Luehmann
David A. Luehmann, Sammamish, WA US
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20080313415 | Copied file execution authorization using RFID tag - In a method for controlling execution of a digital copy of an original file, a radio frequency identification (RFID) tag read operation is performed using an RFID tag reader. A determination is then made as to whether the physical storage medium is present or absent based on the RFID tag read operation. The digital copy of the original media file is executed when the physical storage medium is determined to be present and execution of the digital copy of the original media file is disabled when the physical storage medium is determined to be absent. | 12-18-2008 |
Erhard Luehmann, Bomlitz DE
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20090053530 | Process for producing hard coating systems based on aqueous polyurethane dispersions - The present invention describes the preparation of an aqueous polyurethane dispersion which is cured by radiation, and its use as binder. | 02-26-2009 |
20090269568 | DEFORMABLE FILM WITH RADIATION-CURING COATING AND SHAPED ARTICLES PRODUCED THEREFROM - The present invention relates to a film, further comprising a radiation-curing coating, wherein the coating comprises a polyurethane polymer which contains (meth)acrylate groups and which is obtainable from the reaction of a reaction mixture comprising (a) polyisocyanates and (b1) compounds which comprise (meth)acrylate groups and are reactive towards isocyanates and wherein the coating further comprises inorganic nanoparticles with an average particle size of ≧1 nm to ≦200 nm. It also relates to a process for the production of such coated films, the use of such films for the production of shaped articles, a process for the production of shaped articles with a radiation-cured coating and shaped articles which can be produced by this process. | 10-29-2009 |
20090269589 | BLOCK-RESISTANT, RADIATION-CURABLE COATING SYSTEMS BASED ON HIGH MOLECULAR MASS, AQUEOUS POLYURETHANE DISPERSIONS - The present invention describes block-resistant, radiation-curable coating systems based on high molecular mass, aqueous polyurethane dispersions, a process for preparing them, the use of the coating systems as paints and/or adhesives, and also articles and substrates provided with these paints and/or adhesives. | 10-29-2009 |
20120041131 | TIN-FREE AQUEOUS POLYURETHANE DISPERSIONS - The present invention relates to radiation-curable coating compositions based on tin-free aqueous polyurethane dispersions based on polyurethane acrylates (i), characterized in that the polyurethane acrylate (i) comprises as builder components | 02-16-2012 |
20120259065 | LOW-VISCOSITY POLYURETHANE ACRYLATE DISPERSIONS - The present invention relates to a process for the preparation of low-viscosity, radiation-curable, aqueous dispersions based on polyurethane acrylates (UV-PUDs), wherein the UV-PUDs hydrophilised via hydroxy-functionalised carboxylic acids have a lower initial viscosity when a large part of the urethanisation, that is to say the reaction of the NCO-functionalised compounds with the OH-functionalised compounds, initially takes place in the absence of the acid-carrying compounds and the incorporation of the acid-carrying compounds via their hydroxyl function takes place as late as possible. | 10-11-2012 |
20130041072 | AQUEOUS POLYURETHANE DISPERSIONS - The present invention relates to radiation-curable, aqueous dispersions based on polyurethane acrylates (i), which are characterized in that the polyurethane acrylate (i) comprises as builder components A) one or more aromatic polyepoxy(meth)acrylates with an OH number of from 20 to 300 mg of KOH/g of substance, C) one or more oligo- or polyesters containing unsaturated fatty acids with an OH number of from 15 to 300 mg of KOH/g of substance and an iodine number of greater than 50 g of I | 02-14-2013 |
20130273359 | USE OF AQUEOUS DISPERSIONS AS PRIMERS - The present invention relates to the use of aqueous UV-reactive primers for the coating of substrates based on ethylene vinyl acetate copolymers (EVA copolymers) or rubber. The present invention further provides a novel method for joining articles using an aqueous UV-reactive primer. | 10-17-2013 |
Erhard Luehmann, Bornlitz DE
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20120160437 | PROCESS FOR THE PRODUCTION OF SIZED AND/OR WET-STRENGTH PAPERS, PAPERBOARDS AND CARDBOARDS - The present invention relates to a process for the production of sized and/or wet-strength papers, paperboards or cardboards, wherein an aqueous radiation-curable dispersion containing water and at least one polymer, characterized in that the polymer contains cationic groups, is mixed with suspended wood pulp and/or chemical pulp and this mixture is sieved, pressed, thermally dried and then radiation-cured, characterized in that the dispersion is employed in amounts, based on its non-aqueous content in relation to the solid content of the wood pulp and/or chemical pulp, of from 0.001 to 10 wt. %, the papers, paperboards and cardboards produced by this process, and compositions comprising suspended wood pulp and/or chemical pulp and an aqueous radiation-curable dispersion containing at least one polymer, characterized in that the polymer contains cationic groups. | 06-28-2012 |
Lars Luehmann, Nuernberg DE
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20140211523 | PEAK DETECTOR WITH IMPROVED FALSE PEAK REJECTION - A peak detector for synchronized switch harvesting on inductor converter includes a comparator and a filter for filtering an input signal to the peak detector and for providing a filtered signal to an input of the comparator. The filter has differentiating and integrating transfer characteristics for low and high frequency ranges, respectively, of the input signal so that peaks of the input signal to the peak detector which have primarily frequency components in the low range cause a relatively strong variation of the filtered signal and peaks of the input signal to the peak detector which have primarily frequency components in the high range are substantially integrated and cause a relatively weak variation of the filtered signal. The relatively strong variation of the filtered signal crosses a threshold of the comparator, which is configured to generate an output signal indicating a relation of the filtered signal regarding the comparator threshold. | 07-31-2014 |
20140218989 | RECTIFIER CIRCUIT WITH AC SIDE SHORT-CIRCUITING FUNCTION AND SYNCHRONIZED SWITCH HARVESTING ON INDUCTOR CONVERTER - Rectifier circuit including a pair of input terminals, a pair of output terminals, and a first circuit interconnecting the pair of input terminals. The first circuit includes an energy storing element and a rectifier bridge, wherein the rectifier bridge includes at least one controllable switching element per bridge branch. An output of the rectifier bridge supplies the pair of output terminals and wherein the at least one controllable switching element per bridge branch is configured to provide a temporary conducting path via the rectifier bridge which bypasses the pair of output terminals and which short-circuits a series connection of the energy storing element and an energy source connectable to the pair of input terminals. A converter for synchronized switch harvesting on inductor including such a rectifier circuit and a method for rectifying an electrical current generated by an energy source are also described. | 08-07-2014 |
Sven Luehmann, Northeim DE
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20110058447 | MIXING SYSTEM - A mixing system has a container with flexible walls ( | 03-10-2011 |