Patents by Inventor Verhelst Gabriel Albert

Verhelst Gabriel Albert 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 making a PIPA-polyol
    Patent number: 7674853
    Abstract: Process for preparing a polyol comprising particulate material in dispersed form by reacting an MDI-based polyisocyanate and a polyol having an equivalent weight of up to 400 in a relative amount such that the number of NCO-groups is 70-100% of the number of OH-groups in said polyol having an equivalent weight of up to 400, the reaction being carried out in a polyol having an equivalent weight of 500 or more. The polyols are claimed as well.
    Type: Grant
    Filed: April 11, 2007
    Date of Patent: March 9, 2010
    Assignee: Huntsman International LLC
    Inventors: Verhelst Gabriel Albert, Yu Jianming