Patents by Inventor Shang J. Chiou

Shang J. Chiou 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).

  • Polymer powder stability
    Patent number: 5606015
    Abstract: A method for improved polymer powder stability is provided, particularly spray-dried emulsion polymers, by spray-drying emulsion polymers with selected low HLB surfactants. Stable spray-dried emulsion polymers are particularly useful as cement modifiers.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: February 25, 1997
    Assignee: Rohm and Haas Company
    Inventors: Shang J. Chiou, Miao-Hsun L. Sheng
  • Grafted polymer composition
    Patent number: 5563187
    Abstract: Aqueous emulsions of grafted polymer compositions are provided. The grafted component of these compositions has two or more polymeric substituents. The aqueous emulsions of grafted polymer compositions are particularly useful as cement modifiers.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: October 8, 1996
    Assignee: Rohm and Haas Company
    Inventors: Shang J. Chiou, Miao-Hsun L. Sheng