Van Helden
Aalbert Adrianus Van Helden, Den Haag NL
Patent application number | Description | Published |
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20100102163 | Aircraft configured for vertically ascending and landing - An aircraft which is configured for vertically ascending and landing, includes at least two wings ( | 04-29-2010 |
Arend Kuindert Van Helden, Amersfoort NL
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20120119414 | PROCESS FOR MANUFACTURING A SHAPED ARTICLE FROM A COMPOSITE MATERIAL COMPRISING A SOLID FILLER AND A THERMOPLASTIC BINDER - The present invention relates to a process for manufacturing a shaped article from a composite material comprising a solid filler and a thermoplastic binder, said process comprising the following subsequent steps: (a) feeding a solid filler and a thermoplastic binder to a kneading device; (b) mixing the solid filler and the thermoplastic binder in the kneading device, wherein the pressure exerted on the mixture of the solid filler and the thermoplastic binder is in the range of about 100 kPa to about 1500 kPa to obtain a composite material; (c) forming the composite material as obtained in step (b) into a shaped article; and (d)cooling the shaped article as obtained in step (c). The shaped article is preferably a slab which can very suitable be used in the decoration of floors, ceilings, wall panels, vanity tops, kitchen work surfaces, kitchen tops, bathrooms, internal and external cladding and other two-dimensional and three-dimensional shapes by extrusion and or injection moulding techniques. | 05-17-2012 |
20130130009 | THIN SLAB OF A COMPOSITE MATERIAL COMPRISING A SOLID FILLER AND A THERMOPLASTIC BINDER - The present invention relates to an essentially isotropic slab of engineered stone, said slab having a thickness of about 2 mm to about 10 mm and preferably a width of about 0.2 m to about 3.0 m, wherein said slab is made from a composite material comprising about 50 to about 95 wt. % of solid filler and about 5 to about 50 wt. % of a thermoplastic binder, based on the total weight of the essentially isotropic slab, wherein the essentially isotropic slab has a warpage of less than about 1 mm/m. The present invention also relates to a process for manufacturing an essentially isotropic slab of engineered stone. | 05-23-2013 |
Robert S. Van Helden, Appleton, WI US
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20090131570 | PAPER AND COATING MEDIUM FOR MULTIFUNCTIONAL PRINTING - A paper coating includes a combination of a primary pigment and a secondary pigment. The primary pigment includes anionic particles having a particle size distribution where at least 96% of the particles by weight have a particle size less than 2 microns. The secondary pigment is a cationic, grit-free pigment having an average particle size of 3 microns or less. The coating also includes up to 17 weight % of a hydrophilic styrene-butadiene latex based on the weight of the dry pigments and a co-binder. Another embodiment of this invention is a coated base sheet that includes a base sheet to which the above coating has been applied. | 05-21-2009 |
William Arie Van Helden, Bergschenhoek NL
Patent application number | Description | Published |
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20110310368 | METHOD AND SYSTEM FOR THERMALLY CONDITIONING AN OPTICAL ELEMENT - A method for thermally conditioning an optical element includes irradiating the optical element with radiation, not-irradiating the optical element with the radiation, allowing heat flow between the optical element and a conditioning fluid that is held in a conditioning fluid reservoir, and providing a fluid flow of the conditioning fluid, to supply thermally conditioned fluid to the reservoir. A flow rate of the fluid during the irradiating of the optical element is lower than a flow rate of the fluid when the optical element is not-irradiated. | 12-22-2011 |