Patents Represented by Attorney Paul F. Wille

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  • El lamp with color matching or hidden graphic
    Patent number: 5646481
    Abstract: An EL lamp having a transparent front electrode is overprinted with an opaque graphic having the same color as the phosphor in the lamp. A translucent coating over the graphic is clear or tinted. The graphic is visible only when the lamp is lit. In an alternative embodiment of the invention, a second graphic, visible whether or not the lamp is lit, is overprinted on the lamp. The second graphic has a color perceptibly different from the color of the phosphor and is opaque, transparent, or any opacity between opaque and transparent.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: July 8, 1997
    Inventor: Charles I. Zovko
  • Methods for configuring and performing 3-level password searching in a distributed computer system
    Patent number: 5226172
    Abstract: A password scheme wherein a node is provided a configuration message at start-up which configures a shell of the node directing a search order of network password files. The node, group, and network password files are then transparently searched in the order specified by the configuration message.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: July 6, 1993
    Assignee: Motorola, Inc.
    Inventors: Leslie G. Seymour, Brian L. Matthews
  • Distributed computer system with network and resource status monitoring
    Patent number: 5109486
    Abstract: A requesting manager sends a message to its local configuration processor requesting notice of status changes in a general or particular, resource or node. The configuration manager establishes a record in its status monitoring file containing the information from the requesting process' message. The configuration manager receives messages: from remote configuration managers or local resource managers regarding resource status changes; and from its local network interface module regarding node changes. The configuration manager then compares these status change notifications with the records in its status monitoring file. If there is a match, the configuration manager sends a message to the requesting process reporting the status change. The status changes that are reported may be limited by the requesting process by specifying a particular status change, a particular resource, or other option.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: April 28, 1992
    Assignee: Motorola, Inc.
    Inventor: Leslie G. Seymour
  • Method for retrieving and updating data in a real-time data base system
    Patent number: 5101488
    Abstract: In a real-time data base system, data is updated by reading the data and checking an exception flag associated with a locked status. If the exception flag is not set, the data is locked and read in an updatable fashion. If the data is locked, the data may still be read if a peek-mode access is requested.
    Type: Grant
    Filed: May 2, 1989
    Date of Patent: March 31, 1992
    Assignee: Motorola, Inc.
    Inventors: Robert S. Rosenthal, Valentin Oprescu
  • Switching current regulator for motor control
    Patent number: 5086492
    Abstract: An improved motor control circuit is disclosed in which energy stored in the motor is transferred back to the power supply rather than being passively dissipated. The sense of a feedback signal is reversed at a summation node by combining the signal with an inverted, amplified reproduction of the signal.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: February 4, 1992
    Assignee: Motorola, Inc.
    Inventor: David L. Kent
  • Capacitive feed for plasma reactor
    Patent number: 5006760
    Abstract: A capacitive feed is disclosed for the lower electrode in a parallel plate plasma reactor. One plate of the capacitor comprises the lower electrode or a contact to the lower electrode. The other plate of the capacitor comprises an annular member insulated from the lower electrode, or the contact. There are no RF connections directly to the lower electrode.
    Type: Grant
    Filed: January 9, 1987
    Date of Patent: April 9, 1991
    Assignee: Motorola, Inc.
    Inventor: Herbert G. Drake, Jr.
  • Spatula for wafer transport
    Patent number: 4984954
    Abstract: In apparatus for transporting semiconductor wafers, a spatula contains a single major recess for receiving a wafer. Adjacent one edge of the recess is a shoulder for locating the wafer in the sequence of operations for loading the spatula. As a result of the sequence, the center of the wafer is held at a predetermined, known location.
    Type: Grant
    Filed: August 3, 1990
    Date of Patent: January 15, 1991
    Inventors: Douglas H. Warenback, Josef T. Hoog
  • Chopper for conventional ballast system
    Patent number: 4970437
    Abstract: A chopper circuit is series connected between a conventional ballast and the fluorescent lamps to provide a high frequency current to the lamps to increase and adjust the luminance thereof. The chopper circuit comprises a diode bridge with a transistor connected across the DC terminals thereof. The lamps are series connected with the AC terminals. A photocell is used in a feedback circuit to maintain constant lighting.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: November 13, 1990
    Assignee: Motorola Lighting, Inc.
    Inventor: Carlile R. Stevens
  • Tungsten disilicide CVD
    Patent number: 4966869
    Abstract: Tungsten disilicide (WSi.sub.x) films are deposited onto doped or undoped polysilicon by reducing WF.sub.6 with a mixture of dichlorosilane (SiH.sub.2 Cl.sub.2) and disilane (Si.sub.2 H.sub.6). The addition of disilane provides a mechanism for increasing the resistivity (silicon to tungsten ratio) of the film without adversely affecting the uniformity or deposition rate of the film. A high silicon to tungsten ratio prevents degradation of the silicide film and the underlaying polysilicon film during subsequent growth of an oxide (SiO.sub.2) dielectric. The excess silicon in the film also provides desirable etching and annealing characteristics.
    Type: Grant
    Filed: May 4, 1990
    Date of Patent: October 30, 1990
    Assignee: Spectrum CVD, Inc.
    Inventors: Joseph T. Hillman, J. B. Price, William M. Triggs
  • Method of treating semiconductor wafers in a magnetically confined plasma at low pressure by monitoring peak to peak voltage of the plasma
    Patent number: 4960610
    Abstract: In a magnetically confined plasma, optimal pressure is found by measuring the peak to peak voltage of the plasma and looking for a distinct minimum in the peak to peak voltage. The pressure at which the minimum occurs can be used to calibrate a manometer used in the system.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: October 2, 1990
    Assignee: Tegal Corporation
    Inventor: Ole Krogh
  • Mass flow stabilized
    Patent number: 4958658
    Abstract: A mass flow stabilizer utilizes a restriction and a chamber for the dampening of pressure fluctuations between a gas pressure regulator and a mass flow controller.
    Type: Grant
    Filed: June 25, 1987
    Date of Patent: September 25, 1990
    Assignee: Tegal Corporation
    Inventor: John P. Zajac
  • Method and apparatus for low pressure plasma
    Patent number: 4949670
    Abstract: In a magnetically confined plasma, optimal pressure is found by measuring the peak to peak voltage of the plasma and looking for a distinct minimum in the peak to peak voltage. The pressure at which the minimum occurs can be used to calibrate a manometer used in the system.
    Type: Grant
    Filed: November 4, 1988
    Date of Patent: August 21, 1990
    Assignee: Tegal Corporation
    Inventor: Ole Krogh
  • Point and select device
    Patent number: 4939508
    Abstract: A point and select device is disclosed in which a sphere protruding from one major surface of a housing can serve as either a trackball or the moving element in a mouse. Actuators on either side of the device are selected according to the use of the device. The sense of motion for up/down is reversed between the two modes of operation.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: July 3, 1990
    Assignee: Emtek Health Care Systems, Inc.
    Inventors: James G. Lawrence, Oscar R. Diaz, Robert E. Erdmann, Jr.
  • Transfer method using walking beam gripper
    Patent number: 4907939
    Abstract: A method for transporting annular disks is disclosed in which the disks, stored in a cassette, are loaded onto a cantilever as a group, transported to another location, and unloaded singly by a walking beam motion along the cantilever. The process is reversed for loading the disks into a cassette.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: March 13, 1990
    Assignee: Phase 2 Automation
    Inventor: Richard J. Carlton
  • Plasma etch isotropy control
    Patent number: 4889588
    Abstract: A tapered profile is obtained in oxide etched in a plasma glow discharge by switching the RF power between the side and lower electrodes in a tri-electrode reactor. The etch is isotropic while the RF power is applied to the side electrode and is anisotropic when the RF power is applied to the lower electrode.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: December 26, 1989
    Assignee: Tegal Corporation
    Inventor: Gianni O. Fior
  • Ignitor for a microwave sustained plasma
    Patent number: 4888088
    Abstract: A high frequency, high voltage is capacitively applied to a process gas through a quartz tube to ignite a glow discharge within the tube. The quartz tube runs through a microwave cavity and the ignitor is positioned upstream of the cavity. The cavity is tuned for a steady state glow discharge and is not changed during initiation of the plasma. The ignitor excites the process gas into active species and the gas flow takes the species through the cavity where the microwave energy brings the gas to an ionized state and the plasma is sustained.
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: December 19, 1989
    Assignee: Tegal Corporation
    Inventor: Harry Slomowitz
  • Spatula for wafer transport
    Patent number: 4867631
    Abstract: In apparatus for transporting semiconductor wafers, a spatula contains a single major recess for receiving a wafer. Adjacent one edge of the recess is a shoulder for locating the wafer in the sequence of operations for loading the spatula. As a result of the sequence, the center of the wafer is held at a predetermined, known location.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: September 19, 1989
    Assignee: Tegal Corporation
    Inventors: Douglas H. Warenback, Josef T. Hoog
  • Walking beam gripper
    Patent number: 4865509
    Abstract: Apparatus for transporting annular disks is disclosed in which a pair of jaws provide either a radial or an inside grip on the disks. The disks are stored on a cantilever and moved along the beam by an additional walking beam.
    Type: Grant
    Filed: October 29, 1987
    Date of Patent: September 12, 1989
    Assignee: Phase 2 Automation
    Inventor: Richard J. Carlton
  • Cassette elevator for use in a modular article processing machine
    Patent number: 4861222
    Abstract: Improved handling of multi-wafer cassettes in automated wafer processing machines is accomplished by means of an improved cassette elevator. The design of the cassette elevator is such that the receiver/sender portion of the wafer processing machine can be easily configured to accommodate single or multiple cassette elevators served by a single wafer loading spatula without increasing the width of the receiver/sender units. In addition, an automatic tilt feature of the cassette elevator substantially reduces the likelihood of wafer breakage during the cassette loading and unloading operation.
    Type: Grant
    Filed: March 9, 1984
    Date of Patent: August 29, 1989
    Assignee: Tegal Corporation
    Inventor: Ninko T. Mirkovich
  • Vacuum load lock
    Patent number: 4861563
    Abstract: A compact load lock and processing chamber is disclosed in which a moveable member forms a closure for both a load lock volume and an article processing volume. The moveable member is connected to fixed members by a flexible diaphragm which provides a non-sliding seal.
    Type: Grant
    Filed: May 14, 1987
    Date of Patent: August 29, 1989
    Assignee: Spectrum CVD, Inc.
    Inventors: Brian H. Shekerjian, J. B. Price