Patents by Inventor Frits Kornelis Feenstra
Frits Kornelis Feenstra 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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Patent number: 11014288Abstract: A production line for making tangible products by layerwise manufacturing. The production line comprises: (i) a first and a second building platform for carrying a tangible product; (ii) a deposition head for providing a layer of construction material onto the building platforms; (iii) a conveyor for conveying the building platforms in a conveying plane towards and away from the deposition head repeatedly; and (iv) height adjustment means to adjust the distance between the deposition head and the building platforms by displacing the building platforms relative to the conveyor in a direction perpendicular to the conveying plane. The production line may further comprise a picking unit for picking a product from the building platforms.Type: GrantFiled: February 13, 2019Date of Patent: May 25, 2021Inventors: René Jos Houben, Leonardus Antonius Maria Brouwers, Andries Rijfers, Frits Kornelis Feenstra
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Patent number: 10987868Abstract: A production line for making tangible products by layerwise manufacturing. The production line includes: first and second movable carriers, each carrier comprising a transporter for transporting the carrier, and a building platform for supporting a tangible product, one or more deposition heads for depositing construction material in a deposition direction onto the building platforms, and a conveyor for conveying the first and second building platform towards the deposition head and away from the deposition head repeatedly. The first and the second transporter are movable at variable speeds relative to each other along a trajectory of the conveyor. Optionally, the height of the building platforms can be adjusted.Type: GrantFiled: April 1, 2019Date of Patent: April 27, 2021Assignee: NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNOInventors: René Jos Houben, Andries Rijfers, Leonardus Antonius Maria Brouwers, Augustinus Gerardus Maria Biemans, Frits Kornelis Feenstra
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Publication number: 20190322052Abstract: The invention relates to a production line for making tangible products by layerwise manufacturing. The production line includes: first and second carriers comprising first and second building platforms for supporting first and second tangible products, a deposition head for depositing construction material onto the building platforms, a material remover for removing a surplus of the deposited construction material from the building platforms, a solidification device for solidifying at least a part of the deposited construction material, and a platform conveyor for conveying the carriers towards and away from the deposition head repeatedly. The layers are deposited on top of each other and solidified in a pattern that corresponds to a cross section of the product. The surplus material is removed by a remover, preferably before the layer is solidified. This allows the quantity of material to be adapted to the specific product on each building platform.Type: ApplicationFiled: April 1, 2019Publication date: October 24, 2019Inventors: René Jos Houben, Andries Rijfers, Leonardus Antonius Maria Brouwers, Augustinus Gerardus Maria Biemans, Frits Kornelis Feenstra
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Patent number: 10421265Abstract: The invention relates to a production line and a method for making tangible products by layerwise manufacturing. The production line comprises a deposition head for depositing construction material layerwise on a building platform. The building platforms can move with a different speed along a conveyor. Optionally, the height of the building platforms can be adjusted. The method is characterized in that at least two building platforms are moving with different speed.Type: GrantFiled: April 23, 2015Date of Patent: September 24, 2019Assignee: NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNOInventors: René Jos Houben, Leonardus Antonius Maria Brouwers, Augustinus Gerardus Maria Biemans, Andries Rijfers, Frits Kornelis Feenstra
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Publication number: 20190224919Abstract: A production line for making tangible products by layerwise manufacturing. The production line includes: first and second movable carriers, each carrier comprising a transporter for transporting the carrier, and a building platform for supporting a tangible product, one or more deposition heads for depositing construction material in a deposition direction onto the building platforms, and a conveyor for conveying the first and second building platform towards the deposition head and away from the deposition head repeatedly. The first and the second transporter are movable at variable speeds relative to each other along a trajectory of the conveyor. Optionally, the height of the building platforms can be adjusted.Type: ApplicationFiled: April 1, 2019Publication date: July 25, 2019Inventors: René Jos Houben, Andries Rijfers, Leonardus Antonius Maria Brouwers, Augustinus Gerardus Maria Biemans, Frits Kornelis Feenstra
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Publication number: 20190210280Abstract: A production line for making tangible products by layerwise manufacturing. The production line comprises: (i) a first and a second building platform for carrying a tangible product; (ii) a deposition head for providing a layer of construction material onto the building platforms; (iii) a conveyor for conveying the building platforms in a conveying plane towards and away from the deposition head repeatedly; and (iv) height adjustment means to adjust the distance between the deposition head and the building platforms by displacing the building platforms relative to the conveyor in a direction perpendicular to the conveying plane. The production line may further comprise a picking unit for picking a product from the building platforms.Type: ApplicationFiled: February 13, 2019Publication date: July 11, 2019Inventors: René Jos Houben, Leonardus Antonius Maria Brouwers, Andries Rijfers, Frits Kornelis Feenstra
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Patent number: 10226894Abstract: The invention relates to a method and a production line for making tangible products by layerwise manufacturing. The production line comprises (i) a first and a second building platform (102, 112) for carrying a tangible product, (ii) a deposition head (101) for providing a layer of construction material onto the building platforms, (iii) a conveyor (103) for conveying the building platforms in a conveying plane towards and away from the deposition head repeatedly, (iv) height adjustment means (107) to adjust the distance between the deposition head and the building platforms by displacing the building platforms relative to the conveyor in a direction (104) perpendicular to the conveying plane. The production line may further comprise a picking unit (106) for picking a product from the building platforms. The method allows making different tangible products in a continuous process by layerwise manufacturing.Type: GrantFiled: October 30, 2013Date of Patent: March 12, 2019Assignee: NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNOInventors: René Jos Houben, Leonardus Antonius Maria Brouwers, Andries Rijfers, Frits Kornelis Feenstra
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Publication number: 20170050379Abstract: The invention relates to a production line and a method for making tangible products by layerwise manufacturing. The production line comprises a deposition head for depositing construction material layerwise on a building platform. The building platforms can move with a different speed along a conveyor. Optionally, the height of the building platforms can be adjusted. The method is characterised in that at least two building platforms are moving with different speed.Type: ApplicationFiled: April 23, 2015Publication date: February 23, 2017Inventors: René Jos Houben, Leonardus Antonius Maria Brouwers, Augustinus Gerardus Maria Biemans, Andries Rijfers, Frits Kornelis Feenstra
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Publication number: 20150290878Abstract: The invention relates to a method and a production line for making tangible products by layerwise manufacturing. The production line comprises (i) a first and a second building platform (102, 112) for carrying a tangible product, (ii) a deposition head (101) for providing a layer of construction material onto the building platforms, (iii) a conveyor (103) for conveying the building platforms in a conveying plane towards and away from the deposition head repeatedly, (iv) height adjustment means (107) to adjust the distance between the deposition head and the building platforms by displacing the building platforms relative to the conveyor in a direction (104) perpendicular to the conveying plane. The production line may further comprise a picking unit (106) for picking a product from the building platforms. The method allows making different tangible products in a continuous process by layerwise manufacturing.Type: ApplicationFiled: October 30, 2013Publication date: October 15, 2015Inventors: René Jos Houben, Leonardus Antonius Maria Brouwers, Andries Rijfers, Frits Kornelis Feenstra
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Patent number: 8296942Abstract: The invention provides a process for preparing a heatsink system for a heat generating electronic device, comprising the steps of: (a) providing a heat conducting substrate; (b) applying an insulating layer on the heat conducting substrate; and (c) applying a printed circuit on the isolating layer by means of a hot embossing system. The invention further provides a heatsink system obtainable by said process, comprising a heat conducting substrate, an insulating layer that is applied on the heat conducting substrate, and a printed circuit that is applied on the insulating layer, wherein the thickness of the part of the insulating layer which is arranged between the heat conducting substrate and the printed circuit is between 1 and 100 micron.Type: GrantFiled: May 10, 2007Date of Patent: October 30, 2012Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek TNOInventors: Frits Kornelis Feenstra, Jürgen Hackert
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Publication number: 20090242239Abstract: The invention provides a process for preparing a heatsink system for a heat generating electronic device, comprising the steps of: (a) providing a heat conducting substrate; (b) applying an insulating layer on the heat conducting substrate; and (c) applying a printed circuit on the isolating layer by means of a hot embossing system. The invention further provides a heatsink system obtainable by said process, comprising a heat conducting substrate, an insulating layer that is applied on the heat conducting substrate, and a printed circuit that is applied on the insulating layer, wherein the thickness of the part of the insulating layer which is arranged between the heat conducting substrate and the printed circuit is between 1 and 100 micron.Type: ApplicationFiled: May 10, 2007Publication date: October 1, 2009Applicant: Schoemakerstraat 97Inventors: Frits Kornelis Feenstra, Juergen Hackert
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Publication number: 20080211132Abstract: The invention provides an apparatus for building a three-dimensional article in sequential cross-sectional layers, which apparatus comprises: a powder delivery system comprising one or more reservoirs for delivering a powder and a powder spreading system; a printing system for delivering a liquid; a build chamber comprising a outer wall, an inner wall and a build platform which is movable along the inner wall of the build chamber; and a powder recovery system; wherein more than 25% of the outer wall of the build chamber is in communication with the powder recovery system and/or the build platform is capable of releasing unused powder (directly) from the build chamber in a downward direction into the powder recovery system. The invention further provides a method building a three-dimensional article wherein use is made of said apparatus.Type: ApplicationFiled: September 4, 2006Publication date: September 4, 2008Inventor: Frits Kornelis Feenstra
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Patent number: 6955776Abstract: The present invention relates to a method for fabricating a functional dental element, such as a crown. According to the invention, use is made of a three-dimensional printing technique. The major advantages of the invention are that no mold is needed anymore, which entails a considerable saving of costs, that a great accuracy is achieved, and that the element can be made of different materials.Type: GrantFiled: August 24, 2000Date of Patent: October 18, 2005Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNOInventor: Frits Kornelis Feenstra
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Patent number: 6921500Abstract: The present invention relates to a method for fabricating a functional dental element, such as a crown. According to the invention, use is made of a three-dimensional printing technique. The major advantages of the invention are that no mold is needed anymore, which entails a considerable saving of costs, that a great accuracy is achieved, and that the element can be made of different materials.Type: GrantFiled: August 24, 2000Date of Patent: July 26, 2005Assignee: Nederlandse Organisatie voor toegepast-natuurwetenschappelijk Onderzoek TNOInventor: Frits Kornelis Feenstra
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Patent number: 5707584Abstract: In order to produce ceramic hollow fibers, in particular hollow fiber membranes for microfiltration, ultrafiltration and gas separation, a paste is made filling a polymer binder system with a ceramic powder. The paste is processed by extruding through a spinneret to give hollow fibers. The binder system is removed with the aid of thermal diffusion and the powder particles are sintered to each other.Type: GrantFiled: November 29, 1995Date of Patent: January 13, 1998Assignee: Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek TnoInventors: Rinse Alle Terpstra, Joost Petrus Gerardus Maria Van Eijk, Frits Kornelis Feenstra