Patents by Inventor Joseph P. M. Peters

Joseph P. M. Peters 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 the preparation of random copolymers of conjugated dienes and vinyl aromatic compounds
    Patent number: 5336737
    Abstract: A process for the preparation of a random copolymer of at least one conjugated diene and at least one vinyl aromatic compound comprising reacting the monomers with the aid of an initiator based on lithium in the presence of an essentially inert solvent wherein said solvent consists of at least 60 per cent by weight of cyclopentane and the heat of reaction is withdrawn by means of reflux cooling.
    Type: Grant
    Filed: August 15, 1990
    Date of Patent: August 9, 1994
    Assignee: Shell Oil Company
    Inventors: Hendrik van Ballegooijen, Joseph P. M. Peters, Johannes T. A. Plum