Patents by Inventor Sally A. Landis

Sally A. Landis 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).

  • SENSING AND MEASURING CIRCUIT EMPLOYING A POSITIVE-TEMPERATURE-COEFFICIENT SENSING DEVICE
    Publication number: 20030048189
    Abstract: A sensing and measuring circuit, employing a positive-temperature-coefficient sensing device, for detecting the presence and approximately measuring the quantity or concentration of heat-absorptive substances such as water. May be used for sensing a quantity of rainfall or irrigation water, or for detecting and giving an alarm or initiating remediation for leakage of water, oil, or other fluids from confinement to an unauthorized location.
    Type: Application
    Filed: September 12, 2001
    Publication date: March 13, 2003
    Applicant: LANSENSE, LLC
    Inventors: Sally A. Landis, Donald G. Landis
  • SENSING AND SWITCHING CIRCUIT EMPLOYING A POSITIVE-TEMPERATURE-COEFFICIENT SENSING DEVICE
    Publication number: 20030048190
    Abstract: A sensor and associated circuitry for sensing and reacting to the presence of a fluid or other material having heat capacity. A positive-temperature-coefficient device initiates a switching step when the amount of heat-capacity material reaches a certain level, or is totally absent. The switching step may trigger an alarm or control circuit to rectify the fluid level.
    Type: Application
    Filed: September 13, 2001
    Publication date: March 13, 2003
    Applicant: LANSENSE, LLC
    Inventors: Donald G. Landis, Sally A. Landis