Patents by Inventor Peter L. Graham

Peter L. Graham 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: 5776125
    Abstract: The present invention provides a piercing member adapted for use with a flow channel. The piercing member has a penetrating member for piercing a solid closure, and is retained to the flow channel, but still allows fluid to flow through the flow channel while retained to the flow channel.
    Type: Grant
    Filed: April 24, 1995
    Date of Patent: July 7, 1998
    Assignee: Baxter International Inc.
    Inventors: Thomas E. Dudar, Peter L. Graham, Steven C. Jepson
  • Patent number: 5601711
    Abstract: A filter device or apparatus is provided for the separation of materials, especially biomaterials from a fluid sample, under a force such as centrifugation, positive pressure, vacuum, or gravity. The device comprises two or more in-line tubular elements, one or more of which is a module that houses a filter media. The elements have complementary connection structures (e.g., elastomeric seal, O-ring, threads, Luer fittings, compression fittings, bayonet fittings, snap fittings, and the like) such that they can be assembled or reassembled in a train to form a conduit structure for leak-proof passage of a fluid sample volume. The assembly can be disassembled for collection and processing of retentate and filtrate material resulting from the filtration.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: February 11, 1997
    Assignee: Gelman Sciences Inc.
    Inventors: Eric Sklar, Peter L. Graham, Jane Larson
  • Patent number: 5411499
    Abstract: A cannula assembly adapted to pierce a solid or unslit closure is disclosed and includes a blunt cannula and a piercing member held in cooperation with or contained within the flow channel of the cannula. Generally, the piercing member includes a tip capable of piercing an unslit stopper or closure and a means to temporarily retain the piercing member from the cannula and prevent inadvertent disengagement of the piercing member from the blunt cannula.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: May 2, 1995
    Assignee: Baxter International Inc.
    Inventors: Thomas E. Dudar, Peter L. Graham, Steven C. Jepson
  • Patent number: 5211638
    Abstract: A pre-slit injection site includes a housing with a flow path therethrough. A first end of the housing carries a pre-slit septum. A second end of the housing carries a coupling component to adapt the site to standard vials. The coupling component, a vial adapter, includes an adapter spike with openings allowing for the drainage of fluid in the vial through the spike and into the injection site. The vial adapter is provided with a skirt housing unit which protects the adapter spike in manufacturing and use. The skirt housing unit also provides features to lockingly engage the adapter with injection site to standard vials, despite dimensional variations in vial closures. Another embodiment of the coupling component is a spike having a barb feature capable of insertion into a standard vial or port and resisting disengagement.A blunt cannula is usable with the injection site combined with the coupling components.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: May 18, 1993
    Assignee: Baxter International Inc.
    Inventors: Thomas E. Dudar, Steven C. Jepson, Robert P. Dobbie, Peter L. Graham, Michael J. Finley, Richard A. Rollins
  • Patent number: 5100394
    Abstract: A pre-slit injection site includes a housing with a flow path therethrough. A first end of the housing carries a pre-slit septum. A second end of the housing carries a coupling component to adapt the site to standard vials. The coupling component, a vial adapter, includes an adapter spike with openings allowing for the drainage of fluid in the vial through the spike and into the injection site. The vial adapter is provided with a skirt housing unit which protects the adapter spike in manufacturing and use. The skirt housing unit also provides features to lockingly engage the adapter with injection site to standard vials, despite dimensional variations in vial closures. Another embodiment of the coupling component is a spike having a barb feature capable of insertion into a standard vial or port and resisting disengagement.A blunt cannula is usable with the injection site combined with the coupling components.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: March 31, 1992
    Assignee: Baxter International Inc.
    Inventors: Thomas E. Dudar, Steven C. Jepson, Robert P. Dobbie, Peter L. Graham, Michael J. Finley, Richard A. Rollins
  • Patent number: D327318
    Type: Grant
    Filed: October 10, 1989
    Date of Patent: June 23, 1992
    Assignee: Baxter International Inc.
    Inventors: Thomas E. Dudar, Michael J. Finley, Peter L. Graham