Patents by Inventor Steven J. Hawrylik

Steven J. Hawrylik 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).

  • Suspension method for producing embryoid bodies, compositions and methods related thereto
    Publication number: 20040096967
    Abstract: Suspension methods and compositions for effecting large-scale in vitro differentiation of mammalian embryonic stem cells are provided, as well as methods comprising the subject large-scale in vitro differentiation methods.
    Type: Application
    Filed: October 31, 2003
    Publication date: May 20, 2004
    Applicant: Pfizer Inc
    Inventors: Timothy D. Gryseels, John E. Hambor, Steven J. Hawrylik, Marsh L. Roach
  • Ethylated avermectins
    Patent number: 5387509
    Abstract: Avermectins wherein one or both of the 3'- and 3"-positions of the oleandrose disaccharide moiety is substituted by an ethoxy rather than a methoxy group, process for their preparation; and their use as antiparasitic agents.
    Type: Grant
    Filed: June 26, 1989
    Date of Patent: February 7, 1995
    Assignee: Pfizer Inc.
    Inventors: Steven J. Hawrylik, S. Edward Lee