Patent application number | Description | Published |
20100295438 | Semiconductor Light Source Having a Primary Radiation Source and a Luminescence Conversion Element - A semiconductor light source is provided, the semiconductor light source having a primary radiation source ( | 11-25-2010 |
20110248295 | Lamp - In at least one embodiment of the luminous means ( | 10-13-2011 |
20120146078 | High Efficiency Conversion LED - A conversion LED with a chip which emits primary blue radiation, and a layer containing luminescent substance upstream of the chip which converts at least part of the primary radiation of the chip into secondary radiation, wherein a first garnet A3B5O12:Ce yellow-green emitting luminescent substance and a second nitride silicate M2X5Y8:D orange-red emitting luminescent substance is used, wherein the peak wavelength of the primary radiation is in the range of 430 to 450 nm, in particular of up to 445 nm, while the first luminescent substance is a garnet with the cation A=Lu or a mixture of Lu, Y with up a Y fraction of up to 30%, and wherein B has fractions of both Al and Ga, while the second luminescent substance is a nitride silicate which contains both Ba and Sr as cation M, and in which the doping consists of Eu, wherein the second luminescent substance contains 35 to 75 mol.-% Ba for the component M, remainder is Sr, where X=Si and Y=N. | 06-14-2012 |
20120146079 | Conversion LED with High Color Rendition Index - A conversion LED comprising a chip which emits primary radiation and, positioned upstream of the chip, a luminescent substance-containing layer which converts at least some of the primary radiation of the chip into secondary radiation, wherein a first yellow-green emitting luminescent substance of the A3B5O12:Ce garnet type and a second orange-red emitting luminescent substance of the MAlSiN3:Eu calsine type is used, wherein the peak wavelength of the primary radiation lies in the 435 to 455 nm range, the first luminescent substance being a garnet having essentially the cation A=Lu or Lu in combination with Y, and B simultaneously having fractions of Al and Ga, while the second luminescent substance is of the basic MAlSiN3:Eu type containing Ca as M with a fraction of at least 80%, in particular at least 90%, preferably at least 95%, where M is Ca alone or predominantly Ca and the remainder of M may be Sr, Ba, Mg, Li or Cu, in each case alone or in combination, and wherein some of the Al up to 20%, preferably at most 5%, can be replaced by B, O, F, Cl, alone or in combination. | 06-14-2012 |
20130235557 | LED LIGHT SOURCE AND ASSOCIATED STRUCTURAL UNIT - An LED light source includes a primary light source, in particular at least one blue- or UV-emitting semiconductor chip, the radiation of which is converted partly or completely into longer-wave radiation by a conversion element fitted at a distance, said conversion element being disposed as a dome ahead of the primary light source, wherein the dome is a section of an oblate body having an equator and a pole, wherein the pole points in the direction of the optical axis, wherein the oblate body is flattened in the direction toward the pole relative to the direction toward the equator, and wherein the oblate body is equipped with a converting phosphor layer. | 09-12-2013 |
20130258671 | LIGHTING DEVICE AND METHOD FOR OPERATING A LIGHTING DEVICE - In various embodiments, a lighting device is provided. The lighting device may include an air channel, which extends in an axial direction and which has at least one first opening in the region of a first axial end of the air channel and which has at least one second opening in the region of a second axial end of the air channel; at least one radiation arrangement, which emits electromagnetic radiation and which is arranged on an outer side of the air channel such that it emits the electromagnetic radiation in a direction away from the air channel; and at least one conversion element, which comprises phosphors and which is arranged around the air channel and the radiation arrangement at a predefined distance from the radiation arrangement such that the electromagnetic radiation impinges on the conversion element and excites the phosphors in the conversion element for emitting conversion radiation. | 10-03-2013 |
20140132163 | HIGH-VOLTAGE LED MULTICHIP MODULE AND METHOD FOR ADJUSTING AN LED MULTICHIP MODULE - An LED multichip module may include a plurality of LED chips, which have electrical terminals and are connected in series via electrical connections, and have a designated operating voltage, wherein at least one short-circuiting connection is provided, which connects two of the terminals or connections electrically conductively to one another, and the short-circuiting connection bypasses at least one of the LED chips or a resistor, with the result that the operating voltage is in the range of between 150 V and 350 V. | 05-15-2014 |
Patent application number | Description | Published |
20080287699 | Process for Hydrosilylation - Compounds containing unsaturated carbon-carbon bonds are hydrosilylated with H-silanes or H-siloxanes in the presence of a noble metal catalyst, wherein the water content of the reaction mixture is less than 500 ppm and the noble metal catalyst is supplied as a liquid, and is present in an amount of not more than 50 ppm. | 11-20-2008 |
20090036702 | PRODUCTION OF ORGANOSILANES IN THE PRESENCE OF IRIDIUM-CATALYSTS AND COCATALYSTS - Organosilanes are prepared efficiently by hydrosilylation of an alkene in the presence of iridium compounds as catalysts and an inorganic, metal organic, or organic oxidant as cocatalyst. side reactions and catalyst deactivation are thereby minimized. | 02-05-2009 |
20100004475 | PROCESS FOR PREPARING ISOCYANATOORGANOSILANES - The invention provides a process for preparing silanes which possess an isocyanate function, in which the silanes, after their chemical preparation, are purified and, after the purification, are handled exclusively in an atmosphere with a relative air humidity below 10%. | 01-07-2010 |
20100069656 | PROCESS FOR PREPARING ISOCYANATOORGANOSILANES - Isocyanate-functional silanes, particularly isocyanate-functional α-silanes, are prepared in good yield by a liquid phase thermolysis conducted in the presence of a catalyst at a pressure of >100 mbar, or >80 mbar when a thin-film evaporator is used. | 03-18-2010 |
Patent application number | Description | Published |
20080286618 | FUEL CELL COOLING DEVICE - A fuel cell cooling device has a cooling loop for circulating a coolant fluid. At least during the operation of the fuel cell, an ion extraction medium that is in the liquid state is provided. A method for cleaning a coolant with a corresponding fuel cell cooling device is provided as well. | 11-20-2008 |
20090123811 | ELECTROCHEMICAL CELL AND FUEL CELL INCLUDING IT - An electrochemical cell for extraction of electrical energy is described, which includes a first gas chamber provided with a first gas feeder for a first gas, in which chamber a first electrode is positioned. The cell includes a second gas chamber provided with a further gas feeder for a second gas, in which chamber a second electrode is positioned. The first and second gas chambers are in ion-conducting contact via a diaphragm, and the first and second electrodes form an anode and cathode, respectively, of the electrochemical cell. The first electrode functioning as an anode, the diaphragm, the first gas chamber, and/or the first gas feeder contain an oxygen-storing material. | 05-14-2009 |
20090123815 | Electrochemical energy store - An electrochemical energy store, including at least one electrochemical cell as well as at least one latent heat storage unit, which includes at least one phase change material. The at least one electrochemical cell is a lithium ion accumulator. The exemplary embodiments and/or exemplary methods of the present invention also includes the use of the electrochemical energy store in an electric vehicle or a hybrid vehicle. Furthermore, the exemplary embodiments and/or exemplary methods of the present invention relates to a method for temperature regulation of an electrochemical energy store. | 05-14-2009 |
20090263683 | METHOD AND DEVICE FOR IMPROVING THE SERVICE LIFE OF A FUEL CELL AT TRANSITIONS IN OPERATION - The subject of the present invention relates to a method and a protector for reducing degradation of fuel cell systems at transitions in operation, in particular at electrodes or catalysts in a combustion chamber of a stack of a PEM fuel cell system in startup and shutoff events of the fuel cell system. A switchable material delivery device is provided for varying a delivery of material to the fuel cell system, so that a transition from a first state of the fuel cell system to a second state of the fuel cell system can be initiated, such that a potential difference between different electrodes can be effected. At least one reducing mechanism is provided for reducing the potential difference between the different electrodes during the transition, in which the reducing mechanism includes at least one compensating device for an unequal gas distribution by reducing the proportions causing degradation, to reduce degradation. The compensation device includes at least one short-circuiting unit, with which the different electrodes can be short-circuited, in order to reduce the potential difference. | 10-22-2009 |
20090286115 | METHOD FOR AVOIDING GASEOUS IMPURITY INCLUSIONS IN AT LEAST ONE GAS CHAMBER OF A FUEL CELL DURING AN IDLE PERIOD AND FUEL CELL EQUIPPED WITH MEANS FOR CARRYING OUT THE METHOD - A method and apparatus are provided for avoiding gaseous impurity inclusions in at least one gas chamber of a fuel cell during an idle period of the fuel cell through the production of a positive pressure in the at least one gas chamber. The method includes the steps producing educts that are supplied to the fuel cell for operation of the fuel cell during an operating mode, supplying the educts to the gas chamber so that the gas chamber is at least partially filled with the educts, and filling the gas chamber to produce a positive pressure in the gas chamber and thereby essentially avoiding gaseous impurity inclusions. | 11-19-2009 |
20130022885 | FUEL CELL SYSTEM HAVING IMPROVED FUEL GAS CIRCULATION - The invention relates to a fuel cell system ( | 01-24-2013 |
20140072843 | ELECTROCHEMICAL ENERGY STORE - An electrochemical energy store, e.g., a lithium-ion battery, includes a cell chamber, in which at least one anode, at least one cathode, and an electrolyte, which is situated between the anode and the cathode, are situated, the cell chamber being separated from the external surroundings by a housing, and at least one detection substance for the detection of a leak of the housing being situated in the cell chamber. The energy store configuration allows a leak of the energy store to be detected in a simple way. | 03-13-2014 |