Patents by Inventor OLLI HOGNABBA
OLLI HOGNABBA 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: 10814282Abstract: A filter element for a filter apparatus includes at least one filter member and a frame member arranged to support the at least one filter member in such a manner that an internal cavity is formed. The filter member includes a permeable membrane layer which has a first filter surface for receiving a pressure and directed towards an internal cavity arranged in-side the filter element, and a second filter surface for receiving solid particles filtered from a feed. The filter member forms a capillary filter.Type: GrantFiled: November 3, 2015Date of Patent: October 27, 2020Assignee: OUTOTEC (FINLAND) OYInventors: Kari Vänttinen, Ismo Juvonen, Rolf Hindström, Bjarne Ekberg, Mika Illi, Edward Vroman, Laura Simola, Olli Högnabba
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Publication number: 20180326357Abstract: A filter element for a filter apparatus includes at least one filter member and a frame member arranged to support the at least one filter member in such a manner that an internal cavity is formed. The filter member includes a permeable membrane layer which has a first filter surface for receiving a pressure and directed towards an internal cavity arranged in-side the filter element, and a second filter surface for receiving solid particles filtered from a feed. The filter member forms a capillary filter.Type: ApplicationFiled: November 3, 2015Publication date: November 15, 2018Inventors: Kari VÄNTTINEN, Ismo JUVONEN, Rolf HINDSTRÖM, Bjarne EKBERG, Mika ILLI, Edward VROMAN, Laura SIMOLA, Olli HÖGNABBA
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Publication number: 20140346104Abstract: The invention relates to a ceramic filter element (22) for removal of liquid from solids containing material in a capillary suction dryer. The filter element comprises a ceramic substrate covered by a sintered ceramic microporous layer (31). The sintered microporous membrane layer is provided with coarse solid particles (71) of a particle size larger than a pore size of the membrane material layer (31) so as to form a textured surface (50) which prevents a filter cake from sliding off the surface of the filter element prior to the intended cake discharge.Type: ApplicationFiled: May 21, 2013Publication date: November 27, 2014Applicant: Outotec (Filters) OyInventors: Bjarne Ekberg, Olli Högnabba, Rolf Hindstöm, David Eveland, Edward Vroman
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Publication number: 20120152863Abstract: A liquid extraction filter, more particularly a continuous-action, top-feed, vacuum drum filter includes a drum structure and filter elements, the filtration surface of which filter elements is formed of microporous hydrophilic material such that when filtering with a partial vacuum it is impervious to the surrounding air.Type: ApplicationFiled: February 24, 2012Publication date: June 21, 2012Inventors: Bjarne EKBERG, Olli Högnabba, Jason Palmer
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Publication number: 20110031193Abstract: The object of the invention is a liquid extraction filter, more particularly a continuous-action, top-feed, vacuum drum filter. What is essential in the invention is that the filter comprises a drum structure (1) and filter elements (2), the filtration surface of which filter elements is formed of microporous hydrophilic material such that when filtering with a partial vacuum it is impervious to the surrounding air.Type: ApplicationFiled: April 2, 2009Publication date: February 10, 2011Applicant: OUTOTEC (FILTERS) OYInventors: Bjarne Ekberg, Olli Högnabba, Jason Palmer
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Publication number: 20050284805Abstract: The invention relates to a microporous filter plate to be used in a suction drier, particularly in a capillary filter, the filter plate of which contains a membrane with a mean pore size of about 1 micrometer, a substrate, whereon the membrane is positioned, and a recessed area in the interior of the filter plate with cavities for a filtrate and for a backwash liquid. According to the invention the recessed area in the interior of the filter plate is provided with supporting elements, in which the ratio between the longest dimension and the shortest dimension is in maximum 1.5 in the cross-section parallel to the filtration surface of the filter plate, for allowing liquid to flow essentially simultaneously and easily in all directions and for the structure of the filter plate being durable for stresses based on pressure peaks.Type: ApplicationFiled: September 4, 2003Publication date: December 29, 2005Inventors: Olli Hognabba, Bjarne Ekberg, Veikko Varjonen, Dave Eveland, Jeffrey Yost
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Patent number: 6843379Abstract: The invention relates to a filter element with improved corrosion and heat resistance and structural properties to be used in filtering solids containing material in order to achieve a filter cake of solid material on at least one external surface area of the filter element. According to the invention, at least one part of the external surface area of the filter element separated from the external surface area for forming the filter cake is provided with at least one corrosion and heat resistant polymer-based material.Type: GrantFiled: September 6, 2002Date of Patent: January 18, 2005Assignee: Outokumpu OyjInventors: Olli Högnabba, Gregg W. Grume
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Publication number: 20040104164Abstract: The invention relates to a filter element and its manufacture to be used in removal of liquid from solids containing material to be dried in a capillary suction dryer which filter element contains a ceramic microporous layer having the pore size under 5 micrometer and supported by a ceramic internal layer having recess areas for liquid flowing. The internal layer is made of at least one substrate which continuously surrounds at least one recess area and which ceramic internal layer is surrounded by at least one essentially continuous microporous surface layer.Type: ApplicationFiled: July 3, 2003Publication date: June 3, 2004Inventors: Kerry Johnson, Olli Hognabba, Bjarne Ekberg
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Publication number: 20040069702Abstract: The invention relates to a filter element for removing moisture contained in a material to be dried and for creating a filter cake of the material to be dried on the filtering surface of the filter element. According to the invention, the filtering surface (1. 6) the filter element (11) is composed of at least two parts (2,3;7,8) where mutually different filtering conditions can be created in order to form a filter cake containing at least one component to be filtered on the whole filtering surface (1,6) of the filter element (11).Type: ApplicationFiled: November 7, 2003Publication date: April 15, 2004Inventors: Bjarne Ekberg, Olli Hognabba
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Publication number: 20040069722Abstract: The invention relates to a filtration method where the material to be filtered is brought into contact with the filtering surface of a filtering medium arranged in a suction drier, and on the filtering surface for the filtering medium, there is formed a filter cake, and the filter cake is subjected to a drying process constituting at least one step prior to removing the filter cake from the filtering surface of the filtering medium. According to the invention, in the filter cake drying process there is performed at least one drying step (12,22,32,42) during which gas is prevented from flowing through the filtering medium, and at least one drying step (13,23,33,44) during which gas flows through the filtering medium.Type: ApplicationFiled: November 19, 2003Publication date: April 15, 2004Inventors: Bjarne Ekberg, Olli Hognabba
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Patent number: 6596168Abstract: The invention relates to a filter element and its manufacture to be used in removal of liquid from solids containing material to be dried in a capillary suction dryer which filter element contains a ceramic microporous layer having the pore size under 5 micrometer and supported by a ceramic internal layer having recess areas for liquid flowing. The internal layer is made of at least one substrate which continuously surrounds at least one recess area and which ceramic internal layer is surrounded by at least one essentially continuous microporous surface layer.Type: GrantFiled: January 16, 2001Date of Patent: July 22, 2003Assignee: Outokumpu OyjInventors: Kerry Johnson, Olli Högnabba, Bjarne Ekberg
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Publication number: 20030010709Abstract: The invention relates to a filter element with improved corrosion and heat resistance and structural properties to be used in filtering solids containing material in order to achieve a filter cake of solid material on at least one external surface area of the filter element. According to the invention, at least one part of the external surface area of the filter element separated from the external surface area for forming the filter cake is provided with at least one corrosion and heat resistant polymer-based material.Type: ApplicationFiled: September 6, 2002Publication date: January 16, 2003Inventors: Olli Hognabba, Gregg W. Grume
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Publication number: 20020092807Abstract: The invention relates to a filter element and its manufacture to be used in removal of liquid from solids containing material to be dried in a capillary suction dryer which filter element contains a ceramic microporous layer having the pore size under 5 micrometer and supported by a ceramic internal layer having recess areas for liquid flowing. The internal layer is made of at least one substrate which continuously surrounds at least one recess area and which ceramic internal layer is surrounded by at least one essentially continuous microporous surface layer.Type: ApplicationFiled: January 16, 2001Publication date: July 18, 2002Inventors: Kerry Johnson, Olli Hognabba, Bjarne Ekberg
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Publication number: 20010050250Abstract: The invention relates to a filter element with improved corrosion and heat resistance and structural properties to be used in filtering solids containing material in order to achieve a filter cake of solid material on at least one external surface area of the filter element. According to the invention, at least one part of the external surface area of the filter element separated from the external surface area for forming the filter cake is provided with at least one corrosion and heat resistant polymer-based material.Type: ApplicationFiled: September 14, 1999Publication date: December 13, 2001Inventors: OLLI HOGNABBA, GREGG W. GRUME