Patents by Inventor James Edward Flowers

James Edward Flowers 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).

  • Surface acoustic wave filters
    Patent number: 6246148
    Abstract: Filter structures are described consisting of a plurality of individual surface acoustic wave (SAW) resonators formed of inter-digitated metallic combs on a common piezoelectric substrate. Areas of metallisation (1, 2, 3, 4) between the combs provide means to connect the filter in a circuit, e.g. in a mobile telephone unit to act as a filter with a passband in the 800 to 2200 MHz range. The individual SAW resonators differ from one another and are interconnected in ladder and/or balanced bridge arrangements.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: June 12, 2001
    Assignees: Clarisay, Inc., Sawcom Limited
    Inventors: James Edward Flowers, James Heighway