Patents by Inventor Rodney P. Johnson

Rodney P. Johnson 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).

  • Bone-reaming system
    Patent number: 8343157
    Abstract: A bone-reaming system for use in bone cavities which allows for a less invasive and more precise surgical procedure is disclosed. An apparatus according to such a system may include a housing, a motor disposed within the housing, and a cutter attached to the motor and extendable through the aperture, wherein the housing is capable of articulating with respect to a bone cavity so as to allow the cutter to cut at least a portion of the bone cavity. A routing guide is used in conjunction with the apparatus to provide a template through which to cut preselected portions of a bone cavity. Also disclosed is a method for using such a bone-reaming system.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: January 1, 2013
    Assignee: Howmedica Osteonics Corp.
    Inventors: Christopher Scott, Joseph C. Jenkins, II, Rodney P. Johnson
  • Bone-reaming system
    Publication number: 20080294169
    Abstract: A bone-reaming system for use in bone cavities which allows for a less invasive and more precise surgical procedure is disclosed. An apparatus according to such a system may include a housing, a motor disposed within the housing, and a cutter attached to the motor and extendable through the aperture, wherein the housing is capable of articulating with respect to a bone cavity so as to allow the cutter to cut at least a portion of the bone cavity. A routing guide is used in conjunction with the apparatus to provide a template through which to cut preselected portions of a bone cavity. Also disclosed is a method for using such a bone-reaming system.
    Type: Application
    Filed: May 25, 2007
    Publication date: November 27, 2008
    Applicant: Howmedica Osteonics Corp.
    Inventors: Christopher Scott, Joseph C. Jenkins, II, Rodney P. Johnson
  • Scatter correction in reflectivity measurements
    Patent number: 5452091
    Abstract: The correction for scattered light reflected from a substrate having surface irregularities and the measurement of thin film thickness on that substrate are made using a spectrophotometer system and the Fresnel reflectance equation.
    Type: Grant
    Filed: March 22, 1993
    Date of Patent: September 19, 1995
    Assignee: Nanometrics Incorporated
    Inventor: Rodney P. Johnson