Patents by Inventor Joseph Francis Keenan

Joseph Francis Keenan 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: 20030199165
    Abstract: A method for manufacturing surgical blades from either a crystalline or poly- crystalline material, preferably in the form of a wafer, is disclosed. The method includes preparing the crystalline or poly-crystalline wafers by mounting them and machining trenches into the wafers. The methods for machining the trenches, which form the bevel blade surfaces, include a diamond blade saw, laser system, ultrasonic machine, and a hot forge press. The wafers are then placed in an etchant solution which isotropically etches the wafers in a uniform manner, such that layers of crystalline or poly-crystalline material are removed uniformly, producing single or double bevel blades. Nearly any angle can be machined into the wafer which remains after etching. The resulting radii of the blade edges is 5-500 nm, which is the same caliber as a diamond edged blade, but manufactured at a fraction of the cost.
    Type: Application
    Filed: March 10, 2003
    Publication date: October 23, 2003
    Applicant: Becton, Dickinson and Company
    Inventors: Joseph Francis Keenan, Vadim Mark Daskal, James Joseph Hughes
  • Patent number: 6171324
    Abstract: A corneal marker and a method of using a corneal marker are disclosed. The corneal marker includes a handle having a head coupled thereto. The inferior surface of the head includes a set of protuberances which form marking surfaces adapted to simultaneously engage corneal tissue. The marking surfaces form opposing sets of marks which allow a surgeon to form an incision of precise length and width. An alignment line on the superior and/or front surface of the marker facilitates the positioning thereof. A method of performing clear corneal surgery following the application of markings to the cornea is also provided.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: January 9, 2001
    Assignee: Becton, Dickinson and Company
    Inventors: Dana Michael Cote, Joseph Francis Keenan, Michael Joseph Murphy, Edwin G. Lee