Patents by Inventor Christopher G. Holbein

Christopher G. Holbein 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).

  • Patent number: 9322817
    Abstract: A soil tester is disclosed, and comprises a housing and a sampling apparatus. The housing includes an interior sampling chamber configured to receive a sample container. The sampling apparatus comprises a photodetector and a light source. The photodetector is mounted along a portion of the interior sampling chamber and has a variable resistance determined by a property of incident light. The light source is mounted to the interior sampling chamber in a transmissive orientation relative to the photodetector so that a beam of light can be transmitted from the light source to the photodetector through the interior sampling chamber. A display on the housing is responsive to the photodetector.
    Type: Grant
    Filed: May 6, 2014
    Date of Patent: April 26, 2016
    Assignee: Luster Leaf Products, Inc.
    Inventors: Mark B. Williams, Larry L. Holbein, Christopher G. Holbein
  • Publication number: 20140329330
    Abstract: A soil tester is disclosed, and comprises a housing and a sampling apparatus. The housing includes an interior sampling chamber configured to receive a sample container. The sampling apparatus comprises a photodetector and a light source. The photodetector is mounted along a portion of the interior sampling chamber and has a variable resistance determined by a property of incident light. The light source is mounted to the interior sampling chamber in a transmissive orientation relative to the photodetector so that a beam of light can be transmitted from the light source to the photodetector through the interior sampling chamber. A display on the housing is responsive to the photodetector.
    Type: Application
    Filed: May 6, 2014
    Publication date: November 6, 2014
    Applicant: Luster Leaf Products, Inc.
    Inventors: Mark B. Williams, Larry L. Holbein, Christopher G. Holbein
  • Patent number: D713752
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: September 23, 2014
    Assignee: Luster Leaf Products, Inc.
    Inventor: Christopher G. Holbein