Patents by Inventor Roland Groenen
Roland Groenen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20200017952Abstract: Method to increase the wettability of a substrate by providing the substrate at least partially with a conductive, metal free, hydrophilic carbon based coating. The carbon based coating is doped with nitrogen and has an electrical resistivity lower than 108 ohm-cm. An adhesion promoting layer is applied on the substrate before the application of the carbon based coating. The adhesion promoting layer includes at least one element of the group consisting of silicon and of the elements of group IVB, the elements of group VB and the elements of Group VIB of the periodic table, wherein the carbon based coating includes a nitrogen doped diamond-like carbon (DLC) coating of amorphous hydrogenated carbon (a-C:H) and a nitrogen doped diamond-like nanocomposite (DLN) coating comprising C, H, O and Si.Type: ApplicationFiled: September 23, 2019Publication date: January 16, 2020Applicant: OERLIKON SURFACE SOLUTIONS AG, PFAEFFIKONInventors: Erik DEKEMPENEER, Matthew P. KIRK, Roland GROENEN, Cyndi L. ACKERMAN, Chandra VENKATRAMAN
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Patent number: 9931766Abstract: A method to make sawing beads by means of laser cladding is disclosed whereby metal matrix powder is molten by means of a laser beam on a rotating sleeve while diamonds are thrown in the molten metal pool. By carefully controlling the temperature of the molten metal pool at or above 1150° C. for less than 200 ms the internal graphitization of the diamonds can be limited. Although some of the diamonds in the sawing bead show internal graphitization it is demonstrated by the inventors that a sawing cord using the bead obtained by the method has an above standard sawing performance.Type: GrantFiled: April 2, 2014Date of Patent: April 3, 2018Assignee: NV BEKAERT SAInventors: Jan Vaneecke, Tom Baekelandt, Roland Groenen
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Publication number: 20160039115Abstract: A method to make sawing beads by means of laser cladding is disclosed whereby metal matrix powder is molten by means of a laser beam on a rotating sleeve while diamonds are thrown in the molten metal pool. By carefully controlling the temperature of the molten metal pool at or above 1150° C. for less than 200 ms the internal graphitisation of the diamonds can be limited. Although some of the diamonds in the sawing bead show internal graphitisation it is demonstrated by the inventors that a sawing cord using the bead obtained by the method has an above standard sawing performance.Type: ApplicationFiled: April 2, 2014Publication date: February 11, 2016Applicant: NV BEKAERT SAInventors: Jan VANEECKE, Tom BAEKELANDT, Roland GROENEN
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Patent number: 9254527Abstract: A method is described for producing a sawing bead for use in a sawing cord. Sawing cords are used for cutting hard and brittle materials. In the method, laser cladding is used to form an abrasive layer on a small metallic tube (204) or sleeve. The abrasive layer (220) comprises a metal matrix material in which abrasive particles such as diamond, cubic boron nitride or other hard cutting materials are embedded. The metal matrix material preferably comprises an active metal that improves wetting and adhesion of the abrasive particles. Although the abrasive particles are relative large—with a particle size in excess of 100 ?m—they are evenly distributed throughout the abrasive layer. This is achieved by letting the tube (204) rotate relative to the laser cladding system possibly in combination with a relative axial movement so that the cladding track loops on itself thereby forming an abrasive layer (220). Additionally the method allows to shape the sawing bead for improved geometrical tolerances and centricity.Type: GrantFiled: March 2, 2012Date of Patent: February 9, 2016Assignee: NV BEKAERT SAInventors: Jan Vaneecke, Roland Groenen, Tom Baekelandt
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Patent number: 9200405Abstract: The invention relates to cord (20) comprising a number of filaments twisted together. The peripheral surface of the cord (20) is at least partially coated with an adhesion promoting coating (24). The adhesion promoting coating (24) comprises at least a first layer comprising a silicon based coating, a titanium based coating, a zirconium based coating or a combination thereof. The invention further relates to a composite material comprising such a cord (20) embedded in a polymer material. Furthermore the invention relates to a method to manufacture such a cord (20).Type: GrantFiled: December 11, 2009Date of Patent: December 1, 2015Assignee: NV BEKAERT SAInventors: Tom Baekelandt, Roland Groenen, Kris Van Hege
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Patent number: 8807126Abstract: A sawing rope (270) with abrasive elements (506) fixed on a steel rope (502) with a polymer jacket (504) is described and claimed. The abrasive elements (506) are made of a metallic sleeve on which an abrasive layer is deposited by means of electrolytic deposition, by means of sintering or by means of cladding for example laser cladding. Characteristic about this sawing rope (270) in view of the prior known sawing ropes is that each sleeve shows a connection or closure. Such a connection makes it possible to attach abrasive elements (506) on the rope without having to thread them on the rope (270) as is needed when making prior-art sawing ropes. The inventive sawing rope (270) can therefore be made in long lengths in a very efficient way.Type: GrantFiled: November 16, 2010Date of Patent: August 19, 2014Assignee: NV Bekaert SAInventors: Tom Baekelandt, Roland Groenen, Steven Van Der Linden, Peter Persoone
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Publication number: 20140000579Abstract: A sawing bead for use in a sawing cord is described and claimed. Sawing cords are used for cutting hard and brittle materials. The sawing bead comprises a tubular metallic sleeve on which an abrasive layer is deposited. The abrasive layer comprises a metal matrix material in which abrasive particles are held. Special about the bead is that the metal matrix material shows a dentritic structure in a metallographic cross section which is a result of the way it has been produced namely by laser cladding. The abrasive layer adheres very well to the sleeve as a metallurgical bonding layer is present between the abrasive layer and the sleeve. Abrasive particles are present down to this bonding layer thereby improving the useful life of the bead as no brazing layer is present between abrasive layer and sleeve as in prior-art beads. In the metal matrix material active metals are present that enhance the wetting and adhesion of the abrasive particles.Type: ApplicationFiled: March 3, 2012Publication date: January 2, 2014Inventors: Jan Vaneecke, Roland Groenen, Tom Baekelandt
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Publication number: 20130333681Abstract: A method is described for producing a sawing bead for use in a sawing cord. Sawing cords are used for cutting hard and brittle materials. In the method, laser cladding is used to form an abrasive layer on a small metallic tube (204) or sleeve. The abrasive layer (220) comprises a metal matrix material in which abrasive particles such as diamond, cubic boron nitride or other hard cutting materials are embedded. The metal matrix material preferably comprises an active metal that improves wetting and adhesion of the abrasive particles. Although the abrasive particles are relative large—with a particle size in excess of 100 ?m—they are evenly distributed throughout the abrasive layer. This is achieved by letting the tube (204) rotate relative to the laser cladding system possibly in combination with a relative axial movement so that the cladding track loops on itself thereby forming an abrasive layer (220). Additionally the method allows to shape the sawing bead for improved geometrical tolerances and centricity.Type: ApplicationFiled: March 2, 2012Publication date: December 19, 2013Inventors: Jan Vaneecke, Roland Groenen, Tom Baekelandt
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Publication number: 20120210993Abstract: A sawing rope (270) with abrasive elements (506) fixed on a steel rope (502) with a polymer jacket (504) is described and claimed. The abrasive elements (506) are made of a metallic sleeve on which an abrasive layer is deposited by means of electrolytic deposition, by means of sintering or by means of cladding for example laser cladding. Characteristic about this sawing rope (270) in view of the prior known sawing ropes is that each sleeve shows a connection or closure. Such a connection makes it possible to attach abrasive elements (506) on the rope without having to thread them on the rope (270) as is needed when making prior-art sawing ropes. The inventive sawing rope (270) can therefore be made in long lengths in a very efficient way.Type: ApplicationFiled: November 16, 2010Publication date: August 23, 2012Inventors: Tom Baekelandt, Roland Groenen, Steven Van Der Linden, Peter Persoone
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Publication number: 20120070576Abstract: The invention relates to a coated porous medium comprising metal particles. The metal particles define a free area surface S. The free area surface S is substantially completely coated with a coating layer. The coating layer is substantially conformal, substantially uniform in composition and has substantially the same thickness over the whole free area surface. The invention further relates to the use of a coated medium as filter medium and to a method of manufacturing a coated medium.Type: ApplicationFiled: November 29, 2011Publication date: March 22, 2012Inventors: Roland Groenen, Kris Van Hege
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Publication number: 20110250426Abstract: The invention relates to cord (20) comprising a number of filaments twisted together. The peripheral surface of the cord (20) is at least partially coated with an adhesion promoting coating (24). The adhesion promoting coating (24) comprises at least a first layer comprising a silicon based coating, a titanium based coating, a zirconium based coating or a combination thereof. The invention further relates to a composite material comprising such a cord (20) embedded in a polymer material. Furthermore the invention relates to a method to manufacture such a cord (20).Type: ApplicationFiled: December 11, 2009Publication date: October 13, 2011Inventors: Tom Baekelandt, Roland Groenen, Kris Van Hege
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Patent number: 7933064Abstract: The invention relates to a reflector for an infrared radiating element. The reflector comprises a metal foil coated with—a first oxide layer deposited on the metal foil; —an infrared reflecting metal layer deposited on said first oxide layer; and—a second oxide layer deposited on said infrared reflecting layer. The first oxide layer is functioning as a diffusion barrier layer and is preventing the diffusion of the metal of the infrared reflecting layer in the substrate. The second oxide layer is functioning as a protective layer for the infrared reflecting layer giving the infrared reflecting layer the required thermal stability.Type: GrantFiled: May 8, 2006Date of Patent: April 26, 2011Assignee: NV Bekaert SAInventors: Roland Groenen, Hugo Lievens
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Publication number: 20100260994Abstract: The invention relates to a substrate being at least partially coated with a coating comprising at least a first layer and a second layer. The first layer and the second layer comprise amorphous hydrogenated carbon. The first layer has a first Eo4 optical band gap and the second layer has a second Eo4 optical band gap. The said second Eo4 optical band gap is smaller than said first Eo4 optical band gap. The invention further relates to a method to deposit such a coating on a substrate.Type: ApplicationFiled: December 16, 2008Publication date: October 14, 2010Inventors: Roland Groenen, Val Lieberman, Kris Van Hege
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Publication number: 20100119732Abstract: The invention relates to a hydrogenated amorphous carbon coating characterized by a substantial absence of spx hybridized CHx endgroups with x equal to 1, 2 and 3. The invention further relates to a method to deposit such a hydrogenated amorphous carbon coating on a substrate.Type: ApplicationFiled: February 5, 2008Publication date: May 13, 2010Inventors: M. Creatore, Roland Groenen, S. V. Singh, M.C.M. Van De Sanden, Kris Van Hege
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Publication number: 20090142599Abstract: The invention relates to a method to increase the wettability of a substrate by providing said substrate at least partially with a conductive, metal free, hydrophilic carbon based coating. The carbon based coating is doped with nitrogen and has an electrical resistivity lower than 108 ohm-cm. The invention further relates to a substrate coated at least partially with a conductive metal free, hydrophilic carbon based coating.Type: ApplicationFiled: May 31, 2007Publication date: June 4, 2009Inventors: Erik Dekempeneer, Matthew P. Kirk, Roland Groenen, Cyndi L. Ackerman, Chandra Venkatraman
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Publication number: 20080254312Abstract: The invention relates to a coated porous medium comprising metal particles. The metal particles define a free area surface S. The free area surface S is substantially completely coated with a coating layer. The coating layer is substantially conformal, substantially uniform in composition and has substantially the same thickness over the whole free area surface. The invention further relates to the use of a coated medium as filter medium and to a method of manufacturing a coated medium.Type: ApplicationFiled: September 18, 2006Publication date: October 16, 2008Inventors: Roland Groenen, Kris Van Hege
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Publication number: 20080212169Abstract: The invention relates to a reflector for an infrared radiating element. The reflector comprises a metal foil coated with—a first oxide layer deposited on the metal foil; —an infrared reflecting metal layer deposited on said first oxide layer; and—a second oxide layer deposited on said infrared reflecting layer. The first oxide layer is functioning as a diffusion barrier layer and is preventing the diffusion of the metal of the infrared reflecting layer in the substrate. The second oxide layer is functioning as a protective layer for the infrared reflecting layer giving the infrared reflecting layer the required thermal stability.Type: ApplicationFiled: May 8, 2006Publication date: September 4, 2008Inventors: Roland Groenen, Hugo Lievens