Patents by Inventor Keh Dema
Keh 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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Publication number: 20240035214Abstract: An AM/AV fabric, comprising base fibers comprising a base polymer composition comprising a base polymer; and short AM/AV fibers comprising an AM/AV polymer composition comprising an AM/AV polymer and an AM/AV compound. The fabric has a charge and demonstrates a particle efficiency greater than 20% when measured in accordance with TSI 8130A test system at 10.5 ft/min face velocity, and a Klebsiella pneumoniae efficacy log reduction greater than 1.5, as measured in accordance with ASTM E3160 (2018).Type: ApplicationFiled: July 26, 2023Publication date: February 1, 2024Applicant: Ascend Performance Materials Operations LLCInventors: Keh Dema, Kevin Urman, Albert Ortega
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Publication number: 20230158430Abstract: The present invention is generally related to a high capacity, high efficiency nonwoven filtration media comprising a gradient pore structure. In particular, the filtration media can comprise thermoplastic synthetic microfibers, fibrillated fibers, staple fibers, and a binder. Furthermore, the filtration media may be produced without the use of glass fibers or microglass fibers. Consequently, the filtration media of the present invention does not cause the same issues as conventional filtration media that comprises glass fibers and/or microglass fibers. Moreover, the filtration media can be used to treat fuel, lubrication fluids, hydraulic fluids, and various other industrial gases.Type: ApplicationFiled: January 9, 2023Publication date: May 25, 2023Applicant: Knowlton Technologies, LLCInventors: Richard Frank Barlow, Jr., Keh Dema
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Patent number: 11547963Abstract: The present invention is generally related to a high capacity, high efficiency nonwoven filtration media comprising a gradient pore structure. In particular, the filtration media can comprise thermoplastic synthetic microfibers, fibrillated fibers, staple fibers, and a binder. Furthermore, the filtration media may be produced without the use of glass fibers or microglass fibers. Consequently, the filtration media of the present invention does not cause the same issues as conventional filtration media that comprises glass fibers and/or microglass fibers. Moreover, the filtration media can be used to treat fuel, lubrication fluids, hydraulic fluids, and various other industrial gases.Type: GrantFiled: March 27, 2018Date of Patent: January 10, 2023Assignee: Knowlton Technologies, LLCInventors: Richard Frank Barlow, Jr., Keh Dema
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Patent number: 10981096Abstract: The present invention is generally related to a high capacity, high efficiency nonwoven filtration media comprising a gradient pore structure. In particular, the filtration media can comprise thermoplastic synthetic microfibers, fibrillated fibers, staple fibers, and a binder. Furthermore, the filtration media may be produced without the use of glass fibers or microglass fibers. A process for making the filtration media is also provided. Consequently, the filtration media of the present invention does not cause the same issues as conventional filtration media that comprises glass fibers and/or microglass fibers. Moreover, the filtration media can be used to treat fuel, lubrication fluids, hydraulic fluids, and various other industrial gases.Type: GrantFiled: March 27, 2018Date of Patent: April 20, 2021Assignee: Knowlton Technologies, LLCInventors: Richard Frank Barlow, Jr., Keh Dema
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Patent number: 10913022Abstract: The present invention is generally related to a high capacity, high efficiency nonwoven filtration media comprising a gradient pore structure. In particular, the filtration media can comprise thermoplastic synthetic microfibers, fibrillated fibers, staple fibers, and a binder. Furthermore, the filtration media may be produced without the use of glass fibers or microglass fibers. A process for making the filtration media is also provided. Consequently, the filtration media of the present invention does not cause the same issues as conventional filtration media that comprises glass fibers and/or microglass fibers. Moreover, the filtration media can be used to treat fuel, lubrication fluids, hydraulic fluids, and various other industrial gases.Type: GrantFiled: March 27, 2018Date of Patent: February 9, 2021Assignee: Knowlton Technologies, LLCInventors: Richard Frank Barlow, Jr., Keh Dema
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Publication number: 20180280845Abstract: The present invention is generally related to a high capacity, high efficiency nonwoven filtration media comprising a gradient pore structure. In particular, the filtration media can comprise thermoplastic synthetic microfibers, fibrillated fibers, staple fibers, and a binder. Furthermore, the filtration media may be produced without the use of glass fibers or microglass fibers. Consequently, the filtration media of the present invention does not cause the same issues as conventional filtration media that comprises glass fibers and/or microglass fibers. Moreover, the filtration media can be used to treat fuel, lubrication fluids, hydraulic fluids, and various other industrial gases.Type: ApplicationFiled: March 27, 2018Publication date: October 4, 2018Applicant: Knowlton Technologies, LLCInventors: Richard Frank Barlow, JR., Keh Dema
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Publication number: 20180280847Abstract: The present invention is generally related to a high capacity, high efficiency nonwoven filtration media comprising a gradient pore structure. In particular, the filtration media can comprise thermoplastic synthetic microfibers, fibrillated fibers, staple fibers, and a binder. Furthermore, the filtration media may be produced without the use of glass fibers or microglass fibers. A process for making the filtration media is also provided. Consequently, the filtration media of the present invention does not cause the same issues as conventional filtration media that comprises glass fibers and/or microglass fibers. Moreover, the filtration media can be used to treat fuel, lubrication fluids, hydraulic fluids, and various other industrial gases.Type: ApplicationFiled: March 27, 2018Publication date: October 4, 2018Applicant: Knowlton Technologies, LLCInventors: Richard Frank Barlow, JR., Keh Dema
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Publication number: 20180280846Abstract: The present invention is generally related to a high capacity, high efficiency nonwoven filtration media comprising a gradient pore structure. In particular, the filtration media can comprise thermoplastic synthetic microfibers, fibrillated fibers, staple fibers, and a binder. Furthermore, the filtration media may be produced without the use of glass fibers or microglass fibers. A process for making the filtration media is also provided. Consequently, the filtration media of the present invention does not cause the same issues as conventional filtration media that comprises glass fibers and/or microglass fibers. Moreover, the filtration media can be used to treat fuel, lubrication fluids, hydraulic fluids, and various other industrial gases.Type: ApplicationFiled: March 27, 2018Publication date: October 4, 2018Applicant: Knowlton Technologies, LLCInventors: Richard Frank Barlow, JR., Keh Dema
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Patent number: 9617685Abstract: A process of making a paper or nonwoven article is provide. The process comprising: a) providing a fiber furnish comprising a plurality of fibers and a plurality of binder microfibers, wherein the binder microfibers comprise a water non-dispersible, synthetic polymer; wherein the binder microfibers have a length of less than 25 millimeters and a fineness of less than 0.5 d/f; and wherein the binder microfibers have a melting temperature that is less than the melting temperature of the fibers; b) routing the fiber furnish to a wet-laid nonwoven process to produce at least one wet-laid nonwoven web layer; c) removing water from the wet-laid nonwoven web layer; and d) thermally bonding the wet-laid nonwoven web layer after step (c); wherein the thermal bonding is conducted at a temperature such that the surfaces of the binder microfibers at least partially melt without causing the fibers to melt thereby bonding the binder microfibers to the fibers to produce the paper or nonwoven article.Type: GrantFiled: April 10, 2014Date of Patent: April 11, 2017Assignee: Eastman Chemical CompanyInventors: Mark Dwight Clark, Keh Dema, Sungkyun Sohn, Ernest Phillip Smith, Chris Delbert Anderson, Charles Stuart Everett
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Patent number: 9303357Abstract: A paper or nonwoven article is provided comprising a nonwoven web layer, wherein the nonwoven web layer comprises a plurality of fibers and a plurality of binder microfibers, wherein the binder microfibers comprise a water non-dispersible, synthetic polymer; wherein the binder microfibers have a length of less than 25 millimeters and a fineness of less than 0.5 d/f; and wherein the binder microfibers have a melting temperature that is less than the melting temperature of the fibers.Type: GrantFiled: April 10, 2014Date of Patent: April 5, 2016Assignee: Eastman Chemical CompanyInventors: Mark Dwight Clark, Keh Dema, Sungkyun Sohn, Ernest Phillip Smith, Chris Delbert Anderson, Charles Stuart Everett
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Publication number: 20140311694Abstract: A paper or nonwoven article is provided comprising a nonwoven web layer, wherein the nonwoven web layer comprises a plurality of fibers and a plurality of binder microfibers, wherein the binder microfibers comprise a water non-dispersible, synthetic polymer; wherein the binder microfibers have a length of less than 25 millimeters and a fineness of less than 0.5 d/f; and wherein the binder microfibers have a melting temperature that is less than the melting temperature of the fibers.Type: ApplicationFiled: April 10, 2014Publication date: October 23, 2014Applicant: Eastman Chemical CompanyInventors: Mark Dwight Clark, Keh Dema, Sungkyun Sohn, Ernest Phillip Smith, Chris Delbert Anderson, Charles Stuart Everett
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Publication number: 20140311695Abstract: A process of making a paper or nonwoven article is provide. The process comprising: a) providing a fiber furnish comprising a plurality of fibers and a plurality of binder microfibers, wherein the binder microfibers comprise a water non-dispersible, synthetic polymer; wherein the binder microfibers have a length of less than 25 millimeters and a fineness of less than 0.5 d/f; and wherein the binder microfibers have a melting temperature that is less than the melting temperature of the fibers; b) routing the fiber furnish to a wet-laid nonwoven process to produce at least one wet-laid nonwoven web layer; c) removing water from the wet-laid nonwoven web layer; and d) thermally bonding the wet-laid nonwoven web layer after step (c); wherein the thermal bonding is conducted at a temperature such that the surfaces of the binder microfibers at least partially melt without causing the fibers to melt thereby bonding the binder microfibers to the fibers to produce the paper or nonwoven article.Type: ApplicationFiled: April 10, 2014Publication date: October 23, 2014Applicant: EASTMAN CHEMICAL COMPANYInventors: Mark Dwight Clark, Keh Dema, Sungkyun Sohn, Ernest Phillip Smith, Chris Delbert Anderson, Charles Stuart Everett
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Publication number: 20120210689Abstract: 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: ApplicationFiled: May 1, 2012Publication date: August 23, 2012Applicant: DONALDSON COMPANY, INC.Inventors: Robert Rogers, Brad Kahlbaugh, Paul Kojetin, Keh Dema
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Patent number: 8177875Abstract: 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: January 31, 2006Date of Patent: May 15, 2012Assignee: Donaldson Company, Inc.Inventors: Robert Rogers, Brad Kahlbaugh, Paul Kojetin, Keh Dema
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Publication number: 20080245037Abstract: 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: ApplicationFiled: January 31, 2006Publication date: October 9, 2008Inventors: Robert Rogers, Brad Kahlbaugh, Paul Kojetin, Keh Dema
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Publication number: 20080073296Abstract: 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: ApplicationFiled: November 20, 2007Publication date: March 27, 2008Applicant: Donaldson Company Inc.Inventors: Keh Dema, Linda Olson
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Publication number: 20070039300Abstract: 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: ApplicationFiled: November 1, 2006Publication date: February 22, 2007Applicant: Donaldson Company, Inc.Inventors: Brad Kahlbaugh, Keh Dema, Linda Olson
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Publication number: 20060096263Abstract: 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: ApplicationFiled: November 4, 2005Publication date: May 11, 2006Inventors: Brad Kahlbaugh, Keh Dema, Linda Olson
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Publication number: 20060096932Abstract: 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: ApplicationFiled: November 5, 2004Publication date: May 11, 2006Inventors: Keh Dema, Linda Olson