Patents by Inventor Keh B. Dema
Keh B. Dema 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: 8512435Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.Type: GrantFiled: August 22, 2012Date of Patent: August 20, 2013Assignee: Donaldson Company, Inc.Inventors: Robert M. Rogers, Keh B. Dema
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Patent number: 8460424Abstract: Crankcase ventilation arrangements are shown. Preferred wet laid media materials, for use in such arrangements are described. Also described and shown are example crankcase ventilation components, parts for use with a preferred media described and characterized.Type: GrantFiled: May 1, 2012Date of Patent: June 11, 2013Assignee: Donaldson Company, Inc.Inventors: Robert M. Rogers, Brad E. Kahlbaugh, Paul L. Kojetin, Keh B. Dema
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Patent number: 8404014Abstract: An arrangement separating a hydrophobic liquid phase from gaseous stream, for crankcase ventilation arrangements as described. The arrangement includes a media stage including media formed from a vacuum forming process and including at least 50%, by weight, bi-component fiber therein. Useable media formulations and arrangements are described.Type: GrantFiled: February 21, 2006Date of Patent: March 26, 2013Assignee: Donaldson Company, Inc.Inventors: Joseph Israel, Eugene Dunn, Keh B. Dema, Robert M. Rogers, Lorraine Keating-Klika, Leanne Kojetin
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Publication number: 20130008846Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Applicant: DONALDSON COMPANY, INC.Inventors: Robert M. Rogers, Keh B. Dema
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Publication number: 20120312738Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.Type: ApplicationFiled: August 22, 2012Publication date: December 13, 2012Applicant: Donaldson Company, Inc.Inventors: Robert M. Rogers, Keh B. Dema
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Patent number: 8277529Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.Type: GrantFiled: August 31, 2011Date of Patent: October 2, 2012Assignee: Donaldson Company, Inc.Inventors: Robert M. Rogers, Keh B. Dema
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Patent number: 8268033Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.Type: GrantFiled: May 18, 2011Date of Patent: September 18, 2012Assignee: Donaldson Company, Inc.Inventors: Robert M. Rogers, Keh B. Dema
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Publication number: 20110309012Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.Type: ApplicationFiled: August 31, 2011Publication date: December 22, 2011Applicant: DONALDSON COMPANY, INC.Inventors: Robert M. Rogers, Keh B. Dema
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Patent number: 8057567Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.Type: GrantFiled: May 1, 2006Date of Patent: November 15, 2011Assignee: Donaldson Company, Inc.Inventors: David M. Webb, David E. Carlson, Robert M Rogers, Keh B. Dema
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Patent number: 8021457Abstract: In the filtration of fluid materials, the removal of particulate from the moving stream requires substantial pressure to maintain flow and substantial capacity for removing particulate. The filters of the invention are rugged, high wet strength materials having a basis weight, permeability and efficiency suitable to obtain substantial reduction in particulate loading from liquid streams without plugging or mechanical failure. In particular, the filters of the invention permit the removal of substantial proportions of particulate from non-aqueous streams including lubricant oils, hydraulic fluids and other contaminated streams.Type: GrantFiled: November 5, 2004Date of Patent: September 20, 2011Assignee: Donaldson Company, Inc.Inventors: Keh B. Dema, Linda M. Olson
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Publication number: 20110215046Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units, such as breather caps. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate and/or fluid mist load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.Type: ApplicationFiled: May 18, 2011Publication date: September 8, 2011Applicant: DONALDSON COMPANY, INC.Inventors: Robert M. Rogers, Keh B. Dema
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Publication number: 20110198280Abstract: A filter and filter media configured and arranged for placement in a fuel stream is disclosed. The filter and filter media allow for filtering of liquid fuels, such as diesel fuel. In certain embodiments the filter media includes a media fiber (such as glass) and a binder fiber (such as bicomponent) that combine to create a media structure having low solidity and relatively low compressibility, and which contain a pore structure that avoids premature fouling of the filter by fuel degradation products.Type: ApplicationFiled: February 14, 2011Publication date: August 18, 2011Applicant: DONALDSON COMPANY, INC.Inventors: Derek O. Jones, Keh B. Dema, Stephen M. Larsen, Mike J. Madsen, Andrew J. Dallas, Yehya A. Elsayed, Chuanfang Yang
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Patent number: 7985344Abstract: In the filtration of fluid materials, the removal of particulate from the moving stream requires substantial pressure to maintain flow and substantial capacity for removing particulate. The filters of the invention are rugged, high wet strength materials having a basis weight, permeability and efficiency suitable to obtain substantial reduction in particulate loading from liquid streams without plugging or mechanical failure. In particular, the filters of the invention permit the removal of substantial proportions of particulate from non-aqueous streams including lubricant oils, hydraulic fluids and other contaminated streams.Type: GrantFiled: November 20, 2007Date of Patent: July 26, 2011Assignee: Donaldson Company, Inc.Inventors: Keh B. Dema, Linda M. Olson
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Publication number: 20110154790Abstract: An arrangement separating a hydrophobic liquid phase from gaseous stream, for crankcase ventilation arrangements as described. The arrangement includes a media stage comprising media formed from a vacuum forming process and including at least 50%, by weight, bi-component fiber therein. Useable media formulations and arrangements are described. Also described are techniques for assembly and use.Type: ApplicationFiled: February 21, 2006Publication date: June 30, 2011Applicant: DONALDSON COMPANY, INC.Inventors: Joseph Israel, Eugene Dunn, Keh B. Dema, Paul Kojertin, Robert M. Rogers, Lorriane Keating-Klika
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Publication number: 20110115102Abstract: Techniques are described, for preparing media arrangements having resin provided from an aqueous based resin system therein. The media generally comprises fibers configured in a non-woven matrix. Preferred resin arrangements, and conditions for resin application, drying and cure are provided. Also described are media containing arrangements including media made according to the preferred descriptions.Type: ApplicationFiled: June 2, 2005Publication date: May 19, 2011Applicant: DONALDSON COMPANY, INC.Inventor: Keh B. Dema
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Publication number: 20110005394Abstract: An air filter having a low pressure drop and adsorbent capabilities when placed in a fluid stream is disclosed. The air filter contains activated carbon incorporated into a filter media that can be shaped into a fluted configuration. The fluted shape is maintained during operation of the air filter through the use of flow restrictors along the length of the flute. The fluted material can be rolled or stacked.Type: ApplicationFiled: July 13, 2008Publication date: January 13, 2011Inventors: Jon D. Joriman, Andrew J. Dallas, Jeremy Exley, Brian Babcock, Keh B. Dema
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Patent number: 7314497Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.Type: GrantFiled: November 4, 2005Date of Patent: January 1, 2008Assignee: Donaldson Company, Inc.Inventors: Brad E. Kahlbaugh, Keh B. Dema, Linda M. Olson
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Patent number: 7309372Abstract: Thermoplastic bicomponent binder fiber can be combined with other media, fibers and other filtration components to form a thermally bonded filtration media. The filtration media can be used in filter units. Such filter units can be placed in the stream of a mobile fluid and can remove a particulate load from the mobile stream. The unique combination of media fiber, bicomponent binder fiber and other filtration additives and components provide a filtration media having unique properties in filtration applications.Type: GrantFiled: November 1, 2006Date of Patent: December 18, 2007Assignee: Donaldson Company, Inc.Inventors: Brad E. Kahlbaugh, Keh B. Dema, Linda M. Olson
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Patent number: 5250094Abstract: A ceramic fiber filter media is provided which includes ceramic fiber material and an effective amount of fluid fiber material. Preferably the media also contains therein thermoconductive fiber component. Embodiments are illustrated wherein the ceramic fiber filter media is incorporated into a preferred filter element. Particulate trap systems corporating such filter elements therein are described.Type: GrantFiled: March 16, 1992Date of Patent: October 5, 1993Assignee: Donaldson Company, Inc.Inventors: H. Young Chung, Keh B. Dema, Marty A. Barris