Patents by Inventor Tzeng J. Suen

Tzeng J. Suen 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).

  • Process for preparing polyalkoxymethylmelamines
    Patent number: 5017699
    Abstract: Polyalkoxymethylmelamines are prepared by reacting melamine with formaldehyde and then alkylating the resultant polymethylolmelamine with a lower monohydric alcohol, having 1 to 4 carbon atoms, especially methanol, in the presence of a solid "superacid" catalyst.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: May 21, 1991
    Inventor: Tzeng J. Suen