Patents Examined by Jay Politzer
  • Patent number: 6755079
    Abstract: A downhole tool and method for determining the viscosity of a reservoir fluid, the tool including a passage having entry, intermediate and exit regions, in which the reservoir fluid flowing through the passage will have a lower Reynolds number in the intermediate region as compared to the entry region, the tool also including differential pressure gauge for measuring the differential pressure across the intermediate region, and either a velocity controller or fluid velocity meter, for either setting or measuring the fluid velocity.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: June 29, 2004
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Mark A. Proett, Michael T. Pelletier, Wei Han, Bruce H. Storm, Jr., Roger L. Schultz, Thomas E. Ritter
  • Patent number: 6711947
    Abstract: In a borehole logging tool, the flow of conductive fluid into or out of a wellbore at the wellbore wall is detected and measured with a sensor loop proximate the borehole inner wall. The sensor loop includes a series of contiguous sensors that act as electromagnetic flowmeters and provide fluid measurements covering the entire circumference of the sensor loop. The sensor loop includes an elastic element that forces the sensor loop outward to maintain pressure along the sensor loop circumference against the interior borehole wall. The sensor loop is designed to lie at a non-perpendicular angle to the wellbore axis, and mechanical arms press the top and bottom of the loop against the borehole inner wall.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: March 30, 2004
    Assignee: REM Scientific Enterprises, Inc.
    Inventor: Robert E. Maute
  • Patent number: 6709629
    Abstract: A vacuum heat treatment furnace comprising a furnace shell, a casing arranged in an inner side of the furnace shell, a heat insulating layer consisting of a thick plate-like alumina-silica series ceramic fiber blanket and a thin plate-like alumina series ceramic material arranged in an inside of the casing, and a heater arranged in a heating room surrounded by the heat insulating layer.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: March 23, 2004
    Assignee: Dowa Mining Co., Ltd.
    Inventors: Hidetoshi Juryozawa, Keiji Yokose, Fumitaka Abukawa, Jun Takahashi, Hisashi Ebihara
  • Patent number: 6679099
    Abstract: A gas sensor includes a detection element for detecting a gas component of a gas to be measured, a casing for holding the detection element and a seal member forming a reference gas space together with the casing. The seal member has an end surface exposed to the atmosphere and a through-hole for establishing communication between the atmosphere and the reference gas space. A cylindrical insert member is inserted in the through-hole of the seal member. A sheetlike air permeable filter is sandwiched between an inner surface of the through-hole of the seal member and the cylindrical insert member so as to cover an atmosphere side opening portion of the cylindrical insert member. The atmosphere side opening portion of the cylindrical insert member is retracted from the end surface of the seal member toward the interior of the through-hole, whereby an atmosphere side face of the air permeable filter is retracted from the end surface of the seal member.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: January 20, 2004
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Yasuhiro Fujita, Makoto Togawa, Yoshiaki Matsubara
  • Patent number: 6640625
    Abstract: Apparatus for determining the density of a fluid downhole includes apparatus for measuring compressibility of the fluid and apparatus for determining the speed of sound through the fluid. According to the methods of the invention, density of the fluid is calculated based upon the relationship between density, compressibility, and the speed of sound through the fluid.
    Type: Grant
    Filed: May 8, 2002
    Date of Patent: November 4, 2003
    Inventor: Anthony R. H. Goodwin
  • Patent number: 6622542
    Abstract: A bubble detector utilizes an ultrasonic transducer to sample bubbles as they pass the transducer. The envelope of the return signal is analyzed to determine the volume of each sampled bubble. If the total volume of bubbles sampled within a certain period of time exceeds a desired maximum volume, the bubble detector may initiate a system shut down. A bubble detector can be evaluated or calibrated by introducing bubbles into a conduit, detecting the bubbles introduced into the conduit using visual inspection or a bubble detector of known resolution and comparing the results with the examination of a bubble detector under evaluation.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: September 23, 2003
    Assignee: TherOx, Inc.
    Inventors: Daw J. Derek, Jeffrey L. Creech, William R. Patterson
  • Patent number: 6591663
    Abstract: A viscosity and viscoelasticity measuring instrument has a cam, a follower arm, a flat spring, a plate fixture, and a removable plate assembly. The cam is a rotating circular disk with a spiral slot. A cam follower on the follower arm resides in the spiral slot so that the follower arm pivots about its fixed end as the cam rotates. The spring is attached to and collinear with the fixed end of the follower arm so that the spring pivots in the opposite direction as the follower arm. The removable plate assembly has a lower plate and an upper plate with mating sample surfaces on which test fluid is placed. The lower plate fits into a lower jaw of the plate fixture that is attached to the instrument base. The upper plate fits into an upper jaw of the plate fixture attached to the free end of the spring. A fluid is placed on the lower sample surface. The cam rotates, pushing the follower arm up, causing the spring to pivot down, and pressing the sample surfaces together.
    Type: Grant
    Filed: April 10, 2002
    Date of Patent: July 15, 2003
    Assignee: Boston Rheology, Inc.
    Inventors: Paul D. Murray, Alfredo O. Kenig, David Porat
  • Patent number: 6584837
    Abstract: A logging-while-drilling density sensor includes a gamma ray source and at least two NaI detectors spaced apart from the source for determining measurements indicative of the formation density. A magnetometer on the drill collar measures the relative azimuth of the NaI detectors. An acoustic caliper is used for making standoff measurements of the NaI detectors. Measurements made by the detectors are partitioned into spatial bins defined by standoff and azimuth. Within each azimuthal sector, the density measurements are compensated for standoff to provide a single density measurement for the sector. The azimuthal sectors are combined in such a way as to provide a compensated azimuthal geosteering density. The method of the invention may also be used with neutron porosity logging devices.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: July 1, 2003
    Assignee: Baker Hughes Incorporated
    Inventor: Philip L. Kurkoski
  • Patent number: 6502456
    Abstract: A method and an apparatus are disclosed for the measurement of the aridity, temperature, flow rate, total pressure, still pressure, and kinetic pressure of steam at a downhole location within a well through which wet steam is flowing. The apparatus comprises a series of fiber optic sensors that are mounted on sections of a shell assembly. The apparatus is lowered into a well to different downhole locations, and measures the multiple parameters of steam at different locations and heights. The data can be stored on board for subsequent analysis at the surface when the apparatus is retrieved from the well. The apparatus is very reliable, accurate, and of long-life in harsh environments.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: January 7, 2003
    Assignee: Photosonic, Inc.
    Inventor: Yaosheng Chen
  • Patent number: 6490908
    Abstract: The invention relates to a method and a device to determine the gas properties of combustible gas, in particular of natural gas, wherein a) at least part of the combustible gas is exposed to infrared radiation and the amount of infrared radiation absorbed by the combustible gas is determined for two wave lengths or spectral ranges, the two wave lengths or spectral ranges being selected so that the amounts of individual components of the combustible gas in their different percentages have an effect on the amounts absorbed and recorded, b) the thermal conductivity is recorded and c) the gas properties are determined from the three measurands. The term gas properties is understood to mean the gas composition, the gross heating value, the Wobbe number, the normal density and the methane number.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: December 10, 2002
    Assignee: Buhrgas Aktiengesellschaft
    Inventor: Peter Schley
  • Patent number: 6474142
    Abstract: A device for testing the inflation state of an cold gas inflator for an airbag has a gas reservoir that is filled with gas at a high pressure, in particular an inert gas. Oscillations of frequencies varying within a particular frequency range are generated at the filled gas reservoir and the resonance frequency is measured. The measured resonance frequency is compared by a comparator with a resonance frequency which was determined at the gas reservoir filled with the desired pressure.
    Type: Grant
    Filed: October 8, 2001
    Date of Patent: November 5, 2002
    Assignee: Breed Automotive Technology, Inc.
    Inventors: Martin Specht, Thomas Kilian
  • Patent number: 6430994
    Abstract: Process for the continuous determination of the interaction between drilling fluids and shale formations, which comprises: (a) preparation of a water- or oil-based drilling fluid; (b) preparation of a shale sample having at least two flat, parallel opposite surfaces; (c) preparation of the mixture of (b) and (a); (d) continuous measurement of the ultrasonic wave transmission velocity through the sample (c), and variations in thickness (swelling and shrinking) of the shale sample, due to interaction with the drilling fluid (a).
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: August 13, 2002
    Assignees: ENI S.p.A., Enitecnologie S.p.A.
    Inventors: Alberto Marsala, Stefano Carminati
  • Patent number: 6418778
    Abstract: A gas detector equipped with a sensor-monitoring feedback function includes a casing and a base board housing a circuit board therein. The circuit board supports a plurality of electronic elements, including a processor unit consisting of a micro control chip (MCU), two output units including a plurality of LED lights and a buzzer, an input unit including a power supply, a voltage stabilizer and a power breaker circuit, an amplification circuit, a sensor and a detection circuit. The detection is capable of monitoring the sensor for normal function and service, and providing feedback constantly so that users will be alerted immediately to malfunction or out of order condition that necessitate repairs and replacement thereby giving users the best possible protection. The gas detector of the invention will also automatically cutoff electricity supply to the sensor for preventing a gas explosion.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: July 16, 2002
    Inventor: Jong-Jiing Shiau
  • Patent number: 6393906
    Abstract: A method for evaluating sedimentary basins for hydrocarbon potential using aqueous fluid inclusions. Aqueous fluid inclusions are identified in a rock sample. The homogenization temperatures of the fluid inclusions are determined, the optical spectra of the water and methane in the fluid inclusions are measured, and the formation pressures are estimated from the relationship of homogenization temperature and optical spectrum to formation pressure. Formation pressure of the fluid inclusions can be combined with history of the fluid inclusion formation to reconstruct the paleo-history of the basin to evaluate hydrocarbon potential.
    Type: Grant
    Filed: May 30, 2001
    Date of Patent: May 28, 2002
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Maxim O. Vityk, Robert H. Pottorf, Robert J. Chimenti, Patricia H. Kalamaras, Robert J. Bodnar, Jing Leng
  • Patent number: 6360588
    Abstract: The subject invention pertains to the efficient and accurate detection and analysis of materials passing through a membrane. In a specific example the transport of materials through skin is analyzed. The subject method can allow accurate, precise, and specific real time measurements of compounds crossing a membrane. Accordingly, the subject method can save time in product development of pharmaceuticals, cosmetics, and protective clothing products, and can also reduce the need for animal and human testing.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: March 26, 2002
    Inventors: Edward Allan Ross, Ian R. Tebbett, Charles J. Schmidt, Timothy Patrick Griffin, Margaret Wheland Couch
  • Patent number: 6196049
    Abstract: A sensing element, in particular for an electrochemical sensor, for determining the oxygen content of gases, includes at least one first electrode exposed to a measured gas and at least one second electrode exposed to a reference gas. A presintered support receiving a sensing device is provided, a porous adhesion layer, also presintered, being arranged between the support and the sensing device.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: March 6, 2001
    Assignee: Robert Bosch GmbH
    Inventor: Gerhard Schneider
  • Patent number: 6021662
    Abstract: Modelling method for optimizing faster and more realistically the displacement conditions, in a porous medium wettable by a first fluid (water for example), of a mixture of fluids including this wetting fluid and at least another fluid (oil and possibly gas).
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: February 8, 2000
    Assignee: Institut Francais Du Petrole
    Inventors: Jean-Claude Moulu, Olga Vizika, Francois Kalaydjian
  • Patent number: 6012327
    Abstract: A gas sensor and method for manufacturing a gas sensor is provided. In order to increase the selectivity and the sensitivity to a gas to be measured, a gas-sensitive gallium oxide layer of a gas sensor is coated with a filter layer that comprises silicon dioxide. In an alternative embodiment, the gallium oxide layer can be coated with a gas-sensitive metal oxide layer made of titanium oxide, aluminum vanadate, tungsten oxide or tantalum oxide.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: January 11, 2000
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Seth, Maximilian Fleischer, Hans Meixner
  • Patent number: 5801307
    Abstract: A differential capacitive moisture sensor, relying for its operation on the time-varying couplings in two moisture-sensing regions to provide indication of presence of moisture, with selectivity of sensing surface provided by a shielding electrode, and with temperature information provided by a simultaneously-fabricated resistive temperature sensor. Various electrode connections and sensor electronics may be used. An improved differential capacitive moisture sensor has equal dry capacitances, with unequal moisture sensitivities, for providing a single-polarity output signal. An ice detection method and apparatus is also provided.
    Type: Grant
    Filed: January 10, 1997
    Date of Patent: September 1, 1998
    Inventor: Yishay Netzer
  • Patent number: 5677478
    Abstract: A replaceable primary rupture disk placed in the main body of a cylindrical test chamber functions as a safety device and ruptures to relieve pressure from the chamber when the pressure exceeds a selected maximum value. A free piston that is moveable within the cylindrical to separate the chamber into two variable volume compartments is equipped with a replaceable secondary rupture disk that limits the pressure differential across the piston. The secondary disk ruptures at a pressure differential lower than that required to rupture the primary disk. The maximum pressure that can be contained in any chamber is a pressure equal to the sum of the secondary and primary rupture pressures. The maximum pressure that can be contained in one compartment, if the other is at atmospheric pressure, is the burst pressure of the secondary disk.
    Type: Grant
    Filed: May 3, 1996
    Date of Patent: October 14, 1997
    Assignee: Fann Instrument Company
    Inventor: Robert J. Murphy, Jr.