Patents Assigned to Neenah Gessner GmbH
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Patent number: 12274963Abstract: A filter medium for engine air filters contains a support layer and a meltblown layer containing polyester fibres. The filter medium is electrically charged.Type: GrantFiled: January 10, 2020Date of Patent: April 15, 2025Assignee: NEENAH GESSNER GMBHInventors: Georg Geisberger, Andreas Demmel
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Publication number: 20230191294Abstract: A multi-layered filter medium with a densified layer made of synthetic fibers is useful for filtering liquids. A method for its production involves providing multiple layers, densifying a layer, and joining the multiple layers.Type: ApplicationFiled: March 16, 2021Publication date: June 22, 2023Applicant: NEENAH GESSNER GmbHInventors: Fabian NUTZ, Andreas Demmel
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Publication number: 20220096980Abstract: A filter medium for engine air filters contains a support layer and a meltblown layer containing polyester fibres. The filter medium is electrically charged.Type: ApplicationFiled: January 10, 2020Publication date: March 31, 2022Applicant: NEENAH GESSNER GMBHInventors: Georg GEISBERGER, Andreas Demmel
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Patent number: 11198079Abstract: The invention relates to a filter material comprising a carrier material that is impregnated on one side with a thermally pre-crosslinked binder system (VB) and on the other side with a thermally crosslinkable but un-crosslinked binder system (UB). The filter material is characterised by improved deformability and a very good level of heat sealability, particularly using ultrasound, and a low pressure differential particularly when filtering high-viscosity liquids.Type: GrantFiled: December 8, 2016Date of Patent: December 14, 2021Assignee: NEENAH GESSNER GmbHInventors: Werner Hörl, Christoph Häringer, Andreas Demmel
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Publication number: 20210070976Abstract: The present invention relates to a resin binder composition, a filter medium comprising the resin binder composition as well as related methods and uses.Type: ApplicationFiled: September 6, 2019Publication date: March 11, 2021Applicant: NEENAH GESSNER GMBHInventors: Urs Fabian Fritze, Werner Hörl, Andreas Demmel
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Patent number: 10293290Abstract: The invention relates to a filter material impregnated on one side with a binding agent that is in particular suited for gas filtration, wherein the filter material comprises a side that is not impregnated with a binding agent, which side contains a halogen-free and boron-free flame protection means. By means of the filter material according to the invention, a high separation rate and a high dust storage capacity are achieved, whereas the filter material is flame-retardant, and in the event of fire, does not release any toxic decomposition products. The invention further relates to a filter element comprising the filter material according to the invention.Type: GrantFiled: September 24, 2013Date of Patent: May 21, 2019Assignee: NEENAH GESSNER GMBHInventors: Andreas Demmel, Werner Hoerl
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Publication number: 20180369730Abstract: The invention relates to a filter material comprising a carrier material that is impregnated on one side with a thermally pre-crosslinked binder system (VB) and on the other side with a thermally crosslinkable but un-crosslinked binder system (UB). The filter material is characterised by improved deformability and a very good level of heat sealability, particularly using ultrasound, and a low pressure differential particularly when filtering high-viscosity liquids.Type: ApplicationFiled: December 8, 2016Publication date: December 27, 2018Applicant: NEENAH GESSNER GMBHInventors: Werner HÖRL, Christoph HÄRINGER, Andreas DEMMEL
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Patent number: 10124467Abstract: The invention relates to an abrasive support, to an abrasive article comprising such a support, to the method for producing the same, and to the use of the abrasive article. According to at least one embodiment, the abrasive support comprises an impregnated support material based on synthetic fibers. The impregnated support material has at least on one side having a surface roughness Rz of 100 ?m to 500 ?m, and having an Rmax of 250 ?m to 600 ?m. The support has an air permeability of at most 20 l/m2 s.Type: GrantFiled: November 18, 2014Date of Patent: November 13, 2018Assignee: NEENAH GESSNER GMBHInventors: Juergen Nientiedt, Christine Doege, Peter Karl
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Publication number: 20170028530Abstract: The invention relates to an abrasive support, to an abrasive article comprising such a support, to the method for producing the same, and to the use of the abrasive article. According to at least one embodiment, the abrasive support comprises an impregnated support material based on synthetic fibers. The impregnated support material has at least on one side having a surface roughness Rz of 100 ?m to 500 ?m, and having an Rmax of 250 ?m to 600 ?m. The support has an air permeability of at most 20 l/m2s.Type: ApplicationFiled: November 28, 2014Publication date: February 2, 2017Applicant: NEENAH GESSNER GMBHInventors: Juergen NIENTIEDT, Christine DOEGE, Peter KARL
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Publication number: 20150283487Abstract: The invention relates to a filter material in particular for filtering liquids. The filter material is impregnated with a binder on only one side such that the opposite side is free of the binder and the content of the dried binder is 0.5 to 50 wt. % of the total weight of the filter material. Using the filter material according to the invention, a high degree of separation is achieved while maintaining a long service life. The invention further relates to a filter element which comprises the filter material according to the invention. Further aspects of the invention relate to the use of the filter material according to the invention in order to filter liquids and to a method for separating two non-mixable liquids, said liquids being conducted through the filter material according to the invention.Type: ApplicationFiled: October 17, 2013Publication date: October 8, 2015Applicant: NEENAH GESSNER GMBHInventors: Andreas Demmel, Christof Keppler, Christoph Haeringer
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Publication number: 20150273372Abstract: The invention relates to a filter material impregnated on one side with a binding agent that is in particular suited for gas filtration, wherein the filter material comprises a side that is not impregnated with a binding agent, which side contains a halogen-free and boron-free flame protection means. By means of the filter material according to the invention, a high separation rate and a high dust storage capacity are achieved, whereas the filter material is flame-retardant, and in the event of fire, does not release any toxic decomposition products. The invention further relates to a filter element comprising the filter material according to the invention.Type: ApplicationFiled: September 24, 2013Publication date: October 1, 2015Applicant: NEENAH GESSNER GMBHInventors: Andreas Demmel, Werner Hoerl
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Publication number: 20140197095Abstract: The invention relates to a multi-layer cleanable filter material for gas and liquid filtration, said filter material comprising a filter layer and a substrate layer that follows the filter layer in the flow direction, wherein the filter layer is substantially dendrite-free and consists of a melt-blown fleece made of elastic polymer fibres that has a breaking elongation of at least 100%.Type: ApplicationFiled: February 9, 2012Publication date: July 17, 2014Applicant: NEENAH GESSNER GmbHInventors: Andreas Demmel, Ingrid Meyr, Bernd Klausnitzer
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Publication number: 20140157990Abstract: A filter medium with antimicrobial action, in particular for filtering air for the interior area of motor vehicles, consisting of at least one first filter layer where pollutants can be retained, and a second filter layer adjacent to the first filter layer is provided. The second filter layer is attached to the on-flow side of the first filter layer and contains antimicrobial agents.Type: ApplicationFiled: December 4, 2013Publication date: June 12, 2014Applicants: NEENAH GESSNER GMBH, MANN+HUMMEL GMBHInventors: Alexander Piry, Ralf Blum, Ellen Buchta
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Patent number: 8715820Abstract: Odor-absorbing sheet-like structure comprising vegetable and/or manmade fibers, in particular a sheet-like structure having an air permeability suitable for filters and vacuum cleaner bags, which sheet-like structure has zinc ricinoleate in an amount in the range of 0.1 to 20% by weight, based on the weight of the sheet-like structure, in finely divided solid form on at least a part of the free fiber surface, and method for its production by treatment of a sheet-like structure with a dispersion of fine zinc ricinoleate particles or by spraying on a mist of a melt or solution of zinc ricinoleate.Type: GrantFiled: January 28, 2008Date of Patent: May 6, 2014Assignee: Neenah Gessner GmbHInventors: Bernd Klausnitzer, Albrecht Klimmek, Ernst Raabe
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Publication number: 20110262743Abstract: The present invention relates to a paper for adhesive tapes having an impregnated paper support containing recycled cellulose fibers as well as to adhesive tapes comprising such a paper for adhesive tapes and an adhesive layer. The recycled cellulose fibers are only slightly ground and originate predominantly from the group of long-fibered softwood celluloses. If necessary, the adhesive tape paper is provided with a separating layer and a bonding agent layer.Type: ApplicationFiled: April 21, 2011Publication date: October 27, 2011Applicant: NEENAH GESSNER GMBHInventors: Michael RAIDT, Oliver NICKEL
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Patent number: 7507272Abstract: The present invention relates to a vacuum filter bag comprising a layer containing immobilized odor-retaining particles characterized in that the abrasion loss of said odor-retaining particles caused by an air flow of 90 cm/s through a 200 cm2 specimen of said layer for two hours, measured in accordance with DIN 44956 T2, is 0 to 10% by weight of the total odor-retaining particles present before starting the air flow. The vacuum filter bags of the invention have a high dust holding capacity and an excellent long lasting odor removing effect.Type: GrantFiled: January 27, 2005Date of Patent: March 24, 2009Assignee: Neenah Gessner GmbHInventors: Dietmar Emig, Albrecht Klimmek, Ernst Raabe
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Publication number: 20080226886Abstract: Odour-absorbing sheet-like structure comprising vegetable and/or manmade fibres, in particular a sheet-like structure having an air permeability suitable for filters and vacuum cleaner bags, which sheet-like structure has zinc ricinoleate in an amount in the range of 0.1 to 20% by weight, based on the weight of the sheet-like structure, in finely divided solid form on at least a part of the free fibre surface, and method for its production by treatment of a sheet-like structure with a dispersion of fine zinc ricinoleate particles or by spraying on a mist of a melt or solution of zinc ricinoleate.Type: ApplicationFiled: January 28, 2008Publication date: September 18, 2008Applicant: Neenah Gessner GmbHInventors: BERND KLAUSNITZER, Albrecht Klimmek, Ernst Raabe