Patents by Inventor Soo Y. Cha

Soo Y. Cha 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).

  • Patent number: 5300836
    Abstract: A flame rod structure is comprised of a silicon alloy or is coated by a silicon material on a metal flame rod. A compensating circuit applies the A.C. bias to the D.C. bias of the flame rod structure, generates the excitation frequency signal and mixes the excitation frequency with the D.C. bias to produce a reference frequency according to the flame sensing of the flame rod structure, whereby a calorific step is accurately detected to control the optimum heating of a burner or a combustion apparatus.
    Type: Grant
    Filed: June 29, 1992
    Date of Patent: April 5, 1994
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Soo Y. Cha