Patents by Inventor Yakov S. Freidzon

Yakov S. Freidzon 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).

  • High solids vinyl acetate-ethylene emulsions
    Patent number: 5936020
    Abstract: A vinyl acetate-ethylene copolymer emulsion having a solids content of at least about 65 percent by weight comprises about 5 to 40 percent by weight ethylene; about 60 to 95 percent by weight vinyl acetate; greater than about 3.0 percent by weight of a polyvinyl alcohol having a degree of polymerization of from about 100 to 500; about 1 to about 4 percent by weight of an ethyoxylated aliphatic surfactant having an HLB of from about 16.5 to 18.0; and about 0.2 to about 1.0 weight percent of a dispersant.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: August 10, 1999
    Assignee: Reichhold Chemicals, Inc.
    Inventor: Yakov S. Freidzon
  • High solids vinyl acetate-ethylene emulsions
    Patent number: 5629370
    Abstract: A vinyl acetate-ethylene copolymer emulsion having a solids content of at least 65 percent by weight is disclosed. Specifically, the copolymer emulsion comprises about 5 to 40 percent by weight ethylene, about 60 to 95 percent by weight vinyl acetate, about 0.8 to 2.0 percent by weight of a fully or partially hydrolyzed polyvinyl alcohol, and a mixture of nonionic ethoxylated alkyl phenol surfactants having a HLB of from about 16.0 to 16.5.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: May 13, 1997
    Assignee: Reichhold Chemicals, Inc.
    Inventor: Yakov S. Freidzon