Patents by Inventor Charles T. Gregg

Charles T. Gregg 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).

  • Spring-actuated, retractable-bladed surgical scalpel
    Patent number: 6949109
    Abstract: A surgical scalpel having a replaceable, spring-actuated, retractable cutting blade which may be locked in the operating or deployed position and returned to its safety position using a single digit on one hand.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: September 27, 2005
    Assignee: Innovative Surgical Technology, Inc.
    Inventors: Mark L. Iske, Timothy C. Thompson, Charles T. Gregg
  • Spring-actuated, retractable-bladed surgical scalpel
    Publication number: 20040111106
    Abstract: A surgical scalpel having a replaceable, spring-actuated, retractable cutting blade which may be locked in the operating or deployed position and returned to its safety position using a single digit on one hand.
    Type: Application
    Filed: August 22, 2003
    Publication date: June 10, 2004
    Inventors: Mark L. Iske, Timothy C. Thompson, Charles T. Gregg
  • Three-piece retractable-bladed knife
    Patent number: 5475925
    Abstract: A three-piece knife having a replacable, retractable cutting blade, which may be locked either in the operating or deployed position, or in a retracted or safety position, by using a single digit on one hand, is described. Safety of hospital personnel and medical waste-disposal personnel is achieved in the surgical scalpel embodiment of the three-piece knife without loss of function or convenience of the scalpel.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: December 19, 1995
    Inventors: Philip H. Newman, B. Michael Jackson, Charles T. Gregg, David Platts
  • Retractable-bladed surgical scalpel
    Patent number: 5201748
    Abstract: A surgical scalpel having a replacable, retractable cutting blade which may be locked in the operating or deployed position using a single digit on one hand is described. Safety of hospital personnel and medical waste disposal personnel is achieved without loss of function or convenience of the scalpel.
    Type: Grant
    Filed: June 1, 1992
    Date of Patent: April 13, 1993
    Inventors: Philip H. Newman, B. Michael Jackson, Charles T. Gregg, David Platts
  • Biological particle identification apparatus
    Patent number: 4884886
    Abstract: An apparatus and method for making multiparameter light scattering measurements from suspensions of biological particles is described. Fourteen of the sixteen Mueller matrix elements describing the particles under investigation can be substantially individually determined as a function of scattering angle and probing radiations wavelength, eight elements simultaneously for each of two apparatus configurations using an apparatus which incluees, in its simplest form, two polarization modulators each operating at a chosen frequency, one polarizer, a source of monochromatic electromagnetic radiation, a detector sensitive to the wavelength of radiation employed, eight phase-sensitive detectors, and appropriate electronics. A database of known biological particle suspensions can be assembled, and unknown samples can be quickly identified once measurements are performed on it according to the teachings of the subject invention, and a comparison is made with the database.
    Type: Grant
    Filed: January 26, 1989
    Date of Patent: December 5, 1989
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Gary C. Salzman, Charles T. Gregg, W. Kevin Grace, Richard D. Hiebert