Patents by Inventor Brian D. Guenther

Brian D. Guenther 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: 20220244169
    Abstract: Ellipsometer, polarimeter, reflectometer and spectrophotometer systems including one or more wavelength modifiers which convert wavelengths provided by a source of electromagnetic radiation to different wavelengths for use in investigating a sample, and/or which a detector thereof can detect.
    Type: Application
    Filed: September 16, 2021
    Publication date: August 4, 2022
    Applicant: J.A. WOOLLAM CO., INC.
    Inventors: Ping He, Martin M. Liphardt, Jeremy A. Van Derslice, Craig M. Herzinger, Jeffrey S. Hale, Brian D. Guenther, Duane E. Meyer, Stefan Schoeche, James D. Welch
  • Patent number: 10775298
    Abstract: Ellipsometers and polarimeters and the like having at least one rotating element which is driven by a motor that comprises air bearings.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: September 15, 2020
    Assignee: J.A. WOOLLAM CO., INC.
    Inventors: Christopher D. Hassler, Galen L. Pfeiffer, Jeffrey S. Hale, Craig M. Herzinger, Brian D. Guenther, Brooks A. Hitt
  • Patent number: 9347768
    Abstract: A system for monitoring, in real time, relatively large samples as they are caused to pass by an ellipsometer or the like system, and method of its use.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: May 24, 2016
    Assignee: J.A. WOOLLAM CO., INC
    Inventors: Galen L. Pfeiffer, Blaine D. Johs, Brian D. Guenther, Martin M. Liphardt, Jeffrey S. Hale
  • Patent number: 7535566
    Abstract: An electromagnetic beam chromatic shifting and directing means for use in reflectively directing a spectroscopic beam of electromagnetic radiation while simultaneously de-emphasizing intensity in a first range of wavelengths, (eg. the Visible wavelengths), and simultaneously relatively emphasizing intensity in another wavelength range, (eg. UV wavelengths).
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: May 19, 2009
    Assignee: J.A. Woollam Co., Inc.
    Inventors: Blaine D. Johs, Galen L. Pfeiffer, Jeffrey S. Hale, Christopher A. Goeden, Brian D. Guenther, Martin M. Liphardt, Ping He
  • Patent number: 7327456
    Abstract: Disclosed are improvements in ellipsometer and the like systems capable of operating in the Vacuum-Ultra-Violet (VUV) to Near Infrared (NIR) wavelength range, and methodology of use.
    Type: Grant
    Filed: June 6, 2005
    Date of Patent: February 5, 2008
    Assignee: J.A. Woollam Co., Inc.
    Inventors: John A. Woollam, Steven E. Green, Ping He, Blaine D. Johs, Craig M. Herzinger, Galen L. Pfeiffer, Brian D. Guenther, Martin M. Liphardt, Gerald T. Cooney
  • Patent number: 7274450
    Abstract: A sample sequestering system which allows access to a subspace in a chamber encompassed generally enclosed space, for use in entering and removing a sample when the subspace is opened to atmosphere. Sufficient purge gas is flowed from within the generally enclosed space into the subspace discourage atmospheric contaminates from entering into the subspace. Contained within the generally enclosed space is a spectrophotometer, ellipsometer or polarimeter or the like system which operates at wavelengths, (eg. UV), which are adversely affected, (eg. absorbed), by typical atmospheric contents.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: September 25, 2007
    Assignee: J.A. Woollam Co., Inc
    Inventors: Steven E. Green, Ping He, Galen L. Pfeiffer, Brian D. Guenther, Gerald T. Cooney, John A. Woollam, Martin M. Liphardt, Blaine D. Johs, Craig M. Herzinger
  • Patent number: 7136162
    Abstract: Disclosed is a system and method of aligning, preferably by an automated procedure, a beam of electromagnetic radiation provided by a source thereof so that it approaches a sample at a specific location upon its surface, at a known angle, then reflects therefrom and enters a data detector.
    Type: Grant
    Filed: October 12, 2003
    Date of Patent: November 14, 2006
    Assignee: J.A. Woollam Co., Inc.
    Inventors: Martin M. Liphardt, Craig M. Herzinger, Brian D. Guenther, Steven E. Green, Galen L. Pfeiffer, Ping He
  • Patent number: 6982792
    Abstract: Disclosed are improvements in ellipsometer and the like systems capable of operating in the Vacuum-Ultra-Violet (VUV) to Near Infrared (NIR) wavelength range, and methodology of use.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: January 3, 2006
    Assignee: J.A. Woollam Co. INC
    Inventors: John A. Woollam, Steven E. Green, Ping He, Blaine D. Johs, Craig M. Herzinger, Galen L. Pfeiffer, Brian D. Guenther, Martin M. Liphardt