Patents by Inventor Peter Henry Westermann

Peter Henry Westermann 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).

  • Polychloroprene-containing blends
    Patent number: 4100123
    Abstract: Blends comprising (1) a rubber component containing polychloroprene and a defined amount of EPDM, (2) hardened extract, (3) a vulcanization agent.
    Type: Grant
    Filed: January 13, 1977
    Date of Patent: July 11, 1978
    Assignee: The British Petroleum Company Limited
    Inventor: Peter Henry Westermann
  • Blends containing modified polyethylene
    Patent number: 4098739
    Abstract: A blend of chlorosulphonated polyethylene elastomer and hardened extract obtained by blowing a gas containing free oxygen at elevated temperatures into a solvent extract of petroleum vacuum distillate or a deasphalted petroleum residue which extract boils above 350.degree. C at atmospheric pressure and contains a major proportion of aromatic hydrocarbons, said hardened extract having a saturated hydrocarbon content of not more than 10% by weight. The hardened extract serves not only to extend the chlorosulfonated polyethylene, but also improves certain physical properties of sheets made from the blend.
    Type: Grant
    Filed: March 21, 1977
    Date of Patent: July 4, 1978
    Assignee: The British Petroleum Company Limited
    Inventor: Peter Henry Westermann
  • Compositions containing polychloroprene
    Patent number: 4036799
    Abstract: Polychloroprene blends contain 3 - 300 parts by weight of polychloroprene of hardened extract. They may be produced by mixing latices.
    Type: Grant
    Filed: February 26, 1976
    Date of Patent: July 19, 1977
    Assignee: The British Petroleum Company Limited
    Inventor: Peter Henry Westermann
  • Carboxyl terminated polychloroprenes and compositions containing them
    Patent number: 3969326
    Abstract: Carboxyl terminated polychloroprene is produced by polymerizing chloroprene in the presence of a peroxide initiator having two carboxyl groups. The chloroprene is brought into contact initially with all the peroxide initiator employed. Compositions containing the carboxyl terminated polychloroprene are also disclosed.
    Type: Grant
    Filed: September 12, 1974
    Date of Patent: July 13, 1976
    Assignee: BP Chemicals International Limited
    Inventor: Peter Henry Westermann