Patents by Inventor Yit-Hong Tee
Yit-Hong Tee 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: 11819793Abstract: A filter includes a pleated filter element having a fibrous support layer and a filtration layer bonded to the fibrous support layer. The fibrous support layer and the filtration layer are both in pleated form to provide a plurality of pleats. A cured stiffening agent is applied to the fibrous support layer, and the pleated form is maintained. The fibrous support layer is bonded to the filtration layer by other than the cured stiffening agent.Type: GrantFiled: August 18, 2020Date of Patent: November 21, 2023Assignee: Parker-Hannifin CorporationInventor: Yit-Hong Tee
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Publication number: 20220219105Abstract: A nanofiber based multi-layer filtration material suitable for use in providing air filtration to a user's respiratory system may be provided. as an air filtration garment and/or other air filterina devices such as a face mask, mask and garments or the like. The laminate includes a one or more fabric layer adjacent to one or more nanofiber layers.Type: ApplicationFiled: July 19, 2021Publication date: July 14, 2022Applicant: L&C Protec, Inc. d/b/a Cocoon, Inc.Inventors: John Peter Lord, Crotty Leo, Vishal Bansal, Christopher Ferraro, Yit-Hong Tee
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Patent number: 11090589Abstract: An improved stretchable filtration fabric laminate is provided. The laminate includes a first fabric layer and a nanofiber layer. The laminate may be stretched without damaging the laminate. The laminate is thus suitable for incorporation into wearable protective garments, such as protective hoods, balaclavas, scarves, etc. that provide both protection and air filtration to the wearer.Type: GrantFiled: February 17, 2017Date of Patent: August 17, 2021Inventors: Vishal Bansal, Leo J. Crotty, Jr., Christopher D. Ferraro, Yit-Hong Tee
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Publication number: 20210069628Abstract: A filter includes a pleated filter element having a fibrous support layer and a filtration layer bonded to the fibrous support layer. The fibrous support layer and the filtration layer are both in pleated form to provide a plurality of pleats. A cured stiffening agent is applied to the fibrous support layer, and the pleated form is maintained. The fibrous support layer is bonded to the filtration layer by other than the cured stiffening agent.Type: ApplicationFiled: August 18, 2020Publication date: March 11, 2021Applicant: BHA Altair, LLCInventor: Yit-Hong Tee
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Publication number: 20170239601Abstract: An improved stretchable filtration fabric laminate is provided. The laminate includes a first fabric layer and a nanofiber layer. The laminate may be stretched without damaging the laminate. The laminate is thus suitable for incorporation into wearable protective garments, such as protective hoods, balaclavas, scarves, etc. that provide both protection and air filtration to the wearer.Type: ApplicationFiled: February 17, 2017Publication date: August 24, 2017Inventors: Vishal Bansal, Leo J. Crotty, JR., Christopher D. Ferraro, Yit-Hong Tee
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Publication number: 20130319924Abstract: A membrane distillation system is provided for distilling liquids. The membrane distillation system includes a heat generating means for heating a non-distilled liquid. The membrane distillation system further includes a microporous membrane that is asymmetric and vapor permeable. The microporous membrane includes a hydrophilic layer and a hydrophobic layer. The membrane distillation system further includes a supply means for delivering the heated non-distilled liquid to the hydrophilic layer of the microporous membrane. A collection means is further provided for collecting distilled liquid from the hydrophobic layer of the microporous membrane. A method of fabricating the microporous membrane for use in the membrane distillation system is also provided.Type: ApplicationFiled: June 5, 2012Publication date: December 5, 2013Applicant: General Electric CompanyInventors: Yit-Hong Tee, Vishal Bansal, Christopher Keller
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Patent number: 8334227Abstract: A waterproof, vapor-permeable and air-permeable sheet material. The sheet material includes a waterproof microporous polymer substrate and a microporous thermoplastic coating layer attached to the polymer substrate. The thermoplastic coating layer is vapor-permeable and air-permeable. The thermoplastic coating layer is at least partially interpenetrated into pores of the polymer substrate forming an interface that prevents passage of water droplets, while permitting passage of water vapor and air, when a chemical is present on the sheet material that would otherwise cause the polymer substrate to permit passage of water droplets. The interface is resistant to chemical interference with at least the waterproof property of the sheet material.Type: GrantFiled: April 2, 2009Date of Patent: December 18, 2012Assignee: BHA Group, Inc.Inventors: Yit-Hong Tee, Taher Abujoudeh
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Patent number: 8147936Abstract: A system, in certain embodiments, includes a protective membrane having first and second layers. The first layer is air permeable, vapor breathable, and liquid repellant. The second layer is vapor breathable, liquid repellant, and adsorptive of chemical and/or biological agents.Type: GrantFiled: June 10, 2009Date of Patent: April 3, 2012Assignee: General Electric CompanyInventors: Vishal Bansal, Yit-Hong Tee, Reena Srivastava
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Patent number: 8048516Abstract: A waterproof, vapor-permeable and gas-permeable sheet material and a method of making are provided. The sheet material includes a waterproof microporous layer and a thermoplastic layer attached to the microporous layer. The thermoplastic layer is vapor-permeable and air-permeable. The microporous layer is at least partially integrated with the thermoplastic layer to form a zone that prevents passage of water droplets, while permitting passage of water vapor and air, when a chemical is present on the sheet material that would otherwise cause the microporous layer to permit passage of water droplets. The Zone can be considered to be resistant to chemical interference with at least the waterproof property of the microporous layer and inhibits detachment of the layers.Type: GrantFiled: November 21, 2008Date of Patent: November 1, 2011Assignee: BHA Group, Inc.Inventors: Yit-Hong Tee, Taher Abujoudeh, Cynthia Polizzi
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Publication number: 20110097571Abstract: A porous composite membrane is provided by an associated method and includes a first microporous substrate of a first material. A second, coating material is joined to the first microporous substrate to form a bi-component arrangement with the first microporous substrate. The second material is different than the first material. A third, coating material is applied to the bi-component arrangement. The third material is different than the first and second materials. The third material extending over at least a portion of surfaces of the bi-component arrangement which define the micropores.Type: ApplicationFiled: October 22, 2009Publication date: April 28, 2011Applicant: BHA Group, INC.Inventors: Yit-Hong Tee, Taher Abujoudeh, Martin Hatfield
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Publication number: 20100316819Abstract: A system, in certain embodiments, includes a protective membrane having first and second layers. The first layer is air permeable, vapor breathable, and liquid repellant. The second layer is vapor breathable, liquid repellant, and adsorptive of chemical and/or biological agents.Type: ApplicationFiled: June 10, 2009Publication date: December 16, 2010Applicant: GENERAL ELECTRIC COMPANY, A NEW YORK CORPORATIONInventors: Vishal Bansal, Yit-Hong Tee, Reena Srivastava
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Publication number: 20100255741Abstract: A waterproof, vapor-permeable and air-permeable sheet material. The sheet material includes a waterproof microporous polymer substrate and a microporous thermoplastic coating layer attached to the polymer substrate. The thermoplastic coating layer is vapor-permeable and air-permeable. The thermoplastic coating layer is at least partially interpenetrated into pores of the polymer substrate forming an interface that prevents passage of water droplets, while permitting passage of water vapor and air, when a chemical is present on the sheet material that would otherwise cause the polymer substrate to permit passage of water droplets. The interface is resistant to chemical interference with at least the waterproof property of the sheet material.Type: ApplicationFiled: April 2, 2009Publication date: October 7, 2010Applicant: BHA Group, Inc.Inventors: Yit-Hong Tee, Taher Abujoudeh
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Publication number: 20100129629Abstract: A waterproof, vapor-permeable and gas-permeable sheet material and a method of making are provided. The sheet material includes a waterproof microporous layer and a thermoplastic layer attached to the microporous layer. The thermoplastic layer is vapor-permeable and air-permeable. The microporous layer is at least partially integrated with the thermoplastic layer to form a zone that prevents passage of water droplets, while permitting passage of water vapor and air, when a chemical is present on the sheet material that would otherwise cause the microporous layer to permit passage of water droplets. The Zone can be considered to be resistant to chemical interference with at least the waterproof property of the microporous layer and inhibits detachment of the layers.Type: ApplicationFiled: November 21, 2008Publication date: May 27, 2010Applicant: BHA GROUP, INC.Inventors: Yit-Hong Tee, Taher Abujoudeh, Cynthia Polizzi