compositions contain at least one indicator having at least one quinonoid group, which indicator signifies the degree of curing by a change of color. A method is also provided for indicating the progress of curing in such curable compositions.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: August 26, 2014
    Assignee: Mankiewicz Gebr. & Co. GmbH & Co. KG
    Inventors: Guenther John, Stefanie Ehmke
  • CURABLE COMPOSITIONS CONTAINING COLOR INDICATORS FOR INDICATING THE CURING PROGRESS
    Publication number: 20120283373
    Abstract: Curable compositions are prepared from polyol components containing one or more polyols and isocyanate components containing one or more isocyanates, which compositions contain at least one indicator having at least one quinonoid group, which indicator signifies the degree of curing by a change of color. A method is also provided for indicating the progress of curing in such curable compositions.
    Type: Application
    Filed: July 20, 2012
    Publication date: November 8, 2012
    Applicant: MANKIEWICZ GEBR. & CO. GMBH & CO. KG
    Inventors: Guenther John, Stefanie Ehmke (nee Behrens Brammertz)
  • CURABLE COMPOSITIONS CONTAINING COLOR INDICATORS FOR INDICATING THE CURING PROGRESS
    Publication number: 20110024690
    Abstract: The invention relates to curable compositions which are prepared from polyol components containing one or more polyols and isocyanate components containing one or more isocyanates, which compositions contain at least one indicator having at least one quinonoid group, which indicator signifies the degree of curing by a change of color. The invention also relates to a method for indicating the progress of curing in such curable compositions.
    Type: Application
    Filed: March 19, 2009
    Publication date: February 3, 2011
    Applicant: Mankiewicz Gebr. & Co, GmbH & Co, KG
    Inventors: Guenther John, Stefanie Ehmke (nee Beherns Brammertz)
  • Manufacture of particulate olefin polymers
    Patent number: 4007321
    Abstract: Particulate olefin polymers are prepared by catalytic polymerization of monoolefins in an auxiliary liquid containing the monomers to be polymerized in dissolved form and the particulate polymer product in suspended form. The reaction mixture is recycled in a loop to which the starting materials are fed and from which the particulate polymer formed is removed. The essential features are (a) that a side stream is branched off from the loop, (b) that the side stream is caused to pass through a separating zone in which particulate olefin polymer is separated by centrifugal acceleration at temperatures and pressures in the same range as present in the loop and (c) that the separated particulate olefin polymer is discharged through flashing means.
    Type: Grant
    Filed: February 20, 1975
    Date of Patent: February 8, 1977
    Assignee: BASF Aktiengesellschaft
    Inventors: Norbert Scholz, Georg Friedrich Vock, Kurt Erdmann, Guenther John, Hans Frielingsdorf, Wolfgang Gruber, Heinz Mueller-Tamm