Patents
Patents for H01J 13 - Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes (462)
03/2015
03/03/2015US8970113 Time-varying field emission device
01/2015
01/27/2015US8941329 Tunable LED lamp for producing biologically-adjusted light
01/13/2015US8933631 Light emitting diode (LED) lighting fixture
01/13/2015US8933629 Method for controlling ion energy in radio frequency plasmas
12/2014
12/30/2014US8922121 Lighting system, electrode device and light source
12/23/2014US8917462 Optical transmission module and its temperature adjustment method
11/2014
11/18/2014US8890421 Line voltage control circuit for a multi-string LED drive system
11/04/2014US8878437 Apparatus, method, and system for monitoring and maintaining light levels at target area for lighting system
10/2014
10/21/2014US8866414 Tunable LED lamp for producing biologically-adjusted light
10/07/2014US8853961 Discharge lamp lighting device, projector, and driving method of discharge lamp
09/2014
09/23/2014US8841864 Tunable LED lamp for producing biologically-adjusted light
09/18/2014WO2014143100A1 Cold-cathode switching device and converter
08/2014
08/26/2014US8816609 Method and circuit for improving crest factor of gas discharge lamp
08/26/2014US8816585 Light-emitting diode arrangement having a piezo transformer
08/19/2014US8810150 Lamp drive device
08/12/2014US8803426 Modular LED lighting system
07/2014
07/03/2014DE102007051347B4 Vorrichtung und Verfahren zur Bestimmung eines Leistungsverbrauchs einer leistungsverbrauchenden Einrichtung aus einer Mehrzahl von leistungsverbrauchenden Einrichtungen Apparatus and method for determining a power consumption of a power consuming device from a plurality of power consuming devices
06/2014
06/24/2014US8760058 Heat sink and LED illuminating apparatus comprising the same
05/2014
05/06/2014US8716937 Lighting ballast with reduced filament drive and pin current balancing
04/2014
04/15/2014US8698398 Fuse for a LED FL retrofit lamp, LED FL retrofit lamp, and methods for producing a LED FL retrofit lamp
04/02/2014CN101965756B Type recognition of a gas discharge lamp to be operated with an electronic ballast
04/01/2014US8686642 Stabilized high brightness LED suitable as calibration standard
04/01/2014US8686641 Tunable LED lamp for producing biologically-adjusted light
03/2014
03/18/2014US8674977 Driving method of organic electroluminescence emission part
03/04/2014US8664894 Method and device for driving a fluorescent lamp
02/2014
02/25/2014US8659242 Light source apparatus
02/25/2014US8659231 Electronic ballast and method for operation of at least one discharge lamp
02/18/2014US8653724 Spark plug for internal combustion engine having a ground electrode with a protrusion having improved erosion resistance and method of manufacturing same
02/11/2014US8648547 High efficiency LED lighting
02/04/2014US8643280 Method for controlling ion energy in radio frequency plasmas
01/2014
01/21/2014US8633646 Method and apparatus for radio-frequency controllable LED lamp fixture antenna
12/2013
12/17/2013US8610357 LED assembly for a signage illumination
12/17/2013US8610343 Vacuum electron device electrodes and components manufactured from highly oriented pyrolytic graphite (HOPG)
11/2013
11/12/2013US8581506 Discharge lamp driving device and method, light source device, and image displaying apparatus
10/2013
10/22/2013US8564202 LED package and method for manufacturing such a LED package
10/22/2013US8564201 Amalgam-based fluorescent lamp control circuit
10/15/2013US8558473 Light emitting device, light receiving system and image pickup system
10/01/2013US8547038 High pressure discharge lamp lighting device
10/01/2013US8547016 Electric discharge lamp unit
08/2013
08/06/2013US8502453 Drop-in light emitting diode (LED) module, reflector, and flashlight including same
08/06/2013US8502452 High-stability light source system and method of manufacturing
07/2013
07/02/2013US8474985 Projector lamp lighting device supplying AC current including low frequency region having current reduction waveform
06/2013
06/04/2013US8456089 AC driven light-emitting diodes
04/2013
04/09/2013US8414157 Rod light
03/2013
03/14/2013US20130063031 Control Apparatus for a Circuit Arrangement for Operating a Light Source, as well as a System Comprising a Circuit Arrangement and a Circuit Arrangement, as well as a Method for Operating a Light Source
01/2013
01/22/2013US8358089 Solid-state lighting of a white light with tunable color temperatures
01/22/2013US8358078 Fluorescent lamp dimmer with multi-function integrated circuit
01/22/2013US8358072 Circuit arrangement, and method for the operation of a fluorescent lamp
01/22/2013US8358071 OLED lighting device
01/15/2013US8354797 Circuit arrangement for operating a series circuit of at least two low-pressure gas-discharge lamps, and a corresponding method
12/2012
12/25/2012US8339045 Lighting structure
12/11/2012US8330396 Starting device with two input poles
12/06/2012US20120306370 Lighting devices with individually compensating multi-color clusters
12/04/2012US8324828 High-pressure discharge lamp lighting device, high pressure discharge lamp apparatus using this, projector using the high-pressure discharge lamp apparatus, and high-pressure discharge lamp lighting method
11/2012
11/27/2012US8319453 Electronic operating device having an output network for operating at least one discharge lamp
11/27/2012US8319437 Modular LED lighting system
11/20/2012US8314557 Light source device, discharge lamp and its control method
11/06/2012US8304995 Lamp with snow removing structure
11/01/2012US20120274211 LED light bulb
10/2012
10/30/2012US8299711 Protection circuit of T8 LED lighting tube
10/09/2012US8283868 LED light engine
10/03/2012CN102714123A Method and system for power management
09/2012
09/13/2012US20120229025 Vapor-tight lighting fixture
09/11/2012US8264424 Plasma display module and its driving method, and plasma display
08/2012
08/23/2012US20120213504 Method and apparatus for light emitting diode control
08/23/2012US20120212129 Dimmable LED Bulb With Convection Cooling
07/2012
07/31/2012US8232746 High pressure discharge lamp lighting device and lighting fixture using the same
07/31/2012US8232727 Ballast circuit for a gas-discharge lamp having a filament drive circuit with monostable control
07/26/2012US20120187831 LED Lighting System
07/24/2012US8228006 High pressure discharge lamp lighting device and lighting fixture using the same
07/24/2012US8226255 Key button with anti-bacterial light source
07/18/2012EP2476132A1 Method and system for power management
07/05/2012US20120169228 External electrical-control lamp with improved structure
07/05/2012US20120169227 LED based lamp replacment
06/2012
06/28/2012US20120161628 Led illuminating device
06/28/2012US20120161627 Led illuminating device
06/28/2012US20120161626 Led lamp with high color rendering index
06/28/2012US20120161625 Light emitting diode lighting device
06/14/2012US20120146512 Led lighting module and lighting device using the module
06/14/2012US20120146503 Linear led lamp
06/07/2012US20120139418 Rod light
05/2012
05/31/2012US20120133265 Liquid anode radiation source
05/22/2012US8183782 High-pressure discharge lamp with improved ignitability and high-voltage pulse generator
05/17/2012US20120119647 Potential control of heat sink in solid-state light device
05/01/2012US8169146 Metal halide lamp
05/01/2012US8167676 Fluorescent lighting system
04/2012
04/26/2012US20120098434 Led light assembly and associated method
04/24/2012US8164266 High pressure discharge lamp lighting apparatus
04/10/2012US8154211 End-of-life protection circuit and method for high intensity discharge lamp ballast
03/2012
03/20/2012US8138676 Methods and systems for dimmable fluorescent lighting using multiple frequencies
03/08/2012US20120056542 High Illumination LED Bulb with 360-Degree Full Emission Angle
03/01/2012US20120049735 Lighting device
02/2012
02/28/2012US8125154 Automatic lamp detection method and optimal operation for fluorescent lamps
02/23/2012US20120043885 Led lamp with circling led modules and encapsulation
02/21/2012US8120286 Control system for fluorescent light fixture
02/21/2012US8120257 Organic electroluminescence lighting device
02/16/2012US20120038272 Led and thermal management module for a vehicle headlamp
02/14/2012US8115395 Self-dusting lamp device
02/09/2012US20120032589 Light emitting diode lamp
02/02/2012US20120025708 Light emitting diode bulb using thermal conductor
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