Patents by Inventor John C. Walker
John C. 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).
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Patent number: 7601886Abstract: The invention provides methods of producing plants with increased seed production and transgenic plants with increased seed yields produced by said methods.Type: GrantFiled: August 5, 2005Date of Patent: October 13, 2009Assignee: The Curators of the University of MissouriInventors: John C. Walker, Jiangqi Wen, Jia Li
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Publication number: 20040098409Abstract: The invention consists of a system and method for administering respondent screenings, such as in the context of a patient in a doctor's office. Respondents access a web site using a portable web appliance and are presented with a series of questions. The questions are selected for each individual respondent from a large database of questions, based on certain criteria. At the conclusion of the session, one or more reports are printed out for the respondent and any other interested parties, which may have certain questions “red-flagged” to draw the attention of the respondent and/or administrator.Type: ApplicationFiled: November 15, 2002Publication date: May 20, 2004Inventors: Kelly J. Kelleher, John C. Walker, James B. Ummer, Eugene B. Ginzburg, Nathaniel J. See, Justin M. Bass
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Patent number: 6630339Abstract: A DNA (SEQ ID No.:2) and amino acid (SEQ ID No.:4) sequences of Glycine &agr;-D-galactosidase are provided as well as the DNA sequence (SEQ ID No:5) and mature length amino acid sequence (SEQ ID No:7) of Phaseolus.Type: GrantFiled: August 4, 2000Date of Patent: October 7, 2003Assignee: The Curators of the University of MissouriInventors: Daniel S. Smith, John C. Walker
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Publication number: 20030087739Abstract: Methods and systems for constructing multiwall corrugated container blanks having body portions and flap portions of different wall thickness. In one embodiment, the methods and systems are usable for constructing a multiwall corrugated container blank having a triple wall body portion and double wall flap portions with a score line between each flap portion and the body portion to make subsequent folding of the flaps easier. In one aspect of this embodiment, the system includes a slitter/scorer aligner operably connected to a slitter/scorer. The slitter/scorer aligner determines a location of an edge of the body portion and transmits this location information to the slitter/scorer to position a scoring system and a slitting system. The slitter/scorer aligner also stabilizes the multiwall corrugated container blank as it moves between the slitter/scorer aligner and the slitter/scorer.Type: ApplicationFiled: June 14, 2002Publication date: May 8, 2003Inventors: John R. Hagemann, John C. Walker, Guy T. Robertshaw, Michael J. Eaton
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Patent number: 6184017Abstract: A DNA (SEQ ID No.:2) and amino acid (SEQ ID No.:4) sequences of Glycine &agr;-D-galactosidase are provided as well as the DNA sequence (SEQ ID No:5) and mature length amino acid sequence (SEQ ID No:7) of Phaseolus.Type: GrantFiled: March 13, 1998Date of Patent: February 6, 2001Assignee: The Curators of the University of MissouriInventors: Daniel S. Smith, John C. Walker
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Patent number: 5951877Abstract: An apparatus and method are disclosed for filtering or separating particles. The apparatus has a motor coupled to a centrifuge rotor rotatable about an axis of rotation. A fluid chamber rotates with the rotor. A substance is supplied to the inlet of the chamber. At least one of the motor and the substance supply are controlled to maintain a saturated fluidized bed of first particles within the fluid chamber while causing second particles to be retained in the chamber.Type: GrantFiled: July 5, 1996Date of Patent: September 14, 1999Assignee: Cobe Laboratories, Inc.Inventors: Robert Langley, Dennis Hlavinka, Linda A. Taylor, John C. Walker
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Patent number: 5913768Abstract: An apparatus and method are disclosed for filtering or separating particles. The apparatus has a motor coupled to a centrifuge rotor rotatable about an axis of rotation. A fluid chamber rotates with the rotor. A substance is supplied to the inlet of the chamber. At least one of the motor and the substance supply are controlled to maintain a saturated fluidized bed of first particles within the fluid chamber while causing second particles to be retained in the chamber.Type: GrantFiled: July 5, 1996Date of Patent: June 22, 1999Assignee: Cobe Laboratories, Inc.Inventors: Robert Langley, Dennis Hlavinka, Linda A. Taylor, John C. Walker
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Patent number: 5906570Abstract: An apparatus and method are disclosed for filtering or separating particles. The apparatus has a motor coupled to a centrifuge rotor rotatable about an axis of rotation. A fluid chamber rotates with the rotor. A substance is supplied to the inlet of the chamber. At least one of the motor and the substance supply are controlled to maintain a saturated fluidized bed of first particles within the fluid chamber while causing second particles to be retained in the chamber.Type: GrantFiled: August 4, 1997Date of Patent: May 25, 1999Assignee: Cobe Laboratories, Inc.Inventors: Robert Langley, Dennis Hlavinka, Linda A. Taylor, John C. Walker
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Patent number: 5731426Abstract: A DNA (SEQ ID No.:2) and amino acid (SEQ ID No.:4) sequences of Glycine .alpha.-D-galactosidase are provided as well as the DNA sequence (SEQ ID No:5) and mature length amino acid sequence (SEQ ID No:7) of Phaseolus.Type: GrantFiled: May 28, 1996Date of Patent: March 24, 1998Assignee: The Curators of the University of MissouriInventors: Daniel S. Smith, John C. Walker
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Patent number: 5722926Abstract: A fluid chamber and method are disclosed for filtering or separating particles. The fluid chamber includes a wall extending between an inlet and outlet to form a fluid chamber interior. The interior converges from a position of maximum cross-sectional area toward the inlet. A groove or a step may be formed on an inner surface of the fluid chamber wall to improve particle separation within the fluid chamber.Type: GrantFiled: June 27, 1996Date of Patent: March 3, 1998Assignee: COBE Laboratories, Inc.Inventors: Dennis Hlavinka, Robert Langley, Linda Taylor, John C. Walker
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Patent number: 5674173Abstract: A fluid chamber and method are disclosed for filtering or separating particles. The fluid chamber includes a wall extending between an inlet and outlet to form a fluid chamber interior. The interior converges from a position of maximum cross-sectional area toward the inlet. A groove or a step may be formed on an inner surface of the fluid chamber wall to improve particle separation within the fluid chamber.Type: GrantFiled: April 18, 1995Date of Patent: October 7, 1997Assignee: Cobe Laboratories, Inc.Inventors: Dennis Hlavinka, Robert Langley, Linda Taylor, John C. Walker
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Patent number: 5656057Abstract: The invention relates to a method of drying and sintering porous optical fiber preforms, especially those consisting of a solid glass core cane surrounded by a layer of cladding soot. After it is dried in a dehydrating atmosphere, the porous preform is heated to a presinter temperature just below that at which it would begin to rapidly densify. The various temperature holds and ramp rates are such that the preform is consolidated in a relatively short time without becoming cloudy or exhibiting other defects that would adversely affect the optical fiber drawn from the consolidated draw blank.Type: GrantFiled: May 19, 1995Date of Patent: August 12, 1997Assignee: Corning IncorporatedInventors: Gillian L. Brown, Richard M. Fiacco, John C. Walker
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Patent number: 5633130Abstract: A method of increasing efficiency of deantigenation of blood group epitopes on erythrocytes (seroconversion) by exoglycosidases utilizing a step of performing the deantigenation in a zwitterionic buffer. The method provides a buffer system and exoglycosidase that utilizes a twenty to one hundred fold lower total enzyme mass than the prior art methods.Type: GrantFiled: September 8, 1994Date of Patent: May 27, 1997Assignee: The Curators of the University of MissouriInventors: Daniel S. Smith, John C. Walker
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Patent number: 5610063Abstract: A purified and isolated cDNA clone, as set forth in SEQ ID No:1, encoding the mature chicken .alpha.-N-acetylgalactosaminidase enzyme is disclosed.Type: GrantFiled: March 17, 1995Date of Patent: March 11, 1997Assignee: Curators of the University of MissouriInventors: Daniel S. Smith, John C. Walker
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Patent number: 5606042Abstract: A DNA (SEQ ID No.:2) and amino acid (SEQ ID No.:4) sequences of Glycine .alpha.-D-galactosidase are provided as well as the DNA sequence (SEQ ID No:5) and mature length amino acid sequence (SEQ ID No:7) of Phaseolus.Type: GrantFiled: June 7, 1995Date of Patent: February 25, 1997Assignee: The Curators of the University of MissouriInventors: Daniel S. Smith, John C. Walker
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Patent number: 5252946Abstract: A method of detecting a deflated tire on a vehicle by comparing the rolling radii of the tires by comparing angular velocity signals from wheel speed sensors at each wheel comprising the steps of calculating the factors ##EQU1## where C1, C2, C3 and C4 are the signals for the speeds of the front left-hand, front right-hand, rear left-hand and rear right-hand wheels of the vehicle, monitoring these factors and if the value of one or more factor becomes greater than 1.0005 or less than 0.9995, producing a warning signal to indicate that a tire has become partially or completely deflated.Type: GrantFiled: December 4, 1991Date of Patent: October 12, 1993Assignee: Sumitomo Rubber Industries LimitedInventors: John C. Walker, Lavinder S. Rehal
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Patent number: 5248957Abstract: A method of detecting a deflated tire on a vehicle by comparing the rolling radii of the tires by comparing angular velocity speed signals from wheel speed sensors. One wheel speed sensor being provided at each wheel. Before the comparison of the signals is carried out, corrected wheel speed signals for each of the second, third and fourth wheels are calculated giving corrections for a set of factors comprising vehicle speed, lateral acceleration and longitudinal (fore/aft) acceleration. The corrections each comprise a constant for the factor concerned times the respective factor. The set of constants for each wheel is derived by taking the vehicle through a range of speeds, lateral and fore/aft accelerations and using multiple regression techniques and the respective factors are calculated from the set of uncorrected wheel speed signals so that comparison of the wheel speeds can be made without false signals from tire deflections caused by speed, lateral or fore/aft acceleration induced tire deflections.Type: GrantFiled: December 4, 1991Date of Patent: September 28, 1993Assignee: Sumitomo Rubber Industries LimitedInventors: John C. Walker, Lavinder S. Rehal
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Patent number: 5239469Abstract: A method of detecting a partially deflated pneumatic tire on a vehicle having four tires each mounted on a wheel including the steps of sensing the angular velocity of each wheel and producing a signal proportional thereto, processing the four signals in a processing unit which subtracts the sum of the signals from one pair of diagonally opposite wheels from the sum of the signals from the other pair of diagonally opposite wheels, sensing when the magnitude of the result is between 0.05% and 0.6% of the mean of the two sums to produce a signal factor and when said signal factor is present operating a warning device to indicate a tire is partially or completely deflated wherein the angular velocity of each wheel is measured simultaneously by a pulse generator providing a digital signal of more than twenty pulses per revolution of the wheel and a second signal of a single pulse per revolution of the wheel and the two angular velocity signals are both used.Type: GrantFiled: January 28, 1991Date of Patent: August 24, 1993Assignee: Sumitomo Rubber Industries Ltd.Inventors: John C. Walker, Lavinder S. Rehal
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Patent number: 5192929Abstract: A method of detecting a partially deflated pneumatic tire on a vehicle having four tires each mounted on a wheel comprising sensing the angular velocity of each wheel by providing for each wheel, a signal generator to provide a single signal or pulse for each turn of the wheel, characterized by selecting a first wheel and measuring the time for one rotation of that first wheel, after beginning the first measurement similarly measuring the times of rotation for each other wheel, storing the times for each of the wheels for at least three rotations of each wheel and averaging the times to produce an average angular velocity value for each wheel, processing the four signals in a processor unit which subtracts the sum of the signals from one pair of diagonally opposite wheels from the sum of the signals from the other pair of diagonally opposite wheels, sensing when the magnitude of the result is between 0.05% and 0.Type: GrantFiled: January 28, 1991Date of Patent: March 9, 1993Assignee: Sumitomo Rubber Industries LimitedInventors: John C. Walker, Lavinder S. Rehal
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Patent number: 5064001Abstract: A rotary soil working tool comprising a rotatable support member having an engaging portion and a plurality of soil working elements each comprising an elongated member with a waisted portion. Each soil working element is detachably secured to the engaging portion such that the element extends outwardly of the support member. Preferably the support member is adapted to be rotabably supported on a hub.Type: GrantFiled: June 26, 1990Date of Patent: November 12, 1991Assignee: Walkers Merredin Pty LtdInventor: John C. Walker