Patents by Inventor Douglas Ladd

Douglas Ladd 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).

  • Publication number: 20050228311
    Abstract: A biopsy marker introduction assembly is configured for introduction through a specimen retrieval recess into a probe cutter lumen of a handheld breast biopsy handle. Advancing the cutter causes an extending deployment rod to distally translate within an introducer tube of the introduction assembly, pushing a biopsy marker out of a distal end of the probe at a surgical biopsy site. Thereby, the surgeon is able to position the probe and effect deployment of the marker even if using the other hand to position an imaging device such as an ultrasonic transceiver.
    Type: Application
    Filed: March 31, 2004
    Publication date: October 13, 2005
    Inventors: Andrew Beckman, Rick Applegate, Michael Boehm, William Garrison, Douglas Ladd
  • Patent number: 5484024
    Abstract: An expandable and contractible covering is over the polished rod and the polished rod liner from above the polished rod liner clamp to below the stuffing box. This covering protects the environment in the event of failure of the liner or stuffing box. The covering may be quickly released from a basin below the stuffing box and contracted upward to service the stuffing box. The basin is connected to a special fitting between the stuffing box and pumping tee.
    Type: Grant
    Filed: January 3, 1995
    Date of Patent: January 16, 1996
    Inventors: Douglas Ladd, John K. Quirk