Patents by Inventor Karl Markert

Karl Markert 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).

  • Extended lifetime harmonic generator
    Patent number: 6697390
    Abstract: A laser system includes a high reflector and an output coupler that define a laser oscillator, which produces a fundamental beam. A harmonic generator is positioned to receive at least a portion of the fundamental beam and produce a harmonic beam. The harmonic generator is configured to operate at a temperature selected to provide a least amount of change of a selected parameter of the harmonic beam for the longest period of time. Harmonic beam parameters can include the size and location of the harmonic beam waist, and the divergence of the harmonic beam.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: February 24, 2004
    Assignee: Spectra Physics Lasers, Inc.
    Inventors: James D. Kafka, Alan B. Petersen, Karl Markert
  • Extended lifetime harmonic generator
    Publication number: 20030147433
    Abstract: A laser system includes a high reflector and an output coupler that define a laser oscillator, which produces a fundamental beam. A harmonic generator is positioned to receive at least a portion of the fundamental beam and produce a harmonic beam. The harmonic generator is configured to operate at a temperature selected to provide a least amount of change of a selected parameter of the harmonic beam for the longest period of time. Harmonic beam parameters can include the size and location of the harmonic beam waist, and the divergence of the harmonic beam.
    Type: Application
    Filed: February 1, 2002
    Publication date: August 7, 2003
    Inventors: James D. Kafka, Alan B. Petersen, Karl Markert
  • Process for removing ozone-depleting and/or climate-active fluorinated compounds from a gas stream and application of the process
    Patent number: 6110436
    Abstract: A process is provided for removing fluorinated compounds, such as perfluorinated or partially fluorinated C1 to C4 hydrocarbons, NF.sub.3 and SF.sub.6, out of a gas by passing this gas through gamma alumina, wherein the temperature of the gamma alumina is between ambient temperature and 600.degree. C. The gas stream and the gamma alumina are anhydrous. The fluorinated compounds chemically react with the gamma alumina to result in a gas containing a diminished quantity of fluorinated compounds and an aluminum fluoride containing composition.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: August 29, 2000
    Inventors: Christoph Scholz, Walter Holzinger, Karl Markert, Eckard Kopatzki