Patents by Inventor Thomas E. Fehlman

Thomas E. Fehlman 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).

  • Mass flow meter with symmetrical sensors
    Patent number: 7021136
    Abstract: A mass flow meter employs discrete chip-type temperature sensors to sense a fluid flow rate. The sensor can be a semiconductor chip such as SiC or silicon, or thin film tungsten on an AlN substrate. The sensors can be distributed symmetrically with respect to the conduit through which the fluid flows, and can be connected in a four-sensor bridge circuit for accurate flow rate monitoring. An output from the mass flow meter can be used to control the fluid flow.
    Type: Grant
    Filed: October 27, 2004
    Date of Patent: April 4, 2006
    Assignee: Heetronix
    Inventors: Craig A. Vincze, James Gibson, James D. Parsons, Thomas E. Fehlman
  • Mass flow meter with chip-type sensors
    Patent number: 6883370
    Abstract: A mass flow meter employs discrete chip-type temperature sensors to sense a fluid flow rate. The sensor can be a semiconductor chip such as SiC or silicon, or thin film tungsten on an AlN substrate. The sensors can be distributed symmetrically with respect to the conduit through which the fluid flows, and can be connected in a four-sensor bridge circuit for accurate flow rate monitoring. An output from the mass flow meter can be used to control the fluid flow.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: April 26, 2005
    Assignee: Heetronix
    Inventors: Craig A. Vincze, James Gibson, James D. Parsons, Thomas E. Fehlman
  • Mass flow meter with chip-type sensors
    Publication number: 20040035201
    Abstract: A mass flow meter employs discrete chip-type temperature sensors to sense a fluid flow rate. The sensor can be a semiconductor chip such as SiC or silicon, or thin film tungsten on an AlN substrate. The sensors can be distributed symmetrically with respect to the conduit through which the fluid flows, and can be connected in a four-sensor bridge circuit for accurate flow rate monitoring. An output from the mass flow meter can be used to control the fluid flow.
    Type: Application
    Filed: June 27, 2003
    Publication date: February 26, 2004
    Applicant: HEETRONIX
    Inventors: Craig A. Vincze, James Gibson, James D. Parsons, Thomas E. Fehlman