Patents by Inventor Stephen Roy Hessel

Stephen Roy Hessel 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).

  • Valves, Valved Fluid Transfer Devices and Ambulatory Infusion Devices Including The Same
    Publication number: 20080234639
    Abstract: Valves, valved fluid transfer devices and ambulatory infusion devices including the same.
    Type: Application
    Filed: March 24, 2008
    Publication date: September 25, 2008
    Inventors: David Christopher Antonio, Stephen Roy Hessel, Scott R. Gibson, Christian Michael Merot, Lawrence Scott Ring, Norbert William Frenz, Stephen D. Das
  • Suction collection system
    Patent number: 4111204
    Abstract: A suction collection system embodying a disposable drainage receiving assembly including a flexible plastic bag sealed to and depending from a lid for positioning within a rigid canister, the open upper end of the canister being sealed by the lid. The lid includes a drainage fixture communicating with the interior of the bag. A suction fixture, also on the lid, communicates with the canister exteriorly of the bag and with the interior of the bag through a restricted fluid path. The suction fixture communication with the canister exteriorly of the bag can be either direct or through a well having a fluid path to the exterior of the bag and a set of apertures opening into the bag. An air pervious-liquid impervious path is orientated solely between the suction fixture and the interior of the bag for an exclusion of liquid and a slight restriction of air flow relative to the flow from the canister exteriorly of the bag.
    Type: Grant
    Filed: October 7, 1976
    Date of Patent: September 5, 1978
    Assignee: C. R. Bard, Inc.
    Inventor: Stephen Roy Hessel