| Patent application number | Description | Published |
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| 20080203355 | Method for Producing Salts of Hydrocyanic Acid - The present application relates to a process for preparing a solution of cyanide salts, comprising the steps of:
| 08-28-2008 |
| 20090039315 | AQUEOUS SOLUTIONS CONTAINING METAL CYANIDE FOR CYANIDE LEACHING FOR THE WINNING OF GOLD AND SILVER - The present invention relates to solutions comprising water and at least one metal cyanide, at least a part of the water being obtained from wastewater which occurs as depleted wastewater in a process for extracting noble metals from noble metal-containing ores by the cyanide process, the process for the preparation of solutions according to the invention and to the use of the solutions according to the invention in a process for extracting noble metals from noble metal-containing ores by the cyanide process, to a process for extracting noble metals from noble metal-containing ores by the cyanide process, wherein the solution according to the invention is used, and to the use of depleted wastewater occurring in the extraction of noble metals from noble metal-containing ores by the cyanide process to the preparation of solutions comprising water and at least one metal cyanide. | 02-12-2009 |
| 20100021365 | METHOD FOR PRODUCING PRUSSIC ACID - Process for preparing hydrocyanic acid, which comprises catalytic dehydration of gaseous formamide to give a product mixture comprising hydrocyanic acid, water, formamide, ammonia, CO and high boilers, separation of the product mixture by condensation of a condensate comprising water, formamide, high boilers and possibly ammonia and hydrocyanic acid from the product mixture obtained and partial or total recirculation of the condensate into a heat exchanger located downstream of the reactor. | 01-28-2010 |
| 20100284889 | METHOD FOR PRODUCING HYDROCYANIC ACID BY CATALYTIC DEHYDRATION OF GASEOUS FORMAMIDE - A process for preparing hydrogen cyanide by catalytically dehydrating gaseous formamide in a tubular reactor formed from at least one reaction channel in which the catalytic dehydration proceeds, said reaction channel having an inner surface which is formed from a material having an iron content of ≧50% by weight, and no additional catalysts and/or internals being present in the reaction channel, and the at least one reaction channel having a mean hydraulic diameter of from 0.5 to 6 mm, and a reactor with the features specified above and the use of the inventive reactor for preparing hydrogen cyanide by catalytically dehydrating gaseous formamide. | 11-11-2010 |
| 20100316552 | PROCESS FOR PREPARING HYDROGEN CYANIDE BY CATALYTIC DEHYDRATION OF GASEOUS FORMAMIDE - A process for preparing hydrogen cyanide, comprising the provision of gaseous formamide by evaporating liquid formamide in an evaporator (step i)) and the catalytic dehydration of the gaseous formamide (step ii)), and also an apparatus for performing the process according to the invention, comprising at least one microevaporator and a tubular reactor, and the use of a microevaporator for evaporating formamide in a process for preparing hydrogen cyanide from formamide. | 12-16-2010 |
| 20110033363 | PROCESS FOR PREPARING HYDROCYANIC ACID BY CATALYTIC DEHYDRATION OF GASEOUS FORMAMIDE - DIRECT HEATING - Process for preparing hydrocyanic acid by catalytic dehydration of gaseous formamide, wherein the dehydration of formamide is coupled with an exothermic reaction by the reactor used in the dehydration comprising two separate fluid paths which are separated by a common reactor wall, with one fluid path being provided for the dehydration of formamide and the second fluid path being provided for the exothermic reaction. | 02-10-2011 |
| 20110207634 | PREPARING ETHER CARBOXYLATES - The present invention relates to a process for preparing ether carboxylates. | 08-25-2011 |
| 20110207651 | PREPARING ETHER CARBOXYLATES - The present invention relates to a process for preparing ether carboxylates. | 08-25-2011 |
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| 20110273685 | PRODUCTION OF AN ALIGNMENT MARK - A method of production of alignment marks uses a self-aligned double patterning process. An alignment mark pattern is provided with first and second sub-segmented elements. After selecting the dipolar illumination orientation, dipole-X is used to illuminate the pattern and to image the first elements on the wafer, but not the second elements. Alternatively, dipole-Y is used to illuminate the pattern and to image the second elements on the wafer, but not the first elements. In either case, self-aligned double patterning processing may then be performed to produce product-like alignment marks with high contrast and wafer quality (WQ). Subsequently the X and Y alignment marks thus produced are used for the step of alignment in a lithographic process. | 11-10-2011 |
| 20120057159 | Alignment Mark, Substrate, Set of Patterning Devices, and Device Manufacturing Method - An alignment mark determines alignment of a first and a second exposure on a substrate on a macro level and a micro level. The alignment mark includes a first alignment pattern projected during the first exposure and a second alignment pattern projected during the second exposure. The alignment mark includes a first sub-mark at least partially defined by the first alignment pattern and a second sub-mark at least partially defined by the second alignment pattern. Relative positions of the first and second sub-marks on the substrate are representative for alignment of the first and second exposures on the macro level. At least one sub-mark is defined by image lines of the first alignment pattern and the second alignment pattern, and wherein relative positions of image lines of the first alignment pattern and image lines of the second alignment pattern of the at least one sub-mark are representative for alignment of the first and second exposures on the micro level. | 03-08-2012 |
| 20120062863 | Alignment Measurement System, Lithographic Apparatus, and a Method to Determine Alignment in a Lithographic Apparatus - An alignment measurement system measures an alignment target on an object. A measurement illuminates the target and is reflected. The reflected measurement beam is split and its parts are differently polarized. A detector receives the reflected measurement beam. A processing unit determines alignment on the basis of the measurement beam received by the detector. An alternative arrangement utilizes an optical dispersive fiber to guide a multi-wavelength measurement beam reflected from the object to a detector. | 03-15-2012 |
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| 20080271494 | Method for making an optical preform - The present invention relates to a method for manufacturing a preform for optical fibers via a vapor deposition process in which the position of the reversal point near the substrate tube's supply side shifts along the longitudinal axis of the substrate tube during at least part of the deposition process. | 11-06-2008 |
| 20080282743 | Extended-Baking Process for Glass Deposition Tubes - Disclosed is a method of heat treating quartz glass deposition tubes at between 900° C. and 1200° C. for at least 115 hours. The resulting deposition tubes are useful in forming optical preforms that can yield optical fibers having reduced added loss. | 11-20-2008 |
| 20090003787 | METHOD FOR MANUFACTURING A PREFORM AS WELL AS A METHOD FOR FORMING OPTICAL FIBRES FROM SUCH A PREFORM - The present invention relates to a method for manufacturing a preform for optical fibres by means of a vapour deposition process, wherein plasma conditions are created, and wherein the plasma is moved back and forth along the longitudinal axis of the hollow substrate tube between a reversal point near the supply side and a reversal point near the discharge side of the hollow substrate tube, wherein a transition deposition is carried out between the deposition of one phase and the deposition of the other phase. | 01-01-2009 |
| 20090004404 | METHOD FOR MANUFACTURING A PREFORM FOR OPTICAL FIBRES BY MEANS OF A VAPOUR DEPOSITION PROCESS - The present invention relates to a method for manufacturing a preform for optical fibres by means of a vapour deposition process, wherein an intermediate step is carried out between one deposition phase and the next deposition phase(s), wherein the intermediate step comprises supplying an etching gas to the supply side of the hollow substrate tube. | 01-01-2009 |
| 20090173107 | METHOD FOR MANUFACTURING A PREFORM AS WELL AS A METHOD FOR FORMING OPTICAL FIBRES FROM SUCH A PREFORM - A method for manufacturing a preform for optical fibers by means of a vapour deposition process, wherein plasma conditions are created and wherein the plasma is moved back and forth along the longitudinal axis of the hollow substrate tube between a reversal point near the supply side and a reversal point near the discharge side of the hollow substrate tube, so that the location where the soot deposition associated with one phase takes place is axially spaced from the location where the soot deposition associated with the other phase(s) takes place. | 07-09-2009 |
| 20110226020 | Glass-Tube Extended-Baking Process - Disclosed is a method of heat treating quartz glass deposition tubes at between 900° C. and 1200° C. for at least 115 hours. The resulting deposition tubes are useful in forming optical preforms that can yield optical fibers having reduced added loss. | 09-22-2011 |
