Patents by Inventor Hendrik Theodurus van de Grampel

Hendrik Theodurus van de Grampel 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).

  • Isosorbide-based polycarbonates, method of making, and articles formed therefrom
    Patent number: 8389662
    Abstract: Disclosed herein is a polycarbonate polymer comprising: an isosorbide unit, a polysiloxane unit, and an aliphatic unit different from the isosorbide unit, wherein the isosorbide unit, polysiloxane unit, and aliphatic unit are each carbonate, or a combination of carbonate and ester units, the aliphatic unit different from the isosorbide unit is derived from an aliphatic oligomer having a molecular weight of 900 to 4000, and the calculated bio-content is greater than or equal to 40 weight percent, based on the total weight of the polycarbonate polymer.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: March 5, 2013
    Assignee: SABIC Innovative Plastics IP B.V.
    Inventors: Hans de Brouwer, Robert Dirk van de Grampel, Jan Henk Kamps, Jan-Pleun Lens, Hendrik Theodurus van de Grampel
  • ISOSORBIDE-BASED POLYCARBONATES, METHOD OF MAKING, AND ARTICLES FORMED THEREFROM
    Publication number: 20110160408
    Abstract: Disclosed herein is a polycarbonate polymer comprising: an isosorbide unit, a polysiloxane unit, and an aliphatic unit different from the isosorbide unit, wherein the isosorbide unit, polysiloxane unit, and aliphatic unit are each carbonate, or a combination of carbonate and ester units, the aliphatic unit different from the isosorbide unit is derived from an aliphatic oligomeric polyester polyol having a molecular weight of 900 to 4000, and the calculated bio-content is greater than or equal to 40 weight percent, based on the total weight of the polycarbonate polymer.
    Type: Application
    Filed: September 29, 2010
    Publication date: June 30, 2011
    Applicant: SABIC INNOVATIVE PLASTICS IP B.V
    Inventors: Hans de Brouwer, Robert Dirk van de Grampel, Jan Henk Kamps, Jan-Pleun Lens, Hendrik Theodurus van de Grampel