Patents by Inventor Hendrik Theoderus van de Grampel

Hendrik Theoderus 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).

  • METHOD OF MAKING A MOLDED ARTICLE
    Publication number: 20110123764
    Abstract: In various embodiments, a method of making a molded article comprises forming a composite into a desired shape for the article, and cutting the formed article to form desired openings in the article. The composite comprises a top layer that comprises a blend of a first polycarbonate comprising repeat units of dimethyl bisphenol cyclohexane and a second polycarbonate comprising repeat units of bisphenol A, said second polycarbonate being different from said first polycarbonate, wherein the repeat units of dimethyl bisphenol cyclohexane are present in an amount of at least 50 weight percent relative of the total repeat units in the top layer, and (b) a second layer comprising a bisphenol-A polycarbonate, said second layer being joined with the top layer.
    Type: Application
    Filed: February 1, 2011
    Publication date: May 26, 2011
    Applicant: SABIC INNOVATIVE PLASTICS IP B.V.
    Inventors: Sapna Blackburn, Kwan Hongladarom, Mike M. Laurin, Jan Pleun Lens, Hendrik Theoderus van de Grampel