Patents by Inventor Leland H. Dao

Leland H. Dao 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: 6066104
    Abstract: A device for measuring cervical dilation includes a glove having middle finger an index finger, a thumb, and a palm area. A tube is attached to the index finger and extends from near the tip of the index finger along the length of the index finger towards. A calibrated line has a first end attached near the tip of the index finger and extends through the tube. The calibrated line has a second end attached to the thumb, or hangs free with a tether handled. A latch adjacent the palm area prevents unintended movement of the calibrated line. In another embodiment, an indicator arm has a first end attached to the middle finger. A flexible gauge arm is attached to the index finger. A gauge attached to the gauge arm is positioned adjacent to the palm area, and has calibrated markings. The second end of the indicator arm overlays the gauge. In a third embodiment, a meter rod has a first end within a guide tube. A measuring line is attached to the meter rod and extends out of the first end of the guide tube.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: May 23, 2000
    Inventors: Leland H. Dao, Christopher S. Miura, Michael James Bradley
  • Patent number: 5666686
    Abstract: A body, which may have a tubular or dome-like shape with an open top and bottom, has a wall with one or more elongated slots extending along the wall from the top toward the bottom. A cauterizer blade may be drawn through a slot in any suitable orientation to wipe debris from the blade. A mounting, such as a pressure-sensitive adhesive sheet, may be used to attach the body to a surgical drape. A slot may have two parallel inner edges for wiping or scraping the cauterizer blade. The distance between the inner edges defines the slot width, which should be approximately equal to the width of the cauterizer blade to be cleaned. The sides of the slot may be beveled to form chisel-like inner edges that enhance the wiping action. At the top of the body the slot may also have a "V"-shaped notch to guide the cauterizer blade into the slot. The adhesive sheet may be attached to the open bottom of the dome-shaped body.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 16, 1997
    Assignee: Graphic Controls Corporation
    Inventor: Leland H. Dao
  • Patent number: 5471705
    Abstract: A body, which may have a tubular or dome-like shape with an open top and bottom, has a wall with one or more elongated slots extending along the wall from the top toward the bottom. A cauterizer blade may be drawn through a slot in any suitable orientation to wipe debris from the blade. A mounting, such as a pressure-sensitive adhesive sheet, may be used to attach the body to a surgical drape. A slot may have two parallel inner edges for wiping or scraping the cauterizer blade. The distance between the inner edges defines the slot width, which should be approximately equal to the width of the cauterizer blade to be cleaned. The sides of the slot may be beveled to form chisel-like inner edges that enhance the wiping action. At the top of the body the slot may also have a "V"-shaped notch to guide the cauterizer blade into the slot. The adhesive sheet may be attached to the open bottom of the dome-shaped body.
    Type: Grant
    Filed: May 2, 1994
    Date of Patent: December 5, 1995
    Assignee: Devon Industries, Inc.
    Inventor: Leland H. Dao