Patents by Inventor Richard Lao

Richard Lao 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).

  • Saturable core POTS/DSL filter
    Publication number: 20030190039
    Abstract: This invention relates generally to electronic filter circuits on POTS (Plain Old Telephone System) lines and more particularly to an electronic filter circuit which contains a magnetically saturable inductor switch. The switch enables multiple POTS device micro-filter combinations to be simultaneously active without the drawbacks of the prior art.
    Type: Application
    Filed: April 4, 2002
    Publication date: October 9, 2003
    Applicant: Sumida America Technologies
    Inventors: Stephen Michael Sedio, Richard Lao
  • Magnetically activated electric filter apparatus
    Publication number: 20030043996
    Abstract: This invention relates generally to electronic filter circuits on POTS (Plain Old Telephone System) lines and more particularly to an electronic filter circuit which contains a magnetically activated switch. The switch enables multiple POTS device micro-filter combinations to be simultaneously active without the drawbacks of the prior art.
    Type: Application
    Filed: September 5, 2001
    Publication date: March 6, 2003
    Inventors: Stephen Michael Sedio, Richard Lao