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