Patents by Inventor Peter K. C. Yeh

Peter K. C. Yeh 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).

  • Feedback stabilized ozone generator circuit
    Patent number: 8367007
    Abstract: A control circuit is connected to sense the impedance changes in a transformer driven ozone generating circuit cause by inadvertent immersion in water of the ozone generating field and to respond by reducing the strength of the ozone generating field as result thereof. To retain some ozone generating usefulness during the presence of mist or vapors in the ozone generating field the control circuit includes a series connected operational amplifier in the feedback loop that while operating in its linear range effects a proportional feedback response to reduce the ozone output. In this manner the usefulness of ozone generation is extended during highly active periods in a pool or spa.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: February 5, 2013
    Inventors: Edward R. Otero, Peter K. C. Yeh
  • Feedback stabilized ozone generator circuit
    Publication number: 20110027139
    Abstract: A control circuit is connected to sense the impedance changes in a transformer driven ozone generating circuit cause by inadvertent immersion in water of the ozone generating field and to respond by reducing the strength of the ozone generating field as result thereof. To retain some ozone generating usefulness during the presence of mist or vapors in the ozone generating field the control circuit includes a series connected operational amplifier in the feedback loop that while operating in its linear range effects a proportional feedback response to reduce the ozone output. In this manner the usefulness of ozone generation is extended during highly active periods in a pool or spa.
    Type: Application
    Filed: January 15, 2010
    Publication date: February 3, 2011
    Inventors: Edward R. Otero, Peter K.C. Yeh