Patents by Inventor Wilfred J. Baxter, Jr.

Wilfred J. Baxter, Jr. 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).

  • Thermal mass flow sensor with improved sensitivity and response time
    Patent number: 6595049
    Abstract: A thermal mass flow sensor having superior sensitivity and response time includes a flow sensor tube defining an interior channel for fluid flow between input and output ends, a heating element in thermal communication with a portion of the flow sensor tube for heating a fluid flowing through the tube, a pair of spatially compact thermal sensors located at the upstream and downstream ends of the heating element for sensing the temperature of the fluid flowing through the tube at their respective locations and providing a signal representative of the fluid temperature at those locations, and a pair of thermal grounding members on the flow sensor tube, yet positioned at specified locations substantially beyond the heated portion of the tube, for establishing reference temperatures for the fluid flowing therethrough at those locations.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: July 22, 2003
    Assignee: MKS Instruments, Inc.
    Inventors: Thomas O. Maginnis, Jr., Wilfred J. Baxter, Jr.