Patents Represented by Law Firm Jones, Day, Revis & Pogue
  • Patent number: 5426339
    Abstract: A novel surface acoustic wave device that includes a multiple track transducer having a first portion for generating a transverse symmetrical mode acoustic wave and a second portion for receiving only a transverse nonsymmetrical surface acoustic wave such that substantially no direct coupling occurs between the first and second portions of the multiple track transducer and where reflector gratings are mode changing gratings that reflect the transverse symmetrical wave as a transverse nonsymmetrical wave that is received by the second portion of the multiple track transducer thereby substantially reducing undesired in-band surface acoustic wave transducer responses as well as spurious bulk responses and allowing a narrow passband to be obtained with a short structure when compared with the prior art structures.
    Type: Grant
    Filed: April 1, 1994
    Date of Patent: June 20, 1995
    Assignee: RF Monolithics, Inc.
    Inventor: Peter V. Wright
  • Patent number: D408163
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: April 20, 1999
    Assignee: HON Technology Inc.
    Inventor: Ogden R. Olson