Patents by Inventor John Maxwell Deacon

John Maxwell Deacon 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).

  • Acoustic surface wave filters
    Patent number: 4030050
    Abstract: An acoustic surface wave filter for use as an intermediate frequency filter in a P.A.L. color television receiver comprising input and output transducers each having fingers of conductive material supported on a piezoelectric substrate the fingers of each transducer being electrically connected to a pair of terminal pads so that the fingers connected to one pad interleave with the fingers connected to the other pad, the transducers being mutually offset in a direction orthogonal to the direction of acoustic surface wave propagation and coupled by means of a multistrip coupler.
    Type: Grant
    Filed: September 25, 1975
    Date of Patent: June 14, 1977
    Assignee: Plessey Handel und Investments A.G.
    Inventors: John Maxwell Deacon, James Heighway
  • Acoustic surface wave filters having bifurcated members with connecting links
    Patent number: 3984791
    Abstract: An acoustic surface wave filter which includes a strip member of a piezoelectric material having input and output interdigital transducers formed on a major surface thereof, each of the interdigital transducers including two interlaced rows of parallel spaced-apart elongated members, each of the elongated members of at least one of the rows being bifurcated to provide two parallel limbs, the limbs of each of the bifurcated members being connected together by means of at least one connecting link.
    Type: Grant
    Filed: June 24, 1975
    Date of Patent: October 5, 1976
    Assignee: Plessey Handel und Investments A.G.
    Inventor: John Maxwell Deacon