U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

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Fitzgerald, John


Primary examiner statistics: 295 patents; average approval time: 296 days
Assistant examiner statistics: 349 patents; average approval time: 353 days

Patents as Assistant Examiner


1                  
NumberTitleIssue Date
7748253Vent and soil flux measurement system
A method and apparatus are provided for maintaining pressure inside a closed chamber equal to the changing outside pressure, detecting leaks in the plumbing (i.e., air handling system) of a trace gas flux measurement system, and estimating the kinetic volume, e.g., ...
07/06/2010
7574907Apparatus and method for fluid flow measurement with sensor shielding
Methods and apparatuses for detecting radial flows of conductive fluid are provided. In an embodiment of the present invention, shields are used to prevent or reduce circulating electrical currents from causing a voltage difference that would adversely affect the me...
08/18/2009
7571643Apparatus and method for downhole dynamics measurements
Aspects of this invention include a rotary steerable steering tool having a sensor arrangement for measuring downhole dynamic conditions. Rotary steerable tools in accordance with this invention include a rotation rate measurement device disposed to measure a differ...
08/11/2009
7568375Gas sensor, gas sensor system, and controlling method thereof
A gas sensor disposed on a wall of a gas passage, the gas sensor including: a gas detector detecting a target gas contained in the gas flowing in the gas passage; a detector which houses therein the gas detector and has a gas chamber into which the gas is introduced...
08/04/2009
7530257Phased micro analyzer VIII
A micro fluid analyzer that may be highly sensitive, fast and very compact. The analyzer may use sufficiently low power per analysis to be easily implemented with an equivalently small battery pack or other portable power source. There may be energy conservation fea...
05/12/2009
7523637Methods for controlling one or more parameters of a flow cytometer type measurement system
Various methods for controlling one or more parameters of a flow cytometer type measurement system are provided. One embodiment includes monitoring parameter(s) of the measurement system during measurements of sample microspheres. The method also includes altering t...
04/28/2009
7516641Flow sensor methods and apparatus
Apparatus and methods of calibrating a microfluidic flow sensor, in which the flow of a fluid through a flow sensor is stopped and a first value is read from the flow sensor, then the fluid is pumped through the flow sensor sequentially at first and second selected ...
04/14/2009
7516655Downhole fluid characterization based on changes in acoustic properties with pressure
Techniques for evaluating physical aspects of a formation fluid from within a wellbore include changing pressure on a sample of the formation fluid and transmitting at least one acoustic pulse through the fluid sample and analyzing acoustic information collected. Ap...
04/14/2009
7516654Method and apparatus for downhole detection of CO2 and H2S using resonators coated with CO2 and H2S sorbents
A formation fluid sample is exposed to a rigidly-supported semi-permeable membrane such as silicone rubber to permit diffusion of gases and vapors from the formation fluid into a vacuum chamber, while at the same time, blocking the passage of any liquids. The membra...
04/14/2009
7500380Measuring distance using gas gauge proximity sensor
In a gas gauge, effects due to changes in the local environment are reduced by causing a measurement nozzle and a reference nozzle to react as if they were co-located, or located at approximately the same position. This is achieved by venting the reference nozzle in...
03/10/2009
7500389Tubing expansion
A method of expanding a tubular downhole comprises mounting a sensing device in a downhole tubular to be expanded, expanding at least a portion of the tubular and then engaging the sensing device with a retrieving device. The sensing device is then translated throug...
03/10/2009
7490507Method for determining the movement of a blast movement monitor and associated rock as a result of blasting operations
A method for measuring the movement of boundaries between different portions of a heterogeneous rock body is disclosed. The method comprises placing a plurality of blast movement monitors 109 in a rock body prior to blasting and noting the position of each bl...
02/17/2009
7490515Liquid level measuring system
A non-contact type sensor that measures a liquid level in a non-contact fashion and outputs a measured value as a digital pulse is provided. Then, a sensor-output converting circuit is caused to input the digital pulse, which is output from the non-contact type sens...
02/17/2009
7487677Apparatus and methods for monitoring water consumption and filter usage
Apparatus and methods for employing electrical properties of water to indicate the level of filtered water in a filtered water container. The container is fitted with a hopper that holds unfiltered water. The hopper is fitted at its base with a removable and replace...
02/10/2009
7484403Method and device for determining at least one dynamic property of a deformable solid or fluid material
Method of determining at least one dynamic characteristic of a sample of a deformable solid or fluid material, comprising: the contacting of said sample (24, 42) with at least one interaction surface (23, 25, 41a, 41b); the applica...
02/03/2009
7481094Gas sensor control unit
A gas sensor control unit (1) including a single signal-switching and outputting circuit (33) adapted for switching and outputting plural signals transmitted from plural gas sensors (8,9). ...
01/27/2009
7481097Method and device for measuring the surface tension of liquids
A method and device for measuring the surface tension of liquids uses the bubble pressure principle, wherein a parameter relating to a bubble formed using a defined gas mass flow rate or volume flow rate is measured at the tip of a capillary tube immersed in the liq...
01/27/2009
7472588Petrophysical fluid flow property determination
A method and apparatus for determining petrophysical parameters within a geologic formation pressurizes a geologic sample through a set of predetermined effective pressures, energizes the sample at each predetermined effective pressure with an electric current and/o...
01/06/2009
7472580Pressure sensor
A vacuum-driven gas gauge proximity sensor for sensing a difference between a reference surface standoff and a measurement surface standoff is disclosed. Unlike existing proximity sensors, the vacuum-driven gas gauge proximity sensor uses a vacuum to reverse the tra...
01/06/2009
7469574Liquid type identifying method and liquid type identifying device
A liquid type identifying method and device for correctly and quickly determining whether or not a liquid is a predetermined one. An identifying sensor unit (2) so disposed as to face a flow passage (24) of a liquid to be measured has an indirect-heati...
12/30/2008
7467552Miniature package for translation of sensor sense axis
A ceramic L-shaped or T-shaped packaging apparatus for a Micro Electro-Mechanical System (MEMS) inertial sensor die that translates the sensor sense axis perpendicular to the normal input plane for direct attachment to a system-level printed circuit board (PCB)....
12/23/2008
7467537Seam abrasion testing device and method of use
There is provided a testing device for testing the seam of a garment that includes a mechanical abrader frame holding elongate members and a control unit. The mechanically oscillating elongate members are each connected to an actuator located within the frame. A tes...
12/23/2008
7464588Apparatus and method for detecting fluid entering a wellbore
The method and apparatus of the present invention provides for detecting a flow of a formation fluid entering into a wellbore. An ultrasonic sensor is placed in a wellbore. The sensor has a resonant member that is exposed to a fluid in the wellbore. At a location in...
12/16/2008
7461544Methods for detecting water induction in steam turbines
A method of detecting water induction in a steam turbine that may include the steps of: measuring the temperature of one of the steam lines of the steam turbine at regular intervals; recording the temperature measurements; and determining, from the recorded temperat...
12/09/2008
7454955Leak detection structure
One embodiment of a leak detection structure includes a sensor having a leak detection surface and a wicking structure positioned adjacent the leak detection surface, the wicking structure adapted for wicking a fluid onto the leak detection surface. ...
11/25/2008
7453266Electronic humidity chamber for vapor desorption to determine high capillary pressures
The present invention relates to the use of an electronically controlled humidity chamber with temperature controls: to determine, by vapor desorption, high capillary pressures of core samples; to produce core samples with a high capillary pressure for testing elect...
11/18/2008
7448256System and method for determining the leakproofness of an object
A system and a method for determining the leakproofness of an object having a first cavity. The system includes a closed chamber having a second cavity arranged to envelope the object, an evacuator for lowering the pressure inside one of the cavities, a supply for s...
11/11/2008
7444861Real time management system for slickline/wireline
A real-time line management system and associated methods. A line management system for use in conjunction with an operation in a subterranean well includes a line installed in the well during the operation, and a computing device which indicates a used life of the ...
11/04/2008
7441441Automatic leak detection and isolation system for a pipeline
An automatic leak detection and isolation system for a fluid pipeline (3) comprising a pipeline section (1) through which the fluid flows, the pile line section comprising an inner section (5) through which the fluid flows and a sleeve (9...
10/28/2008
7441440Thin semiconductor film gas sensor device
The gas sensor device of the semiconductor film type comprises, on a single face of it, at least one gas sensor, a resistive heating film and pads for electrical contact of the sensors and of the resistive heating film; the heating element, the gas sensor film and t...
10/28/2008
7430931Microgranulometry and methods of applications
An apparatus and process for measuring the granulometry separations in discrete media and unconsolidated sediments for relatively small sample quantities (5 cc containers of drilling cuffings) is disclosed. A small diameter glass tube may be filled with a small amou...
10/07/2008
7424819Gas sensor
A gas sensor in which respective terminal leads are fitted and connected to respective electrodes on inner and outer circumferential surface of a hollow, cup-shaped detection element When a leading end connecting portion of a terminal lead (71, 91) is dispose...
09/16/2008
7421893Bullet test tube and method
A bullet test tube (10) is taught having a media (22) for measuring a wound cavity (20), bullet penetration (52) and recovering a bullet (30) from a discharged firearm. The bullet test tube is made with an integral cylindrical tube...
09/09/2008
7418854Formation gas pore pressure evaluation on drilling cuttings samples
We disclose an apparatus and process for measuring the Formation Gas Pore Pressure in drilling cuttings samples in the test tube. The Apparatus consist of vertical holder for test tube, for placing the cutting sample and pipette for adding measurable quantity of liq...
09/02/2008
7412881Fluid flowrate determination
A method and apparatus are useful for determining the flowrate of fluid flowing within a passage. The method comprises the step of measuring the equilibrium temperature of a location of interest within or proximate to the passage within which fluid flows. The temper...
08/19/2008
7409880System useful for holding a sample and in subjecting the sample to chromatographic analysis
A robotic system for handling components during chromatographic analysis of a sample includes a holder for positioning a sample within a separation pathway, the holder including a first opening having an internally tapered shape and a second opening having an extern...
08/12/2008
7409861Concentration detector
A concentration detector is adapted to detect the concentration of a liquid fuel in a container. The concentration detector comprises a rotating mechanism positioned underneath the level of the liquid fuel and having a rotational center. A first float having a speci...
08/12/2008
7409858Method for monitoring fluid properties
A method for monitoring fluid properties with a distributed sensor in a wellbore having an inner surface, a top and a bottom comprising causing the distributed sensor to assume a helical shape, pulling the distributed sensor towards the bottom of the wellbore, while...
08/12/2008
7406854Gas sensor
A gas sensor is provided that is delimited from the environment with a preferably replaceable cap (8) made of a porous, gas-permeable and water-impermeable material, especially sintered PTFE. The gas sensor is protected against environmental moisture and can ...
08/05/2008
7406857Electronic humidity chamber for vapor desorption to determine high capillary pressures
The present invention relates to the use of an electronically controlled humidity chamber with temperature controls: to determine, by vapor desorption, high capillary pressures of core samples; to produce core samples with a high capillary pressure for testing elect...
08/05/2008
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