Patents by Inventor Charles L. Marquardt

Charles L. Marquardt 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).

  • Dual wavelength surgical laser system
    Patent number: 6358243
    Abstract: A dual wavelength surgical laser system for performing laser surgery on living tissue with a minimum amount of collateral tissue damage is disclosed.
    Type: Grant
    Filed: August 4, 1995
    Date of Patent: March 19, 2002
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Leon Esterowitz, Charles L. Marquardt
  • Room-temperature, flashpumped, 2 micron solid state laser with high slope efficiency
    Patent number: 4969154
    Abstract: A room temperature solid state laser for producing a laser emission at a wavelength of substantially 2 microns is disclosed. In a preferred embodiment, the laser comprises: a laser crystal having a host crystal material doped with an effective percent concentration of CR.sup.3+ sensitizer ions and with an effective percent concentraton of Tm.sup.3+ activator ions; and a flashpump for exciting the laser crystal to produce a laser emission at substantially 2 microns at a slope efficiency of at least 2 percent.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: November 6, 1990
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Leon Esterowitz, Gregory J. Quarles, Charles L. Marquardt
  • Flash melting method for producing new impurity distributions in solids
    Patent number: 3940289
    Abstract: An impurity concentration profile is established in a solid by attaching solid to a heat sink and irradiating it with one or more fast laser pulses. The impurity may initially be located in a surface layer or it may be dispersed throughout the solid.
    Type: Grant
    Filed: February 3, 1975
    Date of Patent: February 24, 1976
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Charles L. Marquardt, John F. Giuliani