Patents Represented by Attorney Fletcher Yoder

Find this attorney in the Justia Lawyer Directory

  • Backflow prevention device
    Patent number: 6341652
    Abstract: A system for preventing backflow of a fluid from one zone to another, e.g. from a lower wellbore zone to an upper wellbore zone. The system is deployed in cooperation with a tube, such as a tube utilized to protect electrical or optical signal transfer lines. A one-way check valve is deployed in the fluid flow path created by the tube to prevent the backflow of an undesired fluid along the tube. A separate feed-through allows for passage of the signal transfer lines.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: January 29, 2002
    Assignee: Schlumberger Technology Corporation
    Inventors: David L. Malone, Christophe M. Rayssiguier
  • Small electrode for chalcogenide memories
    Patent number: 6337266
    Abstract: A method for fabricating an ultra-small electrode or plug contact for use in chalcogenide memory cells specifically, and in semiconductor devices generally, in which disposable spacers are utilized to fabricate ultra-small pores into which the electrodes are formed. The electrodes thus defined have minimum lateral dimensions ranging from approximately 500 to 4000 Angstroms. The pores thus defined may then be used to fabricate a chalcogenide memory cell or other semiconductor devices.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: January 8, 2002
    Assignee: Micron Technology, Inc.
    Inventor: Russell C. Zahorik
  • Deployment tubing connector having internal electrical penetrator
    Patent number: 6332499
    Abstract: A connector for use in a deployment system able to deploy and power a device, such as an electric submergible pumping system, in a well. The connector includes pluggable ends that permit connection adjacent segments, each having an outer section of tubing and an internal power cable. Each connector includes a tubing connector portion and a power cable connector portion that permit pluggable connection of sequential tubing segments when deploying a device or system downhole.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: December 25, 2001
    Assignee: Camco International, Inc.
    Inventors: Lee S. Kobylinski, John C. Pursell, Howard A. Oswald, Marcus D. McHugh, Pinke Halpert
  • Protection of downwell pumps from sand entrained in pumped fluids
    Patent number: 6330915
    Abstract: A system for separating particulates from a liquid prior to pumping of the liquid. The system is amenable to use, for example, in a wellbore environment for separating sand or other particulate matter from a production fluid. The system uses a sand separator, a submersible pump and a mechanism for reinjecting the particulate matter downstream of the pump discharge. This permits the sand and other particulates to be routed around the pump to reduce the potentially detrimental effects of such particulate matter on certain pumps.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: December 18, 2001
    Inventor: Emmanuel G. Moya
  • Dual electric submergible pumping system installation to simultaneously move fluid with respect to two or more subterranean zones
    Patent number: 6325143
    Abstract: A dual submergible pumping system permits the production and/or injection of fluids from or into separate zones within a narrowly confined wellbore without commingling of fluids. The system includes at least first and second electric submergible pumping systems. Typically, the design allows the electric submergible pumping systems to be arranged generally axially within a wellbore. Each system, however, is able to produce or inject fluids along a fluid flow path that is isolated from the fluid flow path of the other electric submergible pumping system.
    Type: Grant
    Filed: June 22, 1999
    Date of Patent: December 4, 2001
    Assignee: Camco International, Inc.
    Inventor: Kevin T. Scarsdale
  • Dual electric motor marine propulsion system
    Patent number: 6322406
    Abstract: A propulsion system for watercraft, such as pleasure craft, fishing boats, and so forth, includes a pair of unitary propulsion units driven by electric motors. The units are positioned to create components of thrust, and a net or resultant thrust to navigate the watercraft in response to operator inputs. The propulsion units may be mounted in a stern region of the craft to provide fore-and-aft navigational thrust, as well as thrust for turning the craft as desired. The rotational speeds of the units are adjusted in cooperation to produce the desired navigational thrust. Props of the units may be positioned within integral recesses within the hull, with motors for driving the props positioned within a drive cavity of the hull. The motors may be reversible to further enhance the controllability and maneuverability of the watercraft.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: November 27, 2001
    Assignee: Bombardier Motor Corporation of America
    Inventors: Thomas E. Griffith, Sr., Loy Hoskins, Robert F. Saunders, Calvin Tyler
  • Method and apparatus for producing diffusion weighted MR images
    Patent number: 6323646
    Abstract: A technique is provided for generating images on an MRI system in which errors due to gradient pulses are compensated. The errors are identified in advance, such as in a calibration sequence performed on the MRI system. Receiver phase adjustment and logical gradient error values are derived from the identified error values. The calibration sequence may be a modified version of the MRI imaging sequence used to produce the images. The correction values may be based upon corrections at the center of k-space. The technique is particularly useful in compensating for effects of eddy currents in pulse sequences employing high slew rate gradient pulses, such as diffusion weighted echo planar imaging sequences.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: November 27, 2001
    Assignee: General Electric Company
    Inventors: Xiaohong Zhou, Joseph K. Maier, Steven J. Huff, Hammond Glenn Reynolds
  • Reversing control for trolling motor propulsion system
    Patent number: 6322405
    Abstract: An operator input device for a propulsion unit on a watercraft. The propulsion unit is of the type having an electric motor and a prop drivingly coupled to the electric motor. The operator input device includes a control circuit coupled to the propulsion unit and a switch coupled to the control circuit. The switch is adapted to momentarily alter a predefined rotational state of the prop when activated by the operator. Prior to activation of the switch the propulsion system operates having a predefined rotational state of the prop in a first rotational direction and at a first pre-selected speed. When the switch is activated, the motor and prop may be altered regarding either rotational speed, direction or both.
    Type: Grant
    Filed: March 31, 2000
    Date of Patent: November 27, 2001
    Assignee: Bombardier Motor Corporation of America
    Inventors: Thomas E. Griffith, Sr., Jeffrey T. Hudson
  • Method and apparatus for calibrating a position sensor used in engine control
    Patent number: 6321592
    Abstract: A system is provided for calibrating a position sensor having a variable output corresponding to the variable position of a movable member. The system establishes, for the position sensor an original assumed output corresponding to a given position of the movable member, establishes for the position sensor a maximum output corresponding to the given position, the maximum output being greater than or equal to the assumed output, establishes for the position sensor a minimum output corresponding to the given position, the minimum output being less than or equal to the assumed output, determines an actual output of the position sensor and, if the actual output is between the maximum output and the minimum output, the system reestablishes the assumed output as being a function of the original assumed output and the actual output.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: November 27, 2001
    Assignee: Bombardier Motor Corporation of America
    Inventors: Philip J. Bylsma, Paul T. Ng
  • System and method for pumping and heating viscous fluids in a wellbore
    Patent number: 6318467
    Abstract: A system for pumping and heating viscous fluids in a wellbore includes electrical power supplies, a switchboard, conductors, and a submergible pumping system having a pump and a submergible electric motor. The electrical power supplies are coupled to the submergible pumping system through a switchboard and conductors that supply electrical power to the motor. The electrical power supplies provide direct or alternating current and include protective circuitry. The submergible pumping system may be supplied with electrical power to motor stator windings to generate heat to raise the temperature and lower the viscosity of adjacent viscous fluids.
    Type: Grant
    Filed: December 1, 1999
    Date of Patent: November 20, 2001
    Assignee: Camco International, Inc.
    Inventors: Joseph C. Liu, Rick Bailey
  • Method for making a photomask with multiple absorption levels
    Patent number: 6319639
    Abstract: A photomask for manufacturing a semiconductor device. The photomask is manufactured by a providing a photomask substrate and alternately depositing a plurality of layers of a light-absorbing material and of an etch-stop material on the photomask substrate. The light-absorbing material is selected as having a well-defined etching selectivity from that of the etch-stop material. The layers are successively patterned by removing by a selective etching process at least a portion of at least one of said layers, the portion removed from a lower, in relation to the substrate, layer a subset of the portion removed from a higher layer. Together, the patterned layers are used as a photomask to photolithographically imprint a pattern of a photoresist on a semiconductor wafer under manufacture. The photoresist is used in the etching process of the semiconductor wafer.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: November 20, 2001
    Assignee: Micron Technology, Inc.
    Inventor: Alan R. Reinberg
  • Method of making chalcogenide memory device
    Patent number: 6316784
    Abstract: A method for fabricating chalcogenide memories in which ultra-small pores are formed in insulative layers using disposable spacers. The chalcogenide memory elements are positioned within the ultra-small pores. The chalcogenide memory elements thus defined have minimum lateral dimensions ranging from approximately 500 to 4000 Angstroms.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: November 13, 2001
    Assignee: Micron Technology, Inc.
    Inventors: Russell C. Zahorik, Alan R. Reinberg
  • Recessed-container cells and method of forming the same
    Patent number: 6313022
    Abstract: A container capacitor having a recessed conductive layer. The recessed conductive layer is typically made of polysilicon. The recessed structure reduces the chances of polysilicon “floaters,” which are traces of polysilicon that remain on the surface of the substrate, coupling adjacent capacitors together to create short circuits. The disclosed method of creating such a recessed structure uses successive etches. One of these etches selectively isolates a rim of the polysilicon within the container to recess the rim, while the remainder of the polysilicon in the container is protected by photoresist.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: November 6, 2001
    Assignee: Micron Technology, Inc.
    Inventor: Bradley J. Howard
  • System and method for improving the appearance of skin
    Patent number: 6312450
    Abstract: A cosmetic system and technique are provided for improving the texture and appearance of an individual's skin. The system includes a light transport modifier that may be applied to a portion of the individual's epidermis. The light transport modifier is designed to displace naturally occurring water within that portion. Energy from an appropriate laser, infrared lamp, or the sun can then be directed to a treatment area beneath the epidermal layer without detrimental heat buildup in that area of the epidermis.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: November 6, 2001
    Assignee: Natural Vision Center, Inc.
    Inventors: Edward Q. Yavitz, Michael J. Berry
  • Chemical vapor deposition using organometallic precursors
    Patent number: 6313035
    Abstract: A multi-component layer is deposited on a semiconductor substrate in a semiconductor process. The multi-component layer may be a dielectric layer formed from a gaseous titanium organometallic precursor, reactive silane-based gas and a gaseous oxidant. The multi-component layer may be deposited in a cold wall or hot wall chemical vapor deposition (CVD) reactor, and in the presence or absence of plasma. The multi-component layer may also be deposited using other processes, such as radiant energy or rapid thermal CVD.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: November 6, 2001
    Assignee: Micron Technology, Inc.
    Inventors: Gurtej S. Sandhu, Pierre Fazan
  • Start-assist circuit
    Patent number: 6308688
    Abstract: A start-assist circuit for increasing the fuel-injection voltage during the startup of an internal combustion engine having fuel injectors, a starter solenoid, and a battery is provided. The boost circuit receives the battery DC power and then boosts the battery voltage to provide an output having a level sufficient for a fuel injection solenoid during the start process.
    Type: Grant
    Filed: September 3, 1999
    Date of Patent: October 30, 2001
    Assignee: Bombardier Motor Corporation of America
    Inventors: Michael J. French, Mark Skrzypchak
  • Apparatus for maximizing memory density within existing computer system form factors
    Patent number: 6310782
    Abstract: A system includes a memory module formed of a first portion having a first side that directly connects to a mount in the system, which first side is of a first length; and a second portion having a second side, which second side is of a second length, the second length being greater than the first length. The second side may comprise an arcuate form or a plane that is different from the plane of the first side. Each of the first and second portions is used for affixing a memory element.
    Type: Grant
    Filed: October 31, 1996
    Date of Patent: October 30, 2001
    Assignee: Compaq Computer Corporation
    Inventors: Robert W. Noonan, Jeffrey L. Hooten, Christian H. Post
  • Relaxed write timing for a memory device
    Patent number: 6310820
    Abstract: A memory device provides a relaxed write timing scheme that improves access time. The address and/or the data is set up to the memory array during a previous write cycle so that the next write cycle can proceed without delays produced in delivering the address and/or the data to the array during the write cycle in which the data is to be written to the array.
    Type: Grant
    Filed: June 17, 1999
    Date of Patent: October 30, 2001
    Assignee: Micron Technology, Inc.
    Inventors: John D. Porter, William N. Thompson, Larren G. Weber
  • Network node with internal battery backup
    Patent number: 6311279
    Abstract: A method and apparatus for providing uninterrupted DC power for network nodes. The uninterrupted DC power is derived from modular, stackable uninterruptible power supplies that fit within the housing of the network node. Because the battery of the uninterruptible power supply is charged from a DC output of a main power supply, only one AC/DC power converter is required. A high degree of efficiency is therefore obtained.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: October 30, 2001
    Assignee: Compaq Computer Corporation
    Inventor: Hai N. Nguyen
  • Piston motor protector, and motor and pumping system incorporating the same
    Patent number: 6307290
    Abstract: A downhole pumping system includes a downhole pump that is coupled to a downhole motor. The downhole motor includes a motor protector that utilizes one or more retractable and extensible pistons, instead of an elastomeric bag, to accommodate motor oil contraction and expansion. The motor protector may also include one or more contamination containment sections for processing contaminants in downhole fluid to reduce contamination of the motor oil.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: October 23, 2001
    Assignee: Camco International, Inc.
    Inventor: Kevin T. Scarsdale