Patents by Inventor Karl Merkel

Karl Merkel 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).

  • Grout restoration
    Patent number: 4456728
    Abstract: In a latex coating composition comprising a pigment, a polymeric binder and water, the improvement which comprises incorporating therein about 2 to 20% by total weight of binder of an oligomer of an unsaturated ester having a molecular weight of about 1,000 to 20,000, whereby the coating upon drying is adherent to a vitreous surface but is removable therefrom with alkali. The composition is especially suited for renewing the grout between ceramic tiles.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: June 26, 1984
    Assignee: Super-Tek Products, Inc.
    Inventors: John Garuti, Sr., John Garuti, Jr., Karl Merkel
  • Manufacture of .beta.-chlorocarboxylic acid chlorides
    Patent number: 4213919
    Abstract: The manufacture of .beta.-chlorocarboxylic acid chlorides by reacting .alpha..beta.-olefinically unsaturated carboxylic acids with phosgene is advantageously carried out by first at least partially reacting the unsaturated carboxylic acid with hydrogen chloride and then carrying out the reaction with phosgene.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: July 22, 1980
    Assignee: BASF Aktiengesellschaft
    Inventors: Joachim Datow, Martin Decker, Karl Merkel, Franz Neumayr
  • 1,3,5 Tris-(2-chloroformyl-oxyethyl)-isocyanurate
    Patent number: 4085269
    Abstract: A new compound, 1,3,5-tris-(2-chloroformyl-oxyethyl)-isocyanurate.
    Type: Grant
    Filed: June 27, 1977
    Date of Patent: April 18, 1978
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenther Daumiller, Karl Merkel, Franz Neumayr, Kurt Schneider