Patents by Inventor David R. Johnson

David R. Johnson 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: 20020142593
    Abstract: A plasma etching machine comprises a process chamber defining an interior region and including a bottom wall having an aperture and a block disposed in the aperture and including a longitudinally extending bore. A shaft extends through the bore and includes a spider push rod extending longitudinally therethrough. An internally cooled chuck is coupled to the shaft and disposed in the interior region and cooperates with the shaft to define a chamber. A spider is disposed in the chamber and is coupled to the push rod. A lift mechanism is coupled to the shaft and the push rod so that the spider pushes up on a wafer in response to actuation of the lift mechanism. A wafer clamping mechanism is coupled to the push rod if a mechanical clamp is used. In the case of electrostatic clamp the bias applied to the chuck is coupled with the use of a rotational roller to allow the bias to be applied to the chuck for the duration of the etch process. A RF source is needed for ionization of the gas.
    Type: Application
    Filed: February 22, 2000
    Publication date: October 3, 2002
    Inventors: Rodney C. Langley, David R. Johnson, William L. Hofer
  • Patent number: 6457978
    Abstract: A cable modern termination system (CMTS) having front and rear sides is disclosed. A rear panel receives a plurality of connector cards. At least one first connector card wherein each first connector card has a row of connectors. At least one second connector cards, wherein each second connector card has a row of connectors, wherein connectors on the first connector cards are staggered from connectors on the second connector cards when the connector cards are inserted into the rear panel.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: October 1, 2002
    Assignee: Cadent, Inc.
    Inventors: Thomas J. Cloonan, Daniel W. Hickey, Thomas J. Mack, David R. Johnson
  • Patent number: 6453312
    Abstract: A computer-implemented system and method for allowing users to interactively develop search queries is provided. The system performs query development utilizing a hierarchical concept tree stored in memory, wherein the nodes of the concept tree are concepts that describe various search topics. Parent/child relationships are created between the concepts, with children concepts describing sub-categories of a parent concept, and so on. Any concept at any level in the tree structure may be related to one or more character strings descriptive of the related concept. Query development is performed by traversing the various relationships in the hierarchical tree structure to selectively add related character strings to a potential query. According to one embodiment, the user is allowed to control the manner and extent of the traversal, and is further allowed to de-select any located concepts and character strings for further use in query development.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: September 17, 2002
    Assignee: Unisys Corporation
    Inventors: David A. Goiffon, David R. Johnson, Gerald E. Hartmann
  • Patent number: 6429928
    Abstract: A method and apparatus for endpoint detection for the stripping of a particular material, such as photo-resist material, from a substrate surface. A beam of light is projected onto the substrate surface and the fluoresced and/or reflected light intensity at a particular wavelength band is measured by a light detector. The light intensity is converted to a numerical value and transmitted electronically to a control mechanism which determines the proper disposition of the substrate. The control mechanism controls the cessation of the stripping process and may control a substrate-handling device which sequentially transfers substrates to and from a stripping chamber.
    Type: Grant
    Filed: September 20, 1999
    Date of Patent: August 6, 2002
    Assignee: Micron Technology, Inc.
    Inventors: David R. Johnson, Joe Lee Phillips, Todd C. Nielsen, Robert J. Hatfield
  • Patent number: 6427230
    Abstract: A system for maintaining an object repository within an object management system where the objects are software constructs and the system provides a set of tools for creating packages of the objects that can be reused as well as monitored as they are changed or recombined. The packages themselves become new objects for the repository to store. The set of relationships within a package is also stored as are any relationships between any of the objects within the object management system object repository.
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: July 30, 2002
    Assignee: Unisys Corporation
    Inventors: David A. Goiffon, David R. Johnson
  • Publication number: 20020093642
    Abstract: A method and apparatus for detection of a particular material, such as photo-resist material, on a sample surface. A narrow beam of light is projected onto the sample surface and the fluoresced and/or reflected light intensity at a particular wavelength band is measured by a light detector. The light intensity is converted to a numerical value and transmitted electronically to a logic circuit which determines the proper disposition of the sample. The logic circuit controls a sample-handling robotic device which sequentially transfers samples to and from a stage for testing and subsequent disposition. The method is particularly useful for detecting photo-resist material on the surface of a semiconductor wafer.
    Type: Application
    Filed: March 7, 2002
    Publication date: July 18, 2002
    Inventors: Mark Eyolfson, Elton J. Hochhalter, Joe Lee Phillips, David R. Johnson, Peter S. Frank
  • Publication number: 20020043483
    Abstract: Catalyst particles are presulfided in a treatment zone separate from a hydroconversion reaction zone. The presulfided catalyst is then added to a substantially packed bed of catalyst in the hydroconversion reaction zone at reaction pressure, so that the reactor is not shut down to replace catalyst. The presulfiding process is particularly beneficial for use in moving bed reactors for heavy oil conversion.
    Type: Application
    Filed: April 20, 2001
    Publication date: April 18, 2002
    Inventors: Pak C. Leung, David E. Earls, Bruce E. Reynolds, David R. Johnson, Robert W. Bachtel, Harold J. Trimble
  • Publication number: 20020042220
    Abstract: A cable modern termination system (CMTS) having front and rear sides is disclosed. A rear panel receives a plurality of connector cards. At least one first connector card wherein each first connector card has a row of connectors. At least one second connector cards, wherein each second connector card has a row of connectors, wherein connectors on the first connector cards are staggered from connectors on the second connector cards when the connector cards are inserted into the rear panel.
    Type: Application
    Filed: June 18, 2001
    Publication date: April 11, 2002
    Inventors: Thomas J. Cloonan, Daniel W. Hickey, Thomas J. Mack, David R. Johnson
  • Patent number: 6369887
    Abstract: A method and apparatus for detection of a particular material, such as photo-resist material, on a sample surface. A narrow beam of light is projected onto the sample surface and the fluoresced and/or reflected light intensity at a particular wavelength band is measured by a light detector. The light intensity is converted to a numerical value and transmitted electronically to a logic circuit which determines the proper disposition of the sample. The logic circuit controls a sample-handling robotic device which sequentially transfers samples to and from a stage for testing and subsequent disposition. The method is particularly useful for detecting photo-resist material on the surface of a semiconductor wafer.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: April 9, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Mark Eyolfson, Elton J. Hochhalter, Joe Lee Phillips, David R. Johnson, Peter S. Frank
  • Patent number: 6362655
    Abstract: An active resistor design is adapted to implement a linearized transistor driver that includes a first FET coupled between a supply potential and an output node, with the gate of the first FET being coupled to an input node. Second and third FETs are coupled between the output node and a reference potential, with the gate of the second FET being coupled to the input node.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: March 26, 2002
    Assignee: Intel Corporation
    Inventors: Isaac P. Abraham, David R. Johnson
  • Publication number: 20020034497
    Abstract: The present invention provides a novel isolated and purified Harknessia lythrii. It further provides a mycoherbicidal composition that is effective in controlling purple loosestrife, and methods for controlling purple loosestrife.
    Type: Application
    Filed: May 2, 2001
    Publication date: March 21, 2002
    Inventors: David R. Johnson, Roger L. Becker, Elizabeth Jean Stamm Katovich, John W. Gronwald, Amy Y. Rossman, Kathryn L. Plaisance, David F. Farr
  • Publication number: 20010046043
    Abstract: A method and apparatus for endpoint detection for the stripping of a particular material, such as photo-resist material, from a substrate surface. A beam of light is projected onto the substrate surface and the fluoresced and/or reflected light intensity at a particular wavelength band is measured by a light detector. The light intensity is converted to a numerical value and transmitted electronically to a control mechanism which determines the proper disposition of the substrate. The control mechanism controls the cessation of the stripping process and may control a substrate-handling device which sequentially transfers substrates to and from a stripping chamber.
    Type: Application
    Filed: September 20, 1999
    Publication date: November 29, 2001
    Inventors: DAVID R. JOHNSON, JOE LEE PHILLIPS, TODD C. NIELSEN, ROBERT J. HATFIELD
  • Patent number: 6324681
    Abstract: An automated development system which allows developers to more easily incorporate functionality from enterprise-based On-Line Transaction Processing (OLTP) services within an application running on a DCOM-based platform. View files (which describe how parameters will be provided to and received from an OLTP service) are transferred from the enterprise OLTP system to a DCOM environment. These view files and an associated set of interactively supplied user parameters are provided as input to a function builder utility (DGateAce) which generates function files and Interface Definition Language files as output.
    Type: Grant
    Filed: October 1, 1998
    Date of Patent: November 27, 2001
    Assignee: Unisys Corporation
    Inventors: James S. Sebesta, Joey L. Erickson, David R. Johnson
  • Publication number: 20010013930
    Abstract: A method and apparatus for detection of a particular material, such as photo-resist material, on a sample surface. A narrow beam of light is projected onto the sample surface and the fluoresced and/or reflected light intensity at a particular wavelength band is measured by a light detector. The light intensity is converted to a numerical value and transmitted electronically to a logic circuit which determines the proper disposition of the sample. The logic circuit controls a sample-handling robotic device which sequentially transfers samples to and from a stage for testing and subsequent disposition. The method is particularly useful for detecting photo-resist material on the surface of a semiconductor wafer.
    Type: Application
    Filed: April 25, 2001
    Publication date: August 16, 2001
    Inventors: Mark Eyolfson, Elton J. Hochhalter, Joe Lee Phillips, David R. Johnson, Peter S. Frank
  • Patent number: 6268203
    Abstract: The present invention provides a novel isolated and purified strain of Sphaeropsis sp. It further provides a mycoherbicidal composition that is effective in controlling purple loosestrife, and methods for controlling purple loosestrife.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: July 31, 2001
    Assignee: Regents of the University of Minnesota
    Inventors: David R. Johnson, Roger L. Becker, Elizabeth Jean Stamm-Katovich, Robert Nyvall, Donald L. Wyse
  • Publication number: 20010009459
    Abstract: A method and apparatus for endpoint detection for the stripping of a particular material, such as photo-resist material, from a substrate surface. A beam of light is projected onto the substrate surface and the fluoresced and/or reflected light intensity at a particular wavelength band is measured by a light detector. The light intensity is converted to a numerical value and transmitted electronically to a control mechanism which determines the proper disposition of the substrate. The control mechanism controls the cessation of the stripping process and may control a substrate-handling device which sequentially transfers substrates to and from a stripping chamber.
    Type: Application
    Filed: February 28, 2001
    Publication date: July 26, 2001
    Inventors: David R. Johnson, Joe Lee Phillip, Todd C. Nielsen, Robert J. Hatfield
  • Patent number: 6256094
    Abstract: A method and apparatus for detection of a particular material, such as photo-resist material, on a sample surface. A narrow beam of light is projected onto the sample surface and the fluoresced and/or reflected light intensity at a particular wavelength band is measured by a light detector. The light intensity is converted to a numerical value and transmitted electronically to a logic circuit which determines the proper disposition of the sample. The logic circuit controls a sample-handling robotic device which sequentially transfers samples to and from a stage for testing and subsequent disposition. The method is particularly useful for detecting photo-resist material on the surface of a semiconductor wafer.
    Type: Grant
    Filed: December 30, 1999
    Date of Patent: July 3, 2001
    Assignee: Micron Technology, Inc.
    Inventors: Mark Eyolfson, Elton J. Hochhalter, Joe Lee Phillips, David R. Johnson, Peter S. Frank
  • Patent number: 6247064
    Abstract: A system and method for adding a queue entry containing message data to a queue shared by communicating, sequential processes includes an enqueue instruction. The enqueue instruction attaches a queue entry to either the tail or the head of the shared queue, as specified by an application programmer. Execution of the enqueue instruction includes blocking access to the queue by other processes, updating queue linkages, activating processes waiting on entries being made to the queue, monitoring interrupts, and validating the appropriate queue data structures. If desired, in lieu of adding a queue entry containing message data to the queue, the enqueue instruction inserts an event indicator into the shared queue structure, thereby providing synchronization capabilities between communicating processes.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: June 12, 2001
    Assignee: Unisys Corporation
    Inventors: Merwin H. Alferness, Charles R. Caldarale, David C. Johnson, David R. Johnson, James R. McBreen, Wayne D. Ward
  • Patent number: 6226792
    Abstract: An object management system is providing for managing, cataloging, and discovering various potentially reusable code and data components that exist within an Information Technology (IT) platform, and which each have well-defined interfaces with other components. For each of these re-usable code and data components, an associated software object called an “asset element” is created that describes the associated component. Relationships are created between various asset elements to represent the relationships existing between the software components. Other software objects called “locator elements” are created that each describes an application concept or sub-concept. This application concept or sub-concept is associated with a problem solved by the code and data components within the IT platform. Relationships are created between the various locator elements to correlate the concepts and sub-concepts to software constructs represented by asset elements.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: May 1, 2001
    Assignee: Unisys Corporation
    Inventors: David A. Goiffon, Gerald E. Hartmann, David R. Johnson
  • Patent number: D461334
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: August 13, 2002
    Assignee: Newell Operating Company
    Inventors: David R. Johnson, David A. Allen