Patents by Inventor Sean M. Sullivan

Sean M. Sullivan 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).

  • Phospholipid analogue vesicle
    Patent number: 5419914
    Abstract: Delivery vehicle formulations comprising active agents encapsulated within microparticles which include a succinimidyl moiety extending externally from a lipid molecule therein are capable of the cytoplasmic or nuclear cell delivery of intact encapsulated active agents.
    Type: Grant
    Filed: August 24, 1994
    Date of Patent: May 30, 1995
    Assignee: Vestar, Inc.
    Inventor: Sean M. Sullivan
  • Encapsulation process
    Patent number: 5227170
    Abstract: A process for the encapsulation of oligonucleotides in liposomes includes the suspending of liposomes containing a divalent cation in a solution containing an oligonucleotide and having an osmolarity of a less than that of the internal aqueous phase.
    Type: Grant
    Filed: June 20, 1990
    Date of Patent: July 13, 1993
    Assignee: Vestar, Inc.
    Inventor: Sean M. Sullivan