Patents by Inventor Peter Singstad

Peter Singstad 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 production of polyolefins in an autoclave reactor
    Patent number: 5965674
    Abstract: An improved process for the production of polyolefins in an autoclave reactor having several reaction zones operated at a pressure of 100 to 300 MPa and a temperature of 100 to 300.degree. C. is disclosed. Dunng operation, temperatures are measured continuously inside the autoclave reactor at specific points distributed along the reactor length, each of said measured temperatures is compared with a corresponding preset temperature and the detected deviation between each pair of preset and measured temperatures is used in regulating the amount of monomer and initiator fed into the autoclave through several feed inlets distributed along the reactor length, in order to minimize the temperature deviations and thus obtain an improved control of the polymerization process.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: October 12, 1999
    Assignee: Borealis Holding A/S
    Inventors: Oivind Moen, Mangor Lien, Lars Bjornar Lyngmo, Kurt Strand, Havard Nordhus, Peter Singstad, Jan Kjeldstad