Patents by Inventor Keith A. Walker

Keith A. Walker 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).

  • Publication number: 20030164031
    Abstract: In a system for remote monitoring of vehicle tire pressure, a system and method for identifying tire location. A tire pressure monitor for each tire includes a sensor for sensing tire pressure, a transmitter for transmitting a signal representative of the sensed tire pressure, and a sensor for sensing an impact to the tire and for actuating the transmitter to transmit a tire pressure signal in response. A receiver for mounting on the vehicle receives the tire pressure signals. A controller for mounting on the vehicle communicates with the receiver and is for use in conveying tire pressure and location information to a user. When the vehicle is stationary, each tire is struck in a preselected sequence so that each received tire pressure signal is automatically associated with one of the plurality of tire locations.
    Type: Application
    Filed: June 5, 2002
    Publication date: September 4, 2003
    Inventors: John S. Nantz, Qingfeng Tang, Ronald O. King, Riad Ghabra, Keith Walker, Thomas Bejster, Bruce Conner, Qing Li, Art Turovsky
  • Patent number: 6563474
    Abstract: A remote access device which may comprise an antenna having a first inductor with a first axis, a second inductor with a second axis, and a third inductor with a third axis, where the first, second and third axes may be oriented substantially perpendicular to each other, respectively, such that the first inductor generates a first magnetic field associated with a first plane, the second inductor generates a second magnetic field associated with a second plane different than the first plane, and the third inductor generates a third magnetic field associated with a third plane different than the first and second planes. The remote access device preferably includes a single form for the first, second and third inductors, where the first, second and third inductors are each wound on the form.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: May 13, 2003
    Assignee: Lear Corporation
    Inventors: John S. Nantz, Qingfeng Tang, Qing Li, Bruce D. Conner, Keith A. Walker, Artem Melkumov, Ronald O. King, Riad Ghabra, Matthew Honkanen, Salman Khreizat
  • Patent number: 6559101
    Abstract: N-(5,7-dimethoxy[1,2,4]triazolo[1,5-a]pyrimidin-2-yl) arylsulfonamide compounds were prepared from 2-amino-5,7-dimethoxy[1,2,4]triazolopyrimidine and appropriately substituted benzenesulfonyl chloride and pyridinesulfonyl chloride compounds. The compounds were found to be useful as herbicides.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: May 6, 2003
    Assignee: Dow AgroSciences LLC
    Inventors: Timothy Calvin Johnson, John Cord VanHeertum, David George Ouse, Kim Eric Arndt, Mark Andrew Pobanz, David Keith Walker
  • Publication number: 20030084473
    Abstract: The present invention relates to the production of a non-transgenic plant resistant or tolerant to a herbicide of the phosphonomethylglycine family, e.g., glyphosate. The present invention also relates to the use of a recombinagenic oligonucleobase to make a desired mutation in the chromosomal or episomal sequences of a plant in the gene encoding for 5-enol pyruvylshikimate-3-phosphate synthase (EPSPS). The mutated protein, which substantially maintains the catalytic activity of the wild-type protein, allows for increased resistance or tolerance of the plant to a herbicide of the phosphonomethylglycine family, and allows for the substantially normal growth or development of the plant, its organs, tissues or cells as compared to the wild-type plant irrespective of the presence or absence of the herbicide.
    Type: Application
    Filed: August 9, 2002
    Publication date: May 1, 2003
    Applicant: VALIGEN
    Inventors: Greg Gocal, Patricia Avissar, Mark Knuth, Peter Beetham, Keith Walker
  • Publication number: 20030073417
    Abstract: A transmitter circuit includes an oscillator circuit and an amplifier circuit. The oscillator circuit includes a surface acoustic wave (SAW) resonator and generates a carrier signal. The amplifier circuit receives the carrier signal and a data signal, and generates an output signal as the carrier signal modulated with the data signal.
    Type: Application
    Filed: October 11, 2001
    Publication date: April 17, 2003
    Applicant: Lear Corporation
    Inventors: John S. Nantz, Riad Ghabra, Qingfeng Tang, Keith A. Walker
  • Publication number: 20030053529
    Abstract: A self-tuning duplicating transceiver is provided. The transceiver includes a microprocessor, a transmitter and a receiver. The transmitter includes an electrically tunable radio frequency oscillator, and the receiver includes a counter for determining an edge count associated with a received signal. The microprocessor is programmed to receive an unknown signal with the receiver and use the counter to determine the edge count thereof, and electrically tune the transmitter oscillator to a carrier frequency corresponding to the edge count for the unknown signal.
    Type: Application
    Filed: August 14, 2002
    Publication date: March 20, 2003
    Inventors: John S. Nantz, Qingfeng Tang, Riad Ghabra, Ronald O. King, Bruce Conner, Art Turovsky, Keith Walker, Thomas Beister
  • Publication number: 20030034298
    Abstract: A device (100) for heat-treating water is provided, comprising a confined heating zone, a passage way (15) for transporting the water to said confined heating zone (23) so as to facilitate heating of the water, a controller (27) for preventing the heated water from leaving the device (100) until pathogens entrained in the heated water are killed; and an antimicrobial substrate (20) for preventing pathogens entrained in unheated water from leaving the device (100).
    Type: Application
    Filed: February 12, 2002
    Publication date: February 20, 2003
    Inventor: Brian Keith Walker
  • Publication number: 20020190056
    Abstract: The present invention is a system that automatically controls the selection, start-up and operation of primary and secondary heating towers chosen from an array of heating towers having varying physical and thermal sizes. The automatic control is implemented via a programmable logic controllers (PLC). The PLC provides independent control for each heating tower irrespective of the tower being a primary or secondary heating source. Should the demand for heated water upon the primary heating tower increase to a rate that the primary tower cannot satisfy, the PLC maintains the operation of the primary tower and at the same time starts the secondary heating tower to meet the increased hot water demand. Once the demand has dropped to rates that the primary heating tower can once again maintain, the secondary tower is disabled.
    Type: Application
    Filed: March 11, 2002
    Publication date: December 19, 2002
    Inventor: Brian Keith Walker
  • Patent number: 6479531
    Abstract: Compounds of formula (I) and their pharmaceutically acceptable salts are ligands at gastrin and/or cholecystokinin receptors. X and Y are independently ═N—, —N(R5)—═CH—, —S— or —O—.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: November 12, 2002
    Assignee: James Black Foundation Limited
    Inventors: Sarkis Barret Kalindjian, Ildiko Maria Buck, Ian Duncan Linney, Paul Trevor Wright, Iain Mair McDonald, Katherine Isobel Mary Steel, Robert Antony David Hull, Sonia Patricia Roberts, John David Gaffen, Jeremy Gilbert Vinter, Martin Keith Walker, James Whyte Black, Gillian Fairfull Watt, Elaine Anne Harper, Nigel Paul Shankley, Matthew John Tozer, David John Dunstone, Michael John Pether, Elliot James Lilley, David Andrew Sykes, Caroline Minli Rachel Low, Eric Peter Griffin, Laurence Wright
  • Publication number: 20020111361
    Abstract: N-(5,7-dimethoxy[1,2,4]triazolo[1,5-a]pyrimidin-2-yl) arylsulfonamide compounds were prepared from 2-amino-5,7-dimethoxy[1,2,4]triazolopyrimidine and appropriately substituted benzenesulfonyl chloride and pyridinesulfonyl chloride compounds. The compounds were found to be useful as herbicides.
    Type: Application
    Filed: November 2, 2001
    Publication date: August 15, 2002
    Inventors: Timothy Calvin Johnson, John Cord VanHeertun, David George Ouse, Kim Eric Arndt, Mark Ardrew Pobanz, David Keith Walker
  • Patent number: 6422702
    Abstract: A method for monitoring the amount of unexposed photographic film remaining in a motion camera film magazine that includes the steps of: providing an unexposed motion picture film containing a support having at least one light sensitive image recording layer and a transparent magnetic recording layer; recording film length data on the transparent magnetic recording layer of the unexposed motion picture film; loading the unexposed motion picture film in a motion picture film magazine; and reading the film length data from the transparent magnetic recording layer as it is removed from the film supply magazine to provide an indication of the amount of unexposed film remaining in the motion picture film magazine. The amount of unexposed film remaining may be displayed in a read-out device associated with the film magazine or camera.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: July 23, 2002
    Assignee: Eastman Kodak Company
    Inventors: Ronald E. Uhlig, Robert O. James, Charles C. Anderson, Keith A. Walker, David C. Markham
  • Publication number: 20020080083
    Abstract: A remote access device which may comprise an antenna having a first inductor with a first axis, a second inductor with a second axis, and a third inductor with a third axis, where the first, second and third axes may be oriented substantially perpendicular to each other, respectively, such that the first inductor generates a first magnetic field associated with a first plane, the second inductor generates a second magnetic field associated with a second plane different than the first plane, and the third inductor generates a third magnetic field associated with a third plane different than the first and second planes. The remote access device preferably includes a single form for the first, second and third inductors, where the first, second and third inductors are each wound on the form.
    Type: Application
    Filed: October 24, 2001
    Publication date: June 27, 2002
    Applicant: LEAR CORPORATION
    Inventors: John S. Nantz, Qingfeng Tang, Qing Li, Bruce D. Conner, Keith A. Walker, Artem Melkumov, Ronald O. King, Riad Ghabra, Matthew Honkanen, Salman Khreizat
  • Patent number: 6400399
    Abstract: A process for viewing a motion picture film scene image with concurrently displayed subtitle text comprising: providing a motion picture print film comprising a support bearing at least one light sensitive image recording layer and a transparent magnetic recording layer; printing a negative film scene image onto the motion picture print film to form a positive scene image; recording subtitle information in the magnetic recording layer in synchronization with the scene image; projecting the print film scene image for viewing while simultaneously reading the subtitle information recorded in the magnetic recording layer; and converting the subtitle information to text comprising alphanumeric characters and displaying the subtitle text in conjunction with the projected screen image. One or more language subtitles may be recorded onto and read from a transparent magnetic recording layer on a motion picture film in synchronization with the film image.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: June 4, 2002
    Assignee: Eastman Kodak Company
    Inventors: Charles C. Anderson, Robert O. James, Ronald E. Uhlig, Keith A. Walker, David C. Markham
  • Patent number: 6397184
    Abstract: A system for associating a prerecorded audio snippet with a photograph, includes: an audio data base containing a plurality of audio snippets, each snippet having a corresponding identification code. A scene identification display includes an identification code associated with the scene. A camera having a sensor for sensing the identification code on the display includes a memory for storing the identification code in association with a photograph of the scene taken by the camera. The audio snippet corresponding to the identification code is retrieved from the audio data base and reproduced in conjunction with the display of the photograph.
    Type: Grant
    Filed: October 24, 1996
    Date of Patent: May 28, 2002
    Assignee: Eastman Kodak Company
    Inventor: Keith A. Walker
  • Patent number: 6317191
    Abstract: A process for viewing a positive motion picture film scene image with an accompanying original audio soundtrack comprising: providing a motion picture origination negative film comprising a support bearing at least one light sensitive image recording layer and a transparent magnetic recording layer; optically recording a motion picture scene in the motion picture negative film by exposing the film in a motion picture camera, and simultaneously recording contemporaneous original audio information in the magnetic recording layer on a frame-by-frame basis in synchronization with the scene image; providing a motion picture print film comprising a support bearing at least one light sensitive image recording layer and a transparent magnetic recording layer; printing the negative film scene image onto the motion picture print film to form a positive scene image, and transferring the original audio information from the magnetic recording layer of the negative film to the magnetic recording layer of the print film in
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: November 13, 2001
    Assignee: Eastman Kodak Company
    Inventors: Robert O. James, Charles C. Anderson, Ronald E. Uhlig, Keith A. Walker, David C. Markham
  • Patent number: 5284971
    Abstract: Compounds of general formula (I) ##STR1## wherein R.sup.1 is (CH.sub.2).sub.n ((CHNR.sup.7 R.sup.8).sub.m C(O)R.sup.9 ; n=1-3; and m=0 or 1;R.sup.3 and R.sup.5 are independently Cl, Br, I, or CH.sub.3 ;R.sup.7 and R.sup.8 are independently H or (C.sub.1 -C.sub.4)alkyl;R.sup.9 is OH, (C.sub.1 -C.sub.4)alkoxy, or NR.sup.7 R.sup.8 ;R.sup.31 is H, Cl, Br, I, (C.sub.1 -C.sub.4)alkyl, (C.sub.4 -C.sub.6)cycloalkyl, (C.sub.1 -C.sub.4)haloalkyl, (C.sub.4 -C.sub.6)halocycloalkyl, or --CH(R.sup.10)Ar where Ar is selected from 5-hydroxypyrid-2-yl, 6-hydroxypyrid-3-yl, 6-hydroxypyridazin-3-yl, 6-methoxypyridazin-3-yl, 6-hydroxypyridazin-3-yl N-oxide, and 6-methoxypyridazin-3-yl N-oxide and R.sup.10 is H or (C.sub.1 -C.sub.4)alkyl;R.sup.41 is OH or a bioprecursor thereof; and the pharmaceutically acceptable salts thereof; are structural analogs of the thyroid hormones T.sub.3 and T.sub.4 and exhibit selective thyromimetic activity.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: February 8, 1994
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Keith A. Walker, Sharada S. Labadie, Denis J. Kertesz, Craig W. Laughton
  • Patent number: 5198907
    Abstract: Exposure areas in a calibration original are automatically found by reference to a registration mark having a predetermined dimensional orientation relative to the exposure areas. A scanner produces image signals representative of both the exposure areas and the registration mark. A pattern recognition module employs edge detection to distinguish image signals corresponding to the registration mark. Two-dimensional Cartesian coordinates are then extracted from the registration mark and used to further distinguish image signals corresponding to the exposure areas, thereby locating exposure areas although the original may not be properly aligned in the scanner. A preferred registration mark is a pair of orthogonal, intersecting guide bars. By further defining the nominal length of the guide bars, the size of the mark can be established and the exposure areas can be located despite dimensional changes due to magnification error in the scanner.
    Type: Grant
    Filed: August 23, 1991
    Date of Patent: March 30, 1993
    Assignee: Eastman Kodak Company
    Inventors: Keith A. Walker, Donald A. Koop
  • Patent number: 5158949
    Abstract: Compounds of formula (I): ##STR1## wherein n is 2 or 3;p is 0, 1 or 2;q is 0, 1 or 2;X is oxygen or S(O).sub.t where t is 0, 1 or 2;each R.sup.1 is independently halo, lower alkyl, lower alkoxy, or trifluoromethyl;each R.sup.2 is independently halo or lower alkyl;R.sup.3 is nitro or --N(R.sup.5)R.sup.6 whereR.sup.5 is hydrogen or lower alkyl;R.sup.6 is hydrogen lower alkyl, lower alkylsulfonyl or --C(Y)R.sup.7 where Y is oxygen or sulfur and R.sup.7 is hydrogen, lower alkyl, lower alkoxy or --N(R.sup.8)R.sup.9 where R.sup.8 is hydrogen or lower alkyl and R.sup.9 is hydrogen, lower alkyl or lower alkoxycarbonyl; orR.sup.5 and R.sup.6 together with N is pyrrolidino, piperidino, morpholino, thiomorpholino or piperazino, wherein the piperazino is optionally substituted at the 4-position by --N(O)R.sup.10 where R.sup.10 is hydrogen, lower alkyl, lower alkoxy or amino; andR.sup.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: October 27, 1992
    Assignee: Syntex (U.S.A.) Inc.
    Inventors: Keith A. Walker, Pamela M. Burton, David C. Swinney
  • Patent number: D386341
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: November 18, 1997
    Inventor: Keith Walker