Peter Keller
Peter Keller, Spiesen-Elversberg DE
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20100105833 | WATER-EMULSIFIABLE POLYISOCYANATES - The present invention describes a process for preparing water-emusifiable polyisocyanate. | 04-29-2010 |
20100183883 | WATER-DISPERSIBLE POLYISOCYANATES - The present invention relates to improved water-dispersible polyisocyanates intended more particularly for two-component polyurethane coating materials. | 07-22-2010 |
Peter Keller, Krailling DE
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20090017220 | Method for a layer-wise manufacturing of a three-dimensional object - A method for a layer-wise manufacturing of a three-dimensional object has a first step of providing a layer of a material in powder form or a liquid material on a support or a layer that has already been solidified at selected positions previously and a second step of directing a focussed photon or particle beam ( | 01-15-2009 |
20090321998 | Rounded-Particle Plastic Powder in Particular for Application in Laser Sintering, Method for Production of Such a Powder and Laser Sintering Process Using Such a Powder - In a laser sintering method for producing a three-dimensional object wherein subsequent layers of the object to be formed are subsequently solidified on positions corresponding to the object, as a build-up material, a powder is used wherein the upper grain limit of the powder particles is below 100 μm, the D | 12-31-2009 |
20100140550 | Method for identifying laser sintering powders - A method is presented that makes possible the labelling of powders that can be applied as building material in a layer-additive manufacturing method such as a selective laser sintering method. To this effect the powder is mixed with at least one salt of a metal of the rare earths, wherein the salt has the property that it shows a luminescence when being irradiated with photons having a wavelength outside of the visible spectrum or with particle radiation. Thereby, parts that have been manufactured by means of the layer-additive manufacturing method can be identified with regard to the manufacturer, the place of manufacture or the manufacture date. | 06-10-2010 |
20120070666 | Rounded-Particle Plastic Powder in Particular for Application in Laser Sintering, Method for Production of Such a Powder and Laser Sintering Process Using Such a Powder - In a laser sintering method for producing a three-dimensional object wherein subsequent layers of the object to be formed are subsequently solidified on positions corresponding to the object, as a build-up material, a powder is used wherein the upper grain limit of the powder particles is below 100 μm, the D | 03-22-2012 |
20120267813 | Device For A Layerwise Manufacturing Of A Three-Dimensional Object And Method For Supplying A Building Material | 10-25-2012 |
Peter Keller, Osthofen DE
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20130129497 | EXHAUST-GAS TURBOCHARGER - The invention relates to an exhaust-gas turbocharger ( | 05-23-2013 |
Peter Keller, Steinfurt DE
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20130251980 | POLYURETHANE AND POLYISOCYANURATE FOAMS - Embodiments of the invention provide for polyurethane or polyisocyanurate foam formulations. The formulations include a formulated polyol, a polyisocyanate, and a blowing agent such that the stoichiometric index of the polyisocyanate to the formulated polyol is above 250. The formulated polyol includes (i) from about 20 to about 60 percent by weight of an aromatic polyester polyol, (ii) from about 10 to about 30 percent by weight of a Novolac-type polyether polyol, and (iii) from about 5 to about 40 percent by weight of a polyether polyol including a sucrose- or sorbitol-initiated polyol. Components (i), (ii), and (iii) are selected so that the formulated polyol as a whole has an average functionality of at least about 2.4. | 09-26-2013 |
Peter Keller, Tinton Falls, NJ US
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20140119250 | MECHANISM TO FACILITATE TIMING RECOVERY IN TIME DIVISION DUPLEX SYSTEMS - In general, the present invention relates to systems and methods to facilitate timing recovery and loop timing operations in a TDD communication system with significantly varying intervals of inactivity between periods of transmission. According to certain aspects, to facilitate timing recovery, embodiments of the invention define a maximum period of inactivity for each mode of transmission and associated “timing keep alive” signals during and/or between transmissions to assist the timing recovery function in the receiver. In embodiments, the receiver selects the desired format of the “timing keep alive” signal. According to further aspects, the timing recovery mechanisms of the invention maintain power saving objectives of G.fast, where power dissipation varies near linearly with traffic demand. | 05-01-2014 |