Patents Represented by Law Firm Weiss & Associates
  • Patent number: 6169391
    Abstract: A device which rectifies and regulates high voltage alternating current without the use of transformers, large capacitive coupling circuits or high voltage linear regulators. The device includes a rectifier, a control circuit for sensing the output voltage of the rectifier and switching on and off the input power, a storage capacitor and a low voltage linear regulator. The control circuit, which incorporates a voltage sensing circuit and a switch, limits the output voltage of the rectifier as seen by the linear regulator.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: January 2, 2001
    Assignee: Supertex, Inc.
    Inventor: Jimes Lei
  • Patent number: 6145388
    Abstract: An apparatus and method is disclosed for supporting a fluid sampling device in an opening below a manhole cover. The apparatus contains a triangular shaped assembly of three tubular members joined together at a common juncture. At least one of the tubular members has an extending member to adapt the triangular shaped assembly to be connected beneath a manhole cover of varying sizes for different sized openings in a street.
    Type: Grant
    Filed: August 12, 1998
    Date of Patent: November 14, 2000
    Inventor: Daniel D. Coppola
  • Patent number: 6116463
    Abstract: A high-speed sluice assembly and method for transporting semiconductor devices includes a slide along which the semiconductor devices are transported and two independently controlled stoppers which control the transport of the semiconductor devices along the slide. Each of the independently controlled stoppers is connected to a separate actuator. Each of the actuators is also independently controlled. Several sensors are coupled to the slide to determine the position of the semiconductor devices as they are transported along the slide.
    Type: Grant
    Filed: August 5, 1998
    Date of Patent: September 12, 2000
    Inventor: Arnold T. M. Telkamp
  • Patent number: 6109822
    Abstract: Lid 12 has affixed thereto an annular resilient flap 26 which cooperates with a flange 21 on a lid support 13 to resist dislodgement of the lid. The flap 26 i worked into position beneath the flange 21 by rotation of the lid about its axis. A container portion 34 of the lid may contain a granular material to add weight to the lid.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: August 29, 2000
    Inventors: Lucky Campbell, Rodger Calder
  • Patent number: 6110128
    Abstract: A biopsy needle assembly that is an improvement over the Jamshidi biopsy needle assembly is provided. The improved biopsy needle assembly includes a cannula with a uniform diameter internal surface defining an inner biopsy tissue sample receiving and retaining bore having projections thereon, and a stylet having rounded edges with at least one V-shaped groove at a distal cutting tip removably received within the bore of the cannula. The projections may be barbs, annular or spiral ribs that line the inner biopsy tissue sample receiving and retaining bore. The stylet may include a quick release knob for engaging with an improved coupling at the proximal end of the cannula. The improved coupling is substantially cylindrical with a cross handle substantially in the middle thereof. The coupling may also include internal threads engaging a syringe. The improved biopsy needle assembly permits more consistent acquisition of an adequate tissue sample for biopsy and is less painful to the patient.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: August 29, 2000
    Inventors: John B. Andelin, Martin T. White
  • Patent number: 6099043
    Abstract: A coupon catalogue comprising a pack of equal sized cards which is readily concealable and carried on the person in a clothing pocket or a purse or a wallet, which can be fanned to expose all of the cards in the pack for simultaneous viewing, and which can be utilized to obtain complimentary goods and services without requiring that portions of the catalogue be torn, punched, marked, or located by using a table of contents in the coupon catalogue.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: August 8, 2000
    Inventor: Gerald A. Story
  • Patent number: 6091103
    Abstract: An improved integrated electrically adjustable analog transistor device is delineated wherein the device has multiple sub-structures to optimize performance of the device. One of the sub-structures is particularly well suited for charging the device's insulated gate. Additional sub-structures, each different in dimensions and electrical characteristics from the first sub-structure, are implemented for optimal use with an external electrical circuit.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: July 18, 2000
    Inventor: Robert L. Chao
  • Patent number: 6060955
    Abstract: A voltage compensated oscillator circuit having a resistor capacitor (RC) circuit for setting a frequency of oscillation for the oscillator circuit. A switching circuit with hysterisis is coupled to the RC circuit for providing upper and lower threshold limits. The upper and lower threshold limits being used for controlling the direction of switching of the oscillator circuit. By adjusting the upper and lower threshold limits, one may compensate for voltage signal fluctuations so that the frequency of oscillation will not change due to power supply voltage fluctuations.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: May 9, 2000
    Assignee: Microchip Technology Incorporated
    Inventor: Joseph A. Thomsen
  • Patent number: 5970655
    Abstract: A Christmas tree support apparatus and method is disclosed wherein a collar member is provided around a base portion of a Christmas tree. A radial extension member is removably connected to the collar and to a rod at one end thereof which connection between the radial extension member and the rod can be adjusted. The other end of the rod is connected to the Christmas tree above the center of gravity point thereof.
    Type: Grant
    Filed: July 3, 1997
    Date of Patent: October 26, 1999
    Inventor: Jerry K. M. Freeman
  • Patent number: 5968144
    Abstract: The present invention relates to a system and method for supporting DMA I/O devices. A PCI-PCI bridge is provided to support DMA I/O devices on the PCI bus. Through the use of two signal lines and a serial link, DMA transfers may be accomplished over the PCI bus. A PCI-ISA dock bridge is also provided to allow the system to support DMA I/O devices and ISA masters (i.e., any device including DMA I/O devices on the ISA bus that generates ISA cycles) on the ISA bus.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: October 19, 1999
    Assignee: VLSI Technology, Inc.
    Inventors: Gary Walker, James J. Jirgal, Rishi Nalubola, Franklyn H. Story
  • Patent number: 5956589
    Abstract: A method is disclosed for forming narrow thermal silicon dioxide side isolation regions in a semiconductor substrate and MOS or CMOS semiconductor devices fabricated by this method. A thin oxynitride lateral diffusion barrier to oxygen is used in conjunction with a polysilicon buffering stress relief layer on the surface of a semiconductor substrate prior to the field oxidation process to restrict lateral silicon dioxide expansion thereby permitting the creation of narrow thermal silicon dioxide side isolation regions in the semiconductor substrate.
    Type: Grant
    Filed: September 5, 1997
    Date of Patent: September 21, 1999
    Assignee: Microchip Technology Incorporated
    Inventors: Roger D. St. Amand, Neil F. Deutscher, Robert P. Ma
  • Patent number: 5950819
    Abstract: A storage, admixing, and dispensing system is shown. The storage, admixing, and dispensing system has a first vessel for retaining a first substance. A support structure is coupled to and seals the first vessel, and a second vessel is coupled to the support structure for containing a second substance. A release mechanism is coupled to the support structure for releasing the second vessel from the support structure for combining the first substance with the second substance. The second vessel is internal to and retained within the first vessel. The release mechanism comprises a resilient material pushbutton which also seals the second vessel. The second vessel is also an agitator for combining the first substance and the second substance. Additionally, the first vessel is a dispensing apparatus for dispensing the admixture. Further included is a safety mechanism coupled to the resilient material pushbutton for preventing accidental operation of the release mechanism.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: September 14, 1999
    Inventor: Andy Sellars
  • Patent number: 5946604
    Abstract: A sound card of a personal computer provides an audio signal that modulates a carrier of an FM transmitter. Radiation from the transmitter is received by an FM receiver.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: August 31, 1999
    Assignee: 1-O-X Corporation
    Inventor: James Lee Bailey
  • Patent number: D414245
    Type: Grant
    Filed: August 18, 1997
    Date of Patent: September 21, 1999
    Inventor: George M. Watson
  • Patent number: D420693
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: February 15, 2000
    Inventor: Thomas Lee Haas
  • Patent number: D423057
    Type: Grant
    Filed: February 5, 1998
    Date of Patent: April 18, 2000
    Inventor: James P. Mooney
  • Patent number: D429076
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: August 8, 2000
    Inventor: Kelly B. Rash
  • Patent number: D429382
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: August 8, 2000
    Assignees: Jon S. Crain, Elias Tamez, Eric J. Longon
    Inventors: Jon S. Crain, Elias Tamez
  • Patent number: D430099
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: August 29, 2000
    Inventor: John R. Sobey
  • Patent number: D431097
    Type: Grant
    Filed: August 2, 1999
    Date of Patent: September 19, 2000
    Assignee: Eric J. Longam
    Inventor: Elias Tamez