Patents by Inventor Robert P. Mastondrea

Robert P. Mastondrea 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: 5093003
    Abstract: A new copolymer composition comprising the soft segment of an aliphatic polyester and the hard segment of a highly halogenated polyurethane containing from 3 to 36 halogen atoms is disclosed. The new halogenated polyurethane copolymer membrane has high thermal stability, and good selectivity and permeability for separation of an aromatic/saturate mixture.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: March 3, 1992
    Assignee: Exxon Research and Engineering Company
    Inventors: W. S. Winston Ho, Guido Sartori, Warren A. Thaler, Bruce H. Ballinger, David C. Dalrymple, Robert P. Mastondrea
  • Patent number: 5028685
    Abstract: A new copolymer composition comprising the soft segment of an aliphatic polyester and the hard segment of a highly halogenated polyurethane containing from 3 to 36 halogen atoms is disclosed. The new halogenated polyurethane copolymer membrane has high thermal stability, and good selectivity and permeability for separation of an aromatic/saturate mixture.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: July 2, 1991
    Assignee: Exxon Research & Engineering Company
    Inventors: W. S. Winston Ho, Guido Sartori, Warren A. Thaler, Bruce H. Ballinger, David C. Dalrymple, Robert P. Mastondrea
  • Patent number: 5019666
    Abstract: The present invention is a method for separating aromatics from saturates using a non-porous polycarbonate membrane. In a preferred embodiment, the polycarbonate membrane may be crosslinked.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: May 28, 1991
    Assignee: Exxon Research and Engineering Company
    Inventors: Guido Sartori, W. S. Winston Ho, David W. Savage, Robert E. Noone, Robert P. Mastondrea