Patents by Inventor Harald E. t'Sas

Harald E. t'Sas 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).

  • Building composition containing 3-alkoxy-2-hydroxypropylhydroxyethyl cellulose
    Patent number: 4939192
    Abstract: A new nonionic, water-soluble cellulose ether, i.e., hydroxyethyl cellulose substituted with an alkylglycidyl radical wherein alkyl moiety is a straight or branched chain alkyl group containing 1 to 10 carbon atoms, and a building composition based on hydraulic or synthetic binder containing the new nonionic, cellulose ether are disclosed. The building composition has superior physical properties as compared to prior compositions containing other cellulose derivatives.
    Type: Grant
    Filed: April 17, 1989
    Date of Patent: July 3, 1990
    Assignee: Aqualon Company
    Inventor: Harald E. t'Sas
  • 3-alkoxy-2-hydroxypropylhydroxyethylcellulose and building composition containing the same
    Patent number: 4845207
    Abstract: A new nonionic, water-soluble cellulose ether, i.e., 3-alkoxy-2-hydroxypropylhydroxyethyl cellulose radical wherein alkyl moiety is a straight or branched chain alkyl group containing 1 to 10 carbon atoms, and a building composition based on hydraulic or synthetic binder containing the new nonionic, cellulose ether are disclosed. The building composition has superior physical properties as compared to prior compositions containing other cellulose derivatives.
    Type: Grant
    Filed: June 17, 1987
    Date of Patent: July 4, 1989
    Assignee: Aqualon Company
    Inventor: Harald E. t'Sas