Patents by Inventor John W. Gregory

John W. Gregory 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: 9995328
    Abstract: A kit includes a furniture module bracket and a furniture leg. The furniture module bracket has a flange defining a furniture leg attachment opening. Protrusions are attached to the flange to define a keyway between adjoining protrusions. One of the protrusions defines a protrusion aperture. The furniture leg comprises a furniture leg bracket attached to a support member. The furniture leg bracket defines keys which can pass through the keyways. At least one of the keys defines a key aperture. The furniture leg can be attached to the furniture module by (i) inserting the furniture leg bracket into the furniture leg attachment opening, (ii) rotating the support member until the keys are no longer aligned with the keyways and (iii) securing the furniture module bracket to the furniture leg bracket with a fastener disposed within an aligned key aperture and a protrusion aperture.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: June 12, 2018
    Assignee: VIRCO MFG. CORPORATION
    Inventor: John W. Gregory
  • Publication number: 20170108022
    Abstract: A kit includes a furniture module bracket and a furniture leg. The furniture module bracket has a flange defining a furniture leg attachment opening. Protrusions are attached to the flange to define a keyway between adjoining protrusions. One of the protrusions defines a protrusion aperture. The furniture leg comprises a furniture leg bracket attached to a support member. The furniture leg bracket defines keys which can pass through the keyways. At least one of the keys defines a key aperture. The furniture leg can be attached to the furniture module by (i) inserting the furniture leg bracket into the furniture leg attachment opening, (ii) rotating the support member until the keys are no longer aligned with the keyways and (iii) securing the furniture module bracket to the furniture leg bracket with a fastener disposed within an aligned key aperture and a protrusion aperture.
    Type: Application
    Filed: October 20, 2015
    Publication date: April 20, 2017
    Inventor: John W. Gregory
  • Patent number: 6541383
    Abstract: An arrangement for planarizing a surface of a semiconductor wafer. The arrangement includes a planarizing member having a planarizing surface configured to be (i) positioned in contact with and (ii) moved relative to the surface of the semiconductor wafer so as to remove material from the surface of the semiconductor wafer such that the surface of the semiconductor wafer is planarized. The arrangement also includes an adherence promoting ligand chemically bonded to the planarizing surface of the planarizing member. The arrangement further includes an abrasion particle chemically bonded to the adherence promoting ligand such that the abrasion particle is attached to the planarizing surface of the planarizing member. The arrangement also includes a conditioning bar having a conditioning portion positioned in contact with a wafer track defined on the planarizing member. The conditioning portion is configured so that the conditioning portion extends completely across the wafer track.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: April 1, 2003
    Assignee: LSI Logic Corporation
    Inventors: Derryl D. J. Allman, John W. Gregory
  • Patent number: 6528389
    Abstract: This invention comprises an improved method of planarizing, an integrated circuit formed onto a semiconductor substrate and the planarized semiconductor substrate. Improved planarity is accomplished through the use a first and second stop layer separated by a filler layer. A first stop layer is used to define active and trench regions. A filler layer is then applied over the surface of the substrate and a second stop layer is applied on top of the filler layer. The second stop layer is patterned through etching. The pattern etched into the second stop layer is used to control chemical mechanical polishing that planarizes the surface. Patterns can be a reverse image of an active mask or a continuous pattern. In addition CMP can be used to create a condition of equilibrium planarity before the second stop layer is applied. The stop layers can comprise polysilicon, silicon nitride, or another material that is harder than a dielectric oxide material used as filler material.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: March 4, 2003
    Assignee: LSI Logic Corporation
    Inventors: Derryl D. J. Allman, John W. Gregory
  • Patent number: 6354908
    Abstract: A method of planarizing a first side of a semiconductor wafer with a polishing system includes the step of polishing the first side of the wafer in order to remove material from the wafer. The method also includes the step of moving a lens of a confocal optical system between a number of lens positions so as to maintain focus on the first side of the wafer during the polishing step. The method further includes the step of determining a rate-of-movement value based on movement of the lens during the moving step. Moreover, the method includes the step of stopping the polishing step if the rate-of-movement value has a predetermined relationship with a movement threshold value. An apparatus for polishing a first side of a semiconductor wafer is also disclosed.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: March 12, 2002
    Assignee: LSI Logic Corp.
    Inventors: Derryl D. J. Allman, David W. Daniel, John W. Gregory
  • Patent number: 6316276
    Abstract: A method of planarizing a semiconductor that includes (i) a substrate material, (ii) a first reflective substance positioned on the substrate material, (iii) an intermediate material positioned on the first reflective substance, wherein a channel is defined in a structure which includes the substrate, the first reflective substance, and the intermediate material, and (iv) a second reflective substance positioned on the intermediate material and in the channel is disclosed.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: November 13, 2001
    Assignee: LSI Lgoic Corporation
    Inventors: John W. Gregory, Derryl D. J. Allman
  • Publication number: 20010021622
    Abstract: A method of planarizing a first side of a semiconductor wafer with a polishing system includes the step of polishing the first side of the wafer in order to remove material from the wafer. The method also includes the step of moving a lens of a confocal optical system between a number of lens positions so as to maintain focus on the first side of the wafer during the polishing step. The method further includes the step of determining a rate-of-movement value based on movement of the lens during the moving step. Moreover, the method includes the step of stopping the polishing step if the rate-of-movement value has a predetermined relationship with a movement threshold value. An apparatus for polishing a first side of a semiconductor wafer is also disclosed.
    Type: Application
    Filed: January 4, 2001
    Publication date: September 13, 2001
    Inventors: Derryl D.J. Allman, David W. Daniel, John W. Gregory
  • Patent number: 6284586
    Abstract: The present invention relates to a semiconductor device, preferably a capacitor, and a method of forming the same. The method adds only a single additional masking step to the the fabrication process and reduces problems relating to alignment of various layers. A relatively thick insulation layer is formed over a bottom electrode. An opening having a sidewall that is etched in the insulation layer using a mask to expose a portion of the bottom electrode. Once the mask is removed, a dielectric layer and conductive layer are then sequentially deposited over the entire structure, including sidewalls. Thereafter, chemical-mechanical polishing is used to remove portions of the conductive layer and the dielectric layer so that the conductive layer and dielectric layer which remains forms, for example, the top electrode and dielectric layer of the integrated circuit capacitor.
    Type: Grant
    Filed: November 1, 1999
    Date of Patent: September 4, 2001
    Assignee: LSI Logic Corporation
    Inventors: John J. Seliskar, Derryl D. J. Allman, John W. Gregory, James P. Yakura, Dim Lee Kwong
  • Patent number: 6241847
    Abstract: A method of polishing a first layer of a semiconductor wafer down to a second layer of the semiconductor wafer is disclosed. One step of the method includes polishing the first layer of the semiconductor wafer with a polishing surface having a chemical slurry positioned thereon. The polishing step causes an infrared spectrum to be emitted through the semiconductor wafer. Another step of the method includes detecting a rate of change of intensity level of the infrared spectrum and generating a control signal in response thereto. The method also includes halting the polishing step in response to generation of the control signal. Polishing systems are also disclosed which determine a polishing endpoint for a semiconductor wafer based upon an infrared spectrum generated due to a chemical slurry reacting with the semiconductor wafer.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: June 5, 2001
    Assignee: LSI Logic Corporation
    Inventors: Derryl D. J. Allman, David W. Daniel, John W. Gregory
  • Patent number: 6201253
    Abstract: A method of planarizing a first side of a semiconductor wafer with a polishing system includes the step of polishing the first side of the wafer in order to remove material from the wafer. The method also includes the step of moving a lens of a confocal optical system between a number of lens positions so as to maintain focus on the first side of the wafer during the polishing step. The method further includes the step of determining a rate-of-movement value based on movement of the lens during the moving step. Moreover, the method includes the step of stopping the polishing step if the rate-of-movement value has a predetermined relationship with a movement threshold value. An apparatus for polishing a first side of a semiconductor wafer is also disclosed.
    Type: Grant
    Filed: October 22, 1998
    Date of Patent: March 13, 2001
    Assignee: LSI Logic Corporation
    Inventors: Derryl D. J. Allman, David W. Daniel, John W. Gregory
  • Patent number: 6168502
    Abstract: The present invention provides a method and apparatus for conditioning a polishing pad in which slurry is directed under pressure at the polishing pad. Additionally, energy (i.e., ultrasonic energy) may be added to the slurry as it is directed towards the polishing pad, wherein embedded material in the polishing pad is removed or dislodged.
    Type: Grant
    Filed: December 14, 1998
    Date of Patent: January 2, 2001
    Assignee: LSI Logic Corporation
    Inventors: Derryl D. J. Allman, John W. Gregory
  • Patent number: 6121147
    Abstract: A method of planarizing a semiconductor wafer to a distance from a semiconductor substrate of the wafer is disclosed. The method includes the step of forming in the wafer a metallic reporting substance that is at the predetermined distance from the substrate of the wafer. The method also includes the step of polishing a first side of the wafer in order to remove material from the wafer. The method further includes the step of utilizing an atomic absorption spectroscopic technique to detect the presence of the metallic reporting substance in the material removed from the wafer. Moreover, the method includes the step of terminating the polishing step in response to the detection of the metallic reporting substance. An associated apparatus for polishing a semiconductor wafer down to a metallic reporting substance of the wafer is also described.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: September 19, 2000
    Assignee: LSI Logic Corporation
    Inventors: David W. Daniel, John W. Gregory, Derryl D. J. Allman
  • Patent number: 6115233
    Abstract: The present invention relates to a semiconductor device, preferably a capacitor, and a method of forming the same. The method adds only a single additional masking step to the fabrication process and reduces problems relating to alignment of various layers. A relatively thick insulation layer is formed over a bottom electrode. An opening having a sidewall that is etched in the insulation layer using a mask to expose a portion of the bottom electrode. Once the mask is removed, a dielectric layer and conductive layer are then sequentially deposited over the entire structure, including sidewalls. Thereafter, chemical-mechanical polishing is used to remove portions of the conductive layer and the dielectric layer so that the conductive layer and dielectric layer which remains forms, for example, the top electrode and dielectric layer of the integrated circuit capacitor.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: September 5, 2000
    Assignee: LSI Logic Corporation
    Inventors: John J. Seliskar, Derryl D. J. Allman, John W. Gregory, James P. Yakura, Dim Lee Kwong
  • Patent number: 5868608
    Abstract: The present invention provides a method and apparatus for conditioning a polishing pad in which slurry is directed under pressure at the polishing pad. Additionally, energy (i.e., ultrasonic energy) may be added to the slurry as it is directed towards the polishing pad, wherein embedded material in the polishing pad is removed or dislodged.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: February 9, 1999
    Assignee: LSI Logic Corporation
    Inventors: Derryl D.J. Allman, John W. Gregory
  • Patent number: 5809436
    Abstract: An automatic throttle adjustor system for a power boat which is operable to return a carburetor throttle valve to an idle setting from a user-selected setting when a sensor mounted on a bottom of the boat is about to leave the water, and which is operable to return the throttle valve to the user selected setting from the idle setting when the sensor is again submerged in the water. The system includes the sensor, a controller, an actuator, and a throttle linkage. The sensor supplies signals to the controller indicative of whether the sensor is submerged or airborne. The controller uses the signals supplied by the sensor to switch the actuator between a normal, activated state, in which the throttle valve is at the user-selected setting, to a deactivated state, in which the throttle is moved to the idle setting. The throttle linkage includes an element which is in a first position when the actuator is in the activated state and which moves to a second position when the actuator is deactivated.
    Type: Grant
    Filed: January 19, 1996
    Date of Patent: September 15, 1998
    Inventor: John W. Gregory
  • Patent number: 5559733
    Abstract: A ferroelectric memory includes a constant voltage source, a capacitor having first and second electrodes, and a transistor having a gate. A switch alternately connects the gate of the transistor to the first electrode and the constant voltage source. In another embodiment, there are two ferroelectric transistors, and the first electrode of each capacitor is connected both to the gate of the transistor and to a voltage source external of the memory.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: September 24, 1996
    Assignees: Symetrix Corporation, Olympus Optical Co., Ltd.
    Inventors: Larry D. McMillan, Takashi Mihara, Hiroyuki Yoshimori, John W. Gregory, Carlos A. Paz de Araujo
  • Patent number: 5523964
    Abstract: An integrated circuit non-volatile, non-destructive read-out memory unit includes a ferroelectric capacitor having first and second electrodes, a capacitance Cf, and an area Af, and a transistor having a gate, a source and a drain forming a gate capacitor having an area Ag and a gate capacitance Cg, a gate overlap b, and a channel depth a, with the capacitor first electrode connected to the gate of the transistor. The ferroelectric material has a dielectric constant .epsilon.f and the gate insulator has a dielectric constant .epsilon.g. A source of a constant reference voltage is connectable to the first electrode. A bit line connects to the second electrode. In one embodiment the first electrode and gate are the same conductive member. In another embodiment the second electrode and the gate are the same conductive member and the first electrode is formed by extensions of the transistor source and drains underlying the gate, with the ferroelectric material between the source and drain extensions and the gate.
    Type: Grant
    Filed: April 7, 1994
    Date of Patent: June 4, 1996
    Assignees: Symetrix Corporation, Olympus Optical Co., Ltd.
    Inventors: Larry D. McMillan, Takashi Mihara, Hiroyuki Yoshimori, John W. Gregory, Carlos A. Paz de Araujo