Patents by Inventor Rick D. Vargason

Rick D. Vargason 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).

  • Liquid in situ multiport monitoring system
    Patent number: 4993271
    Abstract: A method and apparatus for determining the level of particulate contamination in a plurality of liquid sources. The apparatus comprises first and second control valves each having a number of valve elements equal in number to the number of liquid sources, with analytical equipment to determine the amount of particulate contamination in a fluid sample, disposed therebetween. Samples are withdrawn from and returned to the same liquid source. A common valve controller insures that the control valves are maintained at a common valve setting. The analytical equipment is capable of detecting particulate contaminants as small as 0.3 micron.
    Type: Grant
    Filed: December 12, 1988
    Date of Patent: February 19, 1991
    Assignee: Micron Technology, Inc.
    Inventor: Rick D. Vargason