Lammens
Henri Lammens, Antwerpen BE
Patent application number | Description | Published |
---|---|---|
20100004407 | Process for the Production of Polyethylene and Ethylene Copolymers - The invention provides a process and an apparatus for the high pressure polymerization of ethylene in which a jet pump is used to pump a fluid into a polymer/monomer product mixture leaving a bumped tubular reactor. The fluid may be recycled monomer or another fluid such as a modifier. | 01-07-2010 |
Henri A. Lammens, Antwerpen BE
Patent application number | Description | Published |
---|---|---|
20110275770 | High Pressure Polymerization Process - The invention relates to high pressure tubular reactor olefin polymerization plants having improved specific energy consumption. The plants may be newly constructed or made by de-bottlenecking an existing plant. The tube of the tubular reactor may have improved arrangements for cooling to increase conversion and optimized polymer-recycle gas separation arrangements using a jet pump for recycling unreacted monomer while permitting haze to be maintained. The improved cooling arrangements include a reduced pressure cooling zone forming the tail end of the tube and/or a shortened heating zone for the front feed and allowing more monomer to be fed as a side feed. | 11-10-2011 |
Henri Aime Lammens, Antwerpen BE
Patent application number | Description | Published |
---|---|---|
20100022736 | Apparatus for the Production of Polyethylene and Ethylene Copolymers - The invention provides an apparatus and a process for the high pressure polymerization of ethylene, optionally with one or more comonomers, in which unreacted monomer is separated from the polymer in a separation system having at least first, second and third separation vessels and in which off gas from the second vessel is recombined back into the product mixture upstream of the first separation vessel, preferably using a jet pump. | 01-28-2010 |
20120240960 | Separation Vessels For Use In Polymerization Processes And Methods For Cleaning Same - Both a system and method for cleaning a low pressure separation vessel of a high pressure polyethylene polymerization plant are provided. The system includes a polytetrafluoroethylene lining that covers the interior surfaces of the vessel, and a cover mounting assembly including an annular clamp for detachably mounting a cover over the vessel. The mounting assembly includes a clamp actuator for quickly securing and releasing the cover with respect to a top rim of the vessel. The vessel is drained of liquid polyethylene and allowed to cool to ambient temperature, thus creating a frozen “skin” of polyethylene around the interior surfaces of the vessel. The clamp actuator releases the cover. The polyethylene skin is peeled off the interior sides the vessel and gathered up at the top to form a neck, thus peeling the polyethylene skin away from the polytetrafluoroethylene lining along with any degraded polymers or other impurities that have accumulated on the interior surfaces of the vessel. | 09-27-2012 |
Johan Lammens, Sant Cugat Barcelona ES
Patent application number | Description | Published |
---|---|---|
20110096344 | Printing System - Method of computing a convex hull in a predetermined color space, comprising determining a print attribute value range pertaining to a reference print attribute value, selecting base NP (Neugebauer Primary) area coverages, comprising area coverages of single NPs and combined NPs, having print attribute values in the print attribute value range, printing and measuring patches corresponding to the base NP area coverages, computing linear combinations of the base NP area coverages, and assigning one of the base NP area coverage or the linear combination of base NP area coverages to the corresponding color, depending on which is closest to the reference print attribute value. | 04-28-2011 |
20120019881 | COLOR PROFILE SELECTION - Scanner, method or computer program product, arranged to sense media color information, store predetermined color values of preselected non-printed media and storing corresponding color profiles adapted for the respective preselected media, and process sensed color values, compare a sensed color value with the predetermined color values, and select one of said color profiles based on the comparison. | 01-26-2012 |
Johan Lammens, Barcelona ES
Patent application number | Description | Published |
---|---|---|
20080247000 | Kueppers' state error diffusion - A method is provided of reproducing continuous tone pixel colors of a color image having many pixels based on Kueppers' device states, wherein the Kueppers' device states of a printing device are the printed pixel colors that are allowed based on Kueppers' color separation and halftoning. The method includes selecting a Kueppers' device state in the proximity of a continuous tone pixel color to be reproduced from the printing device's set of Kueppers' device states, and printing the Kueppers' device state. An error is diffused between the continuous pixel color and the selected Kueppers' device state to one or more pixels in the neighborhood. | 10-09-2008 |
20090310154 | Chromatic Component Replacement - A color-separation LUT and/or algorithm method and apparatus preferably convert input device-color data to output device-colorants, for many color-presentation types—automatically and for arbitrary colorant-set. In one major aspect of the invention, a device-hue ring is defined along six straight edges of a cubical device-hue space (without segments ending at white and black). Preferably coordinates defined along the six segments parametrize the procedure and equipment, i. e. establish colorant indexing by those coordinates (and preferably device-hue). In a second major aspect, plural color transformations—having respective favorable and adverse characteristics—serve different portions of input color space; their outputs merge to combine favorable properties of the transforms. In a third, cusps of the colorant hue planes populate the output side of the hue ring. In a fourth, a colorant sampling technique (faster by several orders of magnitude than exhaustive sampling) canvasses the output space. | 12-17-2009 |
20100214576 | Color Separation into Neugebauer Primary Area Coverage Vectors - The disclosure describes methods for color printing, performing a color separation process and performing a halftoning process. Furthermore, the disclosure describes the color separation process determining one or more Neugebauer Primaries, tessellating the Neugebauer Primaries, and generating one or more Neugebauer Primary area coverage vectors, whose area coverages are linear with respect to a device-independent color space. The disclosure further describes that the color separation process communicates with the halftoning process using one or more Neugebauer Primary area coverage vectors. | 08-26-2010 |
Katja Lammens, Gilching DE
Patent application number | Description | Published |
---|---|---|
20160137635 | THE (S)-ENANTIOMER OF MEPAZINE - The present invention relates to the (S)-enantiomer of mepazine, its applicability in therapy, a pharmacological composition comprising (S)-mepazine, and processes for the preparation of (S)-mepazine and one of its intermediates. | 05-19-2016 |
Koen Lammens, Haverlee BE
Patent application number | Description | Published |
---|---|---|
20100071148 | WIPER BLADE - The invention is based on a wiper blade ( | 03-25-2010 |
Vicky Lammens, Eindhoven NL
Patent application number | Description | Published |
---|---|---|
20100328926 | ILLUMINATION DEVICE WITH LED AND ONE OR MORE TRANSMISSIVE WINDOWS - The invention provides an illumination device ( | 12-30-2010 |