Patents by Inventor Robert L. Darras

Robert L. Darras 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: 5336555
    Abstract: A slash resistant composite material and surgical glove made of such material. The composite material comprises a polymeric matrix having embedded therein hard material whiskers which are oriented randomly in the matrix. The whiskers consist of a material selected from the group consisting of silicon carbide, carbon and mixtures thereof. The diameter of the whiskers ranges from 0.00015 to 0.0005 inches and the length of the whiskers ranges from 0.0625 to 0.125 inches.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: August 9, 1994
    Inventors: Robert L. Darras, Tau-chao Fan
  • Patent number: 4886049
    Abstract: A medical instrument cover having an elongated, generally tubular sheath of an elastomeric material, open at both ends, configured to fit on an endoscope and defining an interior surface. A filament is attached to the interior surface of the sheath and functions to separate the sheath in an elongate direction. In this manner, the sheath is easily removed from the medical instrument which it is covering.In a second embodiment, two strips of material located generally opposite one another are attached to the interior surface. The sheath is applied to a medical instrument such as an endoscope. When it is desired to remove the sheath from the endoscope, the strips of material are grasped and pulled along the length of the endoscope thus removing the cover from said endoscope.
    Type: Grant
    Filed: May 17, 1988
    Date of Patent: December 12, 1989
    Inventor: Robert L. Darras
  • Patent number: 4678668
    Abstract: Disclosed is a composition and a method for reducing soft tissue swelling and pain. A composition comprising of proteolytic enzyme and a transfer vehicle is topically applied to the injured bodily area. Relief is rapid.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: July 7, 1987
    Assignee: MD Associates
    Inventor: Robert L. Darras