Patents Represented by Law Firm J & A
  • Method for using an antimicrobial agent for ophthalmic formulations
    Patent number: 5380303
    Abstract: A disinfectant or preservative composition particularly adapted for use in ophthalmic preparations such as contact lens disinfecting, cleaning, cushioning, wetting, soaking and reconditioning solutions and additionally in topical medications and tear substitutes, which uses a hydrophilic polymeric antimicrobial agent, namely poly[oxyethylene(dimethylimino) (ethylene dimethylimino)ethylene dichloride] with additional agents including EDTA and alkali salts thereof and a boric acid/borate buffer system.
    Type: Grant
    Filed: August 30, 1993
    Date of Patent: January 10, 1995
    Assignee: Frank J. Holly
    Inventors: Frank J. Holly, Stephen R. Tonge
  • Vegetable draining and storage bag
    Patent number: 5380093
    Abstract: An inexpensive, collapsible, disposable and sealable bag for draining and storing washable goods such as salad vegetables which includes a main storage chamber dimensioned to accept the washable goods of interest, a reservoir positioned beneath the storage chamber and connected to the storage chamber through a series of apertures. When the user revolves the bag, the excess water is driven down away from the washable goods through the apertures and into the reservoir. A channel extending up the side of the bag provides a means for draining the reservoir prior to sealing the bag for storage.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: January 10, 1995
    Inventor: Robert I. Goldman
  • Power control circuit for high intensity discharge lamps
    Patent number: 5381077
    Abstract: A versatile electrical circuit for controlling the operation of a variety of high intensity discharge, high and low pressure sodium, mercury vapor, metal halide, or xenon arc lamps uses a pulse-width-modulator to regulate the alternating or direct current drawn through the lamp from a regulated power source in accordance with the lamp power rating and the desired light intensity setting and in response to the current sensed through the lamp, and may be powered by an AC or DC power source. The circuit uses a H-bridge to apply an alternating voltage to the lamp that does not include any transformer.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: January 10, 1995
    Inventor: Thomas B. McGuire
  • Control circuit responsive to its supply voltage level
    Patent number: 5373227
    Abstract: In an integrated microcircuit device the supply voltage is monitored by a pair of threshold detector logic circuits configured to generate a first control signal when said supply voltage crosses over a minimum level, and a second control signal when said supply voltage crosses over a maximum level. The control signals are used to configure the device into distinct modes of operation, whereby the functions of the device and the voltage level of the power supply applied to them during testing or operation may be controlled by varying the supply voltage.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: December 13, 1994
    Assignee: Micron Semiconductor, Inc.
    Inventor: Brent Keeth
  • Bitumen compositions containing bitumen, polymer and sulfur
    Patent number: 5371121
    Abstract: Disclosed are asphalt compositions prepared from bitumen, a tri-block copolymer of styrene and butadiene, and from about 0.015 to about 0.075 weight percent of elemental sulfur. The asphalt compositions described herein are useful in industrial applications, such as in hot mix asphalts useful in preparing aggregates for road paving.
    Type: Grant
    Filed: June 23, 1993
    Date of Patent: December 6, 1994
    Assignee: Chevron Research and Technology Company
    Inventors: Robert C. Bellomy, Edgar L. McGinnis
  • Process for producing a hydrocarbon product having selectivity for jet fuel
    Patent number: 5366615
    Abstract: A process for producing a hydrocarbon product using a catalyst prepared from an ultra-stable Y-type zeolite having a silica/alumina ratio from about 27 to about 33 with the free acid sites passivated using a basic nitrogen-containing compound. The hydrocarbon product shows improved selectivity for jet fuel.
    Type: Grant
    Filed: April 28, 1992
    Date of Patent: November 22, 1994
    Assignee: Chevron Research and Technology Company
    Inventor: Richard D. Bezman
  • Snowboard equalizing hook
    Patent number: 5356159
    Abstract: A brace shaped and dimensioned to receive the tip of a snowboard-riding boot is swivelingly mounted on the top surface of a snowboard to facilitate the carrying of the board while riding a ski-lift with one foot fully engaged in one of the boot-binding fixture and the other foot engaged into the brace.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: October 18, 1994
    Inventor: Kenneth J. Butterfield
  • Voltage compensating delay element
    Patent number: 5352945
    Abstract: A signal-delaying capacitive circuit applied to a node in a microcircuit device is immunized against the variation of the supply voltage by a metal-oxide semiconductor connected in series between the node and the signal-delaying capacitive circuit. The gate of the semiconductor is biased with a voltage signal proportional to the supply voltage, whereby the resistance of the semiconductor is increased as the supply voltage decreases; thus, isolating the capacitive circuit from the node and reducing the delay.
    Type: Grant
    Filed: March 18, 1993
    Date of Patent: October 4, 1994
    Assignee: Micron Semiconductor, Inc.
    Inventors: Stephen L. Casper, Daniel R. Loughmiller
  • Roof pipe entry hatch
    Patent number: 5349790
    Abstract: A roof pipe entry hatch which includes side walls defining an opening, a cover hinged to one end of the side walls exteriorally of the opening, and a plurality of apertures presented by the side walls for receiving pipes from the exterior of the side walls into the opening, or handling pipes from the interior to the exterior of the building.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: September 27, 1994
    Assignee: Lexsuco Canada Limited
    Inventors: Keith Beetles, David Fulford
  • Coin counting device
    Patent number: 5340356
    Abstract: A device for counting coins, organizing standard bank rolls, and aiding in the wrapping of coins having an upper surface presenting a depression having a cross-section adapted to receive coins, the depression having a first abutment at one end thereof and a second abutment at the other end thereof, marking scale adjacent to the depression located on the upper surface, and a rail projecting upwardly from the upper surface and along the upper surface, merging with the second abutment whereby coins may be measured when bearing against the rail inside or outside of the depression, by viewing the marking scale.
    Type: Grant
    Filed: March 11, 1992
    Date of Patent: August 23, 1994
    Inventor: Donald Cole
  • Polymer-modified asphalt composition and process for the preparation thereof
    Patent number: 5331028
    Abstract: A polymer-modified asphalt composition containing (a) about 80 to 99.7 weight percent of a polymer-asphalt reaction product prepared by reacting (i) about 100 parts by weight of an asphalt having an initial viscosity at 60.degree. C. of from 100 to 20,000 poise, with (ii) about 0.5 to 11 parts by weight a glycidyl-containing ethylene copolymer containing about 0.1 to about 20 weight percent glycidyl moieties and having a weight-average molecular weight of from about 10,000 to about 1,000,000; and (b) about 0.3 to 20 weight percent of a styrene/conjugated-diene block copolymer having a weight-average molecular weight of from about 100,000 to about 1,000,000.
    Type: Grant
    Filed: June 30, 1993
    Date of Patent: July 19, 1994
    Assignee: Chevron Research and Technology Company, a division of Chevron U.S.A. Inc.
    Inventor: Joseph L. Goodrich
  • Industrial asphalts
    Patent number: 5330569
    Abstract: Disclosed is a method of producing an industrial asphalt from a bituminous material. One preferred embodiment comprises mixing together without air-blowing:a. a feed material comprising a bituminous material having a viscosity of at least 50 centistokes at 350.degree. F. and wherein said feed material forms a single phase when mixed with 5 percent of 85 percent phosphoric acid; andb. from about 0.1 to 20.0 percent by weight of phosphoric acid, said mixing being done at a temperature in the range of 351.degree. to 600.degree. F., whereby the softening point of the feed is substantially increased and the penetration is significantly decreased.
    Type: Grant
    Filed: December 18, 1991
    Date of Patent: July 19, 1994
    Assignee: Chevron Research and Technology Company
    Inventors: Edgar L. McGinnis, Judson E. Goodrich
  • Reforming naphtha with large-pore zeolites
    Patent number: 5328595
    Abstract: Catalytic reforming of a naphtha feed with large-pore zeolites containing Group VIII metals and Group IA or Group IIA metal cations.
    Type: Grant
    Filed: November 2, 1992
    Date of Patent: July 12, 1994
    Assignee: Chevron Research and Technology Company
    Inventor: Andrew Rainis
  • Base board
    Patent number: D350405
    Type: Grant
    Filed: July 3, 1991
    Date of Patent: September 6, 1994
    Inventor: Norman B. Crossley
  • Dog leash
    Patent number: D354158
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: January 3, 1995
    Inventor: Stephen F. Trudeau
  • Foldable lap desk
    Patent number: D354636
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: January 24, 1995
    Inventor: Clinton D. Cable
  • Book cover
    Patent number: D354767
    Type: Grant
    Filed: August 2, 1993
    Date of Patent: January 24, 1995
    Inventor: Frank D. Ruskin
  • Helicoidal impeller for use in jet propelled watercraft
    Patent number: D355252
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: February 7, 1995
    Inventor: Paul H. Andersen
  • Collectable miniature mask
    Patent number: D355393
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: February 14, 1995
    Assignee: Miniature Authentic Sports Keepers, Inc.
    Inventors: Jerry Bezener, David Alves
  • Collectable miniature mask
    Patent number: D355394
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: February 14, 1995
    Assignee: Miniature Authentic Sports Keepers, Inc.
    Inventors: Jerry Bezener, David Alves