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

Icon_funbox Did You Know...

...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.

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Examiner: Larkin, Daniel S.


Primary examiner statistics: 1140 patents; average approval time: 1140 days
Assistant examiner statistics: 306 patents; average approval time: 663 days

Patents as Primary Examiner (view all)

Patent No. Patent Title:
7472579 Liquid flow proximity sensor for use in immersion lithography
7461540 Metal-oxide gas sensor
7461542 Funnel viscosimeter
7458264 Generalized inertial measurement error reduction through multiple...
7451634 Chromatographic methods for measuring impurities in a gas sample
7448255 Very high-temperature fluorescent tracer and automation for boile...
7444891 In-water hull cleaning sampling method
7437959 In-water hull cleaning sampling device
7437914 Microfluidic test systems with gas bubble reduction
7434448 Sensor
7434446 System for the transfer and sensing of gas dissolved in liquid un...
7434483 Sample pipette
7430898 Methods and systems for analyzing a specimen using atomic force m...
7430897 Method and apparatus for detecting and locating gas leaks
7430932 Device for telemonitoring the state of aerial power lines(variant...
7430893 Systems and methods for detecting contaminants
7430896 Liquid leak sensing structure
7426851 Gas sensor unit and method of forming the same
7426853 Apparatus for measuring concentration
7421882 Breath-based sensors for non-invasive molecular detection
7412876 System and method for utility metering and leak detection
7409850 Systems and methods for maximizing heat transfer efficiency to an...
7404313 Scanning probe microscope
7404314 Atomic force microscope using a torsional harmonic cantilever
7401497 Microdischarge detector method and apparatus
7401498 Multiple trace portal detection systems
7398676 Leak sensor and leak sensing system
7395692 Portable gas meter
7395695 Apparatus for testing lengths of pipe
7395691 Method and apparatus for determining gas content of subsurface fl...
7392691 Method and apparatus for detecting the level of a liquid
7392692 Surface scan measuring device, surface scan measuring method, sur...
7392690 Systems and methods for monitoring the integrity of a tank
7389674 Sensor
7389688 Indirect liquid level measurement
7387032 Methods and apparatus for measuring the viscoelastic response of ...
7387024 Capacitive type humidity sensor
7387013 Method and system for controlling quality and tracking parts for ...
7387017 Digital Q control for enhanced measurement capability in cantilev...
7383718 Single stage flow modulator for performing comprehensive chromato...

Patents as Assistant Examiner (view all)

Patent No. Patent Title:
6014890 Fast response humidity and temperature sensor device
5918272 Magnetic and ultrasonic discriminator for particle size distribut...
5918264 Fiber monitoring system
5908980 Integrated safety control system for user's gas facility and gas ...
5898105 Leak detection apparatus for tubular fluid lines with fittings
5886249 Micromachined integrated opto-flow gas/liquid sensor
5874669 Scanning force microscope with removable probe illuminator assemb...
5874668 Atomic force microscope for biological specimens
5868027 Measurement of viscosity of a melt in a plasma centrifugal furnac...
5866799 Method of measuring a gas component and sensing device for measur...
5856726 Electric lamp with a threaded electrode
5847270 Stylus attachment for a metrological instrument
5844124 Method and apparatus for measuring odorant concentration and oder...
5834633 Device for concentrating trace components in a liquid
5834643 Capacitive auto-sensing micro-probe
5831151 System and method for monitoring the proportional volume of const...
5824881 Gas/fluid detector for contained fluid systems
5824887 Method and device for measuring the surface tension of a liquid ...
5825124 Cathode-ray tube having activated green and blue phosphors
5824885 Method intended for use in anaesthetic systems for identifying ...
5821404 Test gas leak indicator
5821679 Electron device employing field-emission cathode
5821409 Scanning near-field optic/atomic-force microscope with observing ...
5821399 Automatic test parameters compensation of a real time fluid analy...
5817922 Gas sensor consisting of surface wave components
5817921 Piezoelectric enviromental fluid monitoring assembly and method
5817925 Evaporative emission leak detection system
5817931 Glide detect head with predictable asperity contact region
5814721 Fluid boiling point analyzer
5809825 Sampling device for aerated liquids
5811661 Method for monitoring the functional capability of an exhaust gas...
5802909 Apparatus and methods for monitoring carbon disulphide
5804710 Atomic force microscope system with multi-directional voice coil ...
5804708 Atomic force microscope and method of analyzing frictions in atom...
5804721 Capacitor for water leak detection in roofing structures
5801317 Oxygen/carbon dioxide sensor and controller for a refrigerated ...
5801297 Methods and devices for the detection of odorous substances and ...
5801298 In-line valve seat leak flow testing apparatus
5798609 Flat display screen with a wide inter-electrode spacing
5798603 Cathode ray tube having improved beam convergence
 
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