Patents by Inventor Piotr Krzyzanowski

Piotr Krzyzanowski 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).

  • Patent number: 8058377
    Abstract: Phosphate-containing polycarboxylate polymer dispersant compositions of the invention comprise a polymer made from polyoxyalkylene groups, acrylic acid groups, mono-ester groups, and optionally di-ester and tri-ester groups, all in specific molar ratios. The polymer dispersants of the invention achieve quick mix-in dispersibility, particularly within hydratable cementitious compositions such as concrete, in comparison with polycarboxylate polymer dispersants that do not contain phosphate groups, while having improved initial slump as well as slump retention compared to phosphate-containing polymers of the prior art.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: November 15, 2011
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Izabela Goc-Maciejewska, Byong-wa Chun, Piotr Krzyzanowski