Patents by Inventor Robert J. Murray

Robert J. Murray 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).

  • Patent number: 4369914
    Abstract: A box with a hinged lid is formed from a single sheet of cut and scored paperboard, the box being in the form of a tray having front, back and end walls and a lid which are reinforced by multiple plies of material so as to increase their rigidity, with a substantial thickness at the top edge of the front wall on which the lid is adapted to rest when closed, and with certain of the walls being reinforced by inserts, and the hinge structure joining the back wall and the multi-ply lid being such that the lid tends to close but may be readily held in an open position so as to permit access to the body of the box which is filled with a product such as cigars or similar products.
    Type: Grant
    Filed: June 4, 1981
    Date of Patent: January 25, 1983
    Assignee: Federal Paper Board Company, Inc.
    Inventors: Joseph Langston, Jr., Robert J. Murray
  • Patent number: 4357584
    Abstract: A surface acoustic wave bandpass filter consists of input and output interdigital transducers (IP, OP) with an interposed track changing multistrip array (MSA). A conventional broadband array (MSA) is divided into two groups of strips with respect to a center of symmetry (C) separated by different distances along the input track (T1) and the output track (T2) such that the array (MSA) suppresses a predetermined frequency. If the input and output transducers (IP, OP) both have a double electrode configuration, electrode separation .lambda.o/4, providing a fundamental passband at a corresponding frequency f.sub.o and an equal amplitude passband at the third harmonic 3f.sub.o, then a separation difference of .lambda.o/6 between the groups of the array (MSA) in the two tracks (T1, T2) can suppress the third harmonic passband in the filter output. The two groups of the multistrip array may be further sub-divided to suppress more than one frequency (FIG. 5).
    Type: Grant
    Filed: February 20, 1981
    Date of Patent: November 2, 1982
    Assignee: U.S. Philips Corporation
    Inventors: Robert J. Murray, Richard F. Mitchell
  • Patent number: D245095
    Type: Grant
    Filed: November 19, 1975
    Date of Patent: July 19, 1977
    Inventor: Robert J. Murray