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

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...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!

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Examiner: Kwon, John T.


Primary examiner statistics: 2650 patents; average approval time: 2649 days
Assistant examiner statistics: 554 patents; average approval time: 640 days

Patents as Primary Examiner (view all)

Patent No. Patent Title:
8113174 Method for determining the ethanol content of the fuel in a motor...
8100112 Fuel-supply quantity estimating apparatus and fuel injection syst...
8082903 Method for operating an injector
8073612 Rotational generation type wireless oxygen sensor
8051823 Combined actuator with rheological control brake
8046154 Method for controlling continuous variable valve timing apparatus
8037865 Self-contained compression brake control module for compression-r...
7654253 Detection of a humidity sensor failure in an internal combustion ...
7463970 Torque based engine speed control
7461633 Method of controlling the combustion phase of an internal-combust...
7458353 Automatic internal combustion engine stop device, internal combus...
7458360 Motor driving type throttle apparatus
7458361 Method for operating an internal combustion engine
7455046 Nitrogen enriched combustion of a natural gas internal combustion...
7454281 Fault diagnosis apparatus for sensors used in a system
7451037 Learning method of injection characteristic and fuel injection co...
7451036 Control apparatus and control method for internal combustion engi...
7449994 Engine mounted fault indicators
7444999 Control system and method for internal combustion engine
7441544 Control device for internal combustion engine
7441538 Method for auto-ignition operation and computer storage device fo...
7441536 Internal combustion engine with direct fuel injection
7444226 Electronic control device and method for controlling the operatio...
7438046 Failure detection apparatus for variable valve timing and lift co...
7438066 Method and device for controlling an internal combustion engine
7438061 Method and apparatus for estimating exhaust pressure of an intern...
7438045 Method of operating an internal combustion engine
7438048 Fuel injection amount control apparatus for internal combustion e...
7431016 System for controlling evaporative emissions
7431009 Method for operating an internal combustion engine
7428891 Outboard motor equipped with internal combustion engine with carb...
7428459 Apparatus for controlling an engine using a cam signal
7424882 Engine method
7424361 Driving force controller for a vehicle
7418942 Control apparatus and control method for internal combustion engi...
7418956 Ignition apparatus for an internet combustion engine
7421333 Monitoring system for internal combustion engine
7415964 Fuel injection control apparatus designed to minimize combustion ...
7412954 Start-up control for internal combustion engine
7412967 Engine controller

Patents as Assistant Examiner (view all)

Patent No. Patent Title:
5022823 Rotor attachment assembly
5022821 Variable pitch fan
4976587 Composite wind turbine rotor blade and method for making same
4961686 F.O.D.-resistant blade
4950129 Variable inlet guide vanes for an axial flow compressor
4948332 Method of preventing surge in a turbocompressor by regulating blo...
4948336 Mechanical shaft seal
4946346 Gas turbine vane
4946343 Method of regulation that prevents surge in a turbocompressor
4946348 Centrifugal fan with airfoil vanes in annular volute envelope
4946347 Turbine blade for hydroelectric generators
4946354 Hydraulic device for individual control of pitch of a rotor blade
4946345 Turbo-molecular pump
4944652 Process and device for the control of turbo compressors
4944653 Plastic centrifugal pump
4944654 Split scroll for centrifugal blower
4943209 Hub for a plastic blower impeller
4941805 Device for centering a drive shart on a hub
4940384 Molten metal pump with filter
4940388 Cooling of turbine blades
4940390 Turbine system having more failure resistant rotors and repair we...
4940386 Multiple flow turbojet engine with an outer ring of the fan outle...
4938658 Method of reliably operating turbocompressors
4938662 Mechanical pump equipment
4936741 Method of regulation that prevents surge in a turbocompressor by ...
4936742 Water pump apparatus having lubricating oil circulation and axial...
4936740 Method of protecting a turbocompressor from surging by blowing of...
4934900 Assembly forming a cylindrical cage of spaced apart vanes
4934899 Method for containing particles in a rotary machine
4932837 Centrifugal pump for liquids
4932834 Ring channel blower
4932838 Fluid apparatus
4932833 Ring channel blower
4930980 Cooled turbine vane
4930979 Compressors
4930989 Fixed-angle keying piece for blades of axial fans
4930987 Marine propeller and hub assembly of plastic
4930981 Low noise impeller
4930978 Compressor stage with multiple vented inducer shroud
4929149 Gas blower
 
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