Patents by Inventor Mark A. Colvin

Mark A. Colvin 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).

  • Method and apparatus for automatic densitometer alignment
    Patent number: 5208655
    Abstract: A system and method for automatically establishing the position of a printed sample relative to a densitometer. The sample is placed on a measurement table. A target incorporated with the sample causes a step change in the densitometer output signal when the target is scanned by the densitometer. By analyzing the step change, the location of the target relative to the measurement table is determined. The location of all points on the sample are known relative to the target, thus the location of all points on the sample relative to the measurement table can be determined.
    Type: Grant
    Filed: August 7, 1991
    Date of Patent: May 4, 1993
    Assignee: Graphics Microsystems, Inc.
    Inventors: James R. Cox, Mark A. Colvin
  • Hood assembly
    Patent number: D643444
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: August 16, 2011
    Assignee: Deere & Company
    Inventors: Mark A. Colvin, Jon C. Schildgen