Patents by Inventor Kun-Cheng Cheng

Kun-Cheng Cheng 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).

  • Low voltage DC light apparatus for a neon lamp
    Patent number: 5095251
    Abstract: A lighting apparatus for a neon lamp includes a direct current power supply with a relatively low voltage output. The direct current power supply actuates a pulse oscillator to produce a narrow pulse voltage train output. The narrow pulse voltage train output is amplified and is supplemented by the signal output of a glow control cirucit to drive the neon lamp into operation. The signal output of the glow control cirucit can be a pulsating voltage signal or a constant voltage signal to correspondingly cause the neon lamp to blink or glow constantly.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: March 10, 1992
    Inventor: Kun-Cheng Cheng