Patents by Inventor Robert Meyer Zu Westram

Robert Meyer Zu Westram 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).

  • Patent number: 8138243
    Abstract: The invention relates to the use of a UV absorber in the production of transparent polyamide products or polyamide molded parts. The use according to the invention is characterized in that at least one UV absorber having at least one substituted benzoyl group is added to a polyamide molding compound, by which means melts of polyamide molding compounds comprising these UV absorbers leave no visible blooming on surfaces with which they come into contact during the production or processing of polyamide products. Particularly preferred polyamide molding compounds produced according to the use according to the invention comprise PA 6I/MXDI, PA MACM12, PA MACMI/MACMT/12 or PA 6I/6T/MACMI/MACMT/PACMI/PACMT/12 as well as one or more UV absorbers in the form of a dibenzoylmethane compound and/or an aminohydroxybenzoyl benzoic acid ester.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: March 20, 2012
    Assignee: EMS-Patent AG
    Inventors: Friedrich Severin Bühler, Robert Meyer Zu Westram
  • Publication number: 20090085019
    Abstract: The invention relates to a polyamide molding compound melt comprising a UV absorber for the production of transparent plastic products or molded parts, which have a reduced transmission for light up to a wavelength of 400 nm. The polyamide molding compound melt according to the invention is characterized in that it comprises at least one UV absorber, of which at least one UV absorber is a compound having at least one substituted benzoyl group, wherein the polyamide molding compound melt comprising this at least one UV absorber causes no visible blooming on surfaces with which it comes into contact during processing. Particularly preferred polyamide molding compound melts comprise PA 6I/MXDI, PA MACM12, PA MACMI/MACMT/12 or PA 6I/6T/MACMI/MACMT/PACMI/PACMT/12 as well as one or more UV absorbers in the form of a dibenzoylmethane compound and/or an aminohydroxybenzoyl benzoic acid ester.
    Type: Application
    Filed: May 16, 2008
    Publication date: April 2, 2009
    Applicant: EMS-PATENT AG
    Inventors: Friedrich Severin BUHLER, Robert Meyer zu WESTRAM