Patents by Inventor Thomas J. Lechner

Thomas J. Lechner 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).

  • Smart refrigerant sensor
    Patent number: 5820262
    Abstract: A Refrigerant Sensor is provided that provides within a common assembly pressure, temperature and superheat measurements and calculations with respect to a refrigerant material. The Refrigerant Sensor includes a pressure transducer for measuring the pressure of the refrigerant material and a temperature transducer for measuring the temperature of the refrigerant material. The pressure and temperature measurements are used by a microprocessor to calculate the superheat value of the refrigerant material. The microprocessor is within the common assembly. The Refrigerant Sensor can send and receive information from the network and also calibrate the pressure and temperature measurements.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: October 13, 1998
    Assignee: Johnson Service Company
    Inventor: Thomas J. Lechner
  • Quantum user interface module
    Patent number: D394218
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: May 12, 1998
    Assignee: Johnson Service Company
    Inventors: Steven E. Keto, Herbert W. Mueller, Thomas J. Lechner, Jennifer J. Clark-Keller, George Rudich, Jr., Robert E. Hillmer