Patents by Inventor Saksatha Ly
Saksatha Ly 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: 11931695Abstract: Described are methods of membrane distillation for processing organic liquids, hydrophobic distillation membranes useful for membrane distillation methods, and methods of preparing the hydrophobic distillation membranes.Type: GrantFiled: April 16, 2021Date of Patent: March 19, 2024Assignee: ENTEGRIS, INC.Inventors: Vinay Goel, Jad A. Jaber, Saksatha Ly
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Patent number: 11918990Abstract: Described are ion-exchange membranes that include a porous polymeric membrane and imidazole ion-exchange groups at surfaces of the membrane; ion-exchange membranes and filters that contain the ion-exchange membranes; and methods of using the ion-exchange membranes and filters for separating charged biological molecule from a liquid.Type: GrantFiled: June 17, 2021Date of Patent: March 5, 2024Assignee: ENTEGRIS, INC.Inventors: Maybelle Woo, Jad A. Jaber, Saksatha Ly, Jeffrey E. Townley, James Hamzik, Justin Brewster
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Publication number: 20230372879Abstract: The disclosure provides porous membranes capable of removing very small particulates from a liquid composition. In certain embodiments, the porous membranes comprise poly(tetrafluoroethylene), wherein the membrane is at least partially coated with a polymer prepared from the free radical reaction of ethylenically-unsaturated monomers, wherein the monomers are comprised of monomers having an amide moiety. In particular embodiments, the membranes are capable of removing, by filtration, microbial particles such as bacteria, thus rendering the resulting liquid composition essentially sterile.Type: ApplicationFiled: May 18, 2023Publication date: November 23, 2023Inventors: Ying Qi, James Hamzik, Lucas Benjamin Snyder, Saksatha Ly
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Publication number: 20230372880Abstract: Described are porous polymeric membrane composites that contain crosslinked fluorinated ionomer at a surface of a microporous membrane support, and related methods.Type: ApplicationFiled: May 19, 2023Publication date: November 23, 2023Inventors: Alketa Gjoka, Jad Ali Jaber, David Crespo, Saksatha Ly
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Patent number: 11731085Abstract: The present disclosure provides a porous polymeric membrane that is coated with a cross-linked polymerized monomer. The coating on the porous polymeric membrane has a charge when it is immersed in an organic liquid. The coated porous polymeric membrane, a filter utilizing the membrane, and a method for treating an organic liquid used for photoresist with the coated porous polymeric membrane to remove metal contaminants from the organic liquid are disclosed.Type: GrantFiled: November 9, 2021Date of Patent: August 22, 2023Assignee: ENTEGRIS, INC.Inventors: Jad Ali Jaber, Saksatha Ly, James Hamzik, Testu Kohyama
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Patent number: 11618016Abstract: A polysulfone membrane is modified so that monomers are wafted onto the surface of the membrane. The polysulfone membranes can be grafted by contacting the membrane with a grafting solution and exposing the membrane to electromagnetic radiation, typically within the ultraviolet portion of the spectrum. The monomers that are grafted are typically anionic or cationic. The grafted membranes can be used for filtering impurities, such as positively and negatively charged particles, from a liquid. Anionic membranes provide improved filtration of negatively charged impurities, while cationic membranes provide improved filtration of positively charged impurities.Type: GrantFiled: October 18, 2021Date of Patent: April 4, 2023Assignee: ENTEGRIS, INC.Inventors: Jad Ali Jaber, Alketa Gjoka, Saksatha Ly
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Patent number: 11413586Abstract: Described are filter membranes coated with a polyamide, filters and filter cartridges that include the filter membranes, and methods of using and making the filter membranes.Type: GrantFiled: April 11, 2019Date of Patent: August 16, 2022Assignee: ENTEGRIS, INC.Inventors: Jad Ali Jaber, Kwok-Shun Cheng, Saksatha Ly
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Publication number: 20220134287Abstract: The present disclosure provides a porous polymeric membrane that is coated with a cross-linked polymerized monomer. The coating on the porous polymeric membrane has a charge when it is immersed in an organic liquid. The coated porous polymeric membrane, a filter utilizing the membrane, and a method for treating an organic liquid used for photoresist with the coated porous polymeric membrane to remove metal contaminants from the organic liquid are disclosed.Type: ApplicationFiled: November 9, 2021Publication date: May 5, 2022Inventors: Jad Ali JABER, Saksatha LY, James HAMZIK, Testu KOHYAMA
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Patent number: 11285443Abstract: The present disclosure provides a porous polymeric membrane that is coated with a cross-linked polymerized monomer. The coating on the porous polymeric membrane has a charge when it is immersed in an organic liquid. The coated porous polymeric membrane, a filter utilizing the membrane, and a method for treating an organic liquid used for photoresist with the coated porous polymeric membrane to remove metal contaminants from the organic liquid are disclosed.Type: GrantFiled: May 26, 2017Date of Patent: March 29, 2022Assignee: ENTEGRIS, INC.Inventors: Jad Ali Jaber, Saksatha Ly, James Hamzik, Testu Kohyama
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Patent number: 11273436Abstract: A polysulfone membrane is modified so that monomers are grafted onto the surface of the membrane. The polysulfone membranes can be grafted by contacting the membrane with a grafting solution and exposing the membrane to electromagnetic radiation, typically within the ultraviolet portion of the spectrum. The monomers that are grafted are typically anionic or cationic. The grafted membranes can be used for filtering impurities, such as positively and negatively charged particles, from a liquid. Anionic membranes provide improved filtration of negatively charged impurities, while cationic membranes provide improved filtration of positively charged impurities.Type: GrantFiled: November 19, 2015Date of Patent: March 15, 2022Assignee: ENTEGRIS, INC.Inventors: Jad Ali Jaber, Alketa Gjoka, Saksatha Ly
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Publication number: 20220032282Abstract: A polysulfone membrane is modified so that monomers are wafted onto the surface of the membrane. The polysulfone membranes can be grafted by contacting the membrane with a grafting solution and exposing the membrane to electromagnetic radiation, typically within the ultraviolet portion of the spectrum. The monomers that are grafted are typically anionic or cationic. The grafted membranes can be used for filtering impurities, such as positively and negatively charged particles, from a liquid. Anionic membranes provide improved filtration of negatively charged impurities, while cationic membranes provide improved filtration of positively charged impurities.Type: ApplicationFiled: October 18, 2021Publication date: February 3, 2022Inventors: Jad Ali Jaber, Alketa Gjoka, Saksatha Ly
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Publication number: 20210394169Abstract: Described are ion-exchange membranes that include a porous polymeric membrane and imidazole ion-exchange groups at surfaces of the membrane; ion-exchange membranes and filters that contain the ion-exchange membranes; and methods of using the ion-exchange membranes and filters for separating charged biological molecule from a liquid.Type: ApplicationFiled: June 17, 2021Publication date: December 23, 2021Inventors: Maybelle WOO, Jad A. JABER, Saksatha LY, Jeffrey E. TOWNLEY, James HAMZIK, Justin BREWSTER
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Publication number: 20210322925Abstract: Described are methods of membrane distillation for processing organic liquids, hydrophobic distillation membranes useful for membrane distillation methods, and methods of preparing the hydrophobic distillation membranes.Type: ApplicationFiled: April 16, 2021Publication date: October 21, 2021Inventors: Vinay GOEL, Jad A. JABER, Saksatha LY
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Publication number: 20200206691Abstract: The present disclosure provides a porous polymeric membrane that is coated with a cross -linked polymerized monomer. The coating on the porous polymeric membrane has a charge when it is immersed in an organic liquid. The coated porous polymeric membrane, a filter utilizing the membrane, and a method for treating an organic liquid used for photoresist with the coated porous polymeric membrane to remove metal contaminants from the organic liquid are disclosed.Type: ApplicationFiled: May 26, 2017Publication date: July 2, 2020Inventors: Jad Ali JABER, Saksatha LY, James HAMZIK, Testu KOHYAMA
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Publication number: 20190329185Abstract: Described are filter membranes coated with a polyamide, filters and filter cartridges that include the filter membranes, and methods of using and making the filter membranes.Type: ApplicationFiled: April 11, 2019Publication date: October 31, 2019Inventors: Jad Ali JABER, Kwok-Shun CHENG, Saksatha LY
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Patent number: 10150087Abstract: A purifier for removing metal, such as chromium, from an organic solvent is disclosed. The purifier comprises a housing having a fluid inlet and a fluid outlet in fluid communication with the fluid inlet; a volume of ion-exchange resin disposed within the housing downstream of the fluid inlet; and a filtration member downstream of the volume of ion-exchange resin, the filtration member comprising at least one microporous membrane having a substantially neutral surface and a microporous polytetrafluoroethylene membrane downstream of the at least one microporous membrane. A method for removing metal, including chromium, from an organic solvent using a purifier of the invention is also disclosed.Type: GrantFiled: August 12, 2015Date of Patent: December 11, 2018Assignee: Entegris, Inc.Inventors: Saksatha Ly, Wai Ming Choi
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Publication number: 20180185835Abstract: A polysulfone membrane is modified so that monomers are grafted onto the surface of the membrane. The polysulfone membranes can be grafted by contacting the membrane with a grafting solution and exposing the membrane to electromagnetic radiation, typically within the ultraviolet portion of the spectrum. The monomers that are grafted are typically anionic or cationic. The grafted membranes can be used for filtering impurities, such as positively and negatively charged particles, from a liquid. Anionic membranes provide improved filtration of negatively charged impurities, while cationic membranes provide improved filtration of positively charged impurities.Type: ApplicationFiled: November 19, 2015Publication date: July 5, 2018Inventors: Jad Ali Jaber, Alketa Gjoka, Saksatha Ly
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Publication number: 20150343391Abstract: A purifier for removing metal, such as chromium, from an organic solvent is disclosed. The purifier comprises a housing having a fluid inlet and a fluid outlet in fluid communication with the fluid inlet; a volume of ion-exchange resin disposed within the housing downstream of the fluid inlet; and a filtration member downstream of the volume of ion-exchange resin, the filtration member comprising at least one microporous membrane having a substantially neutral surface and a microporous polytetrafluoroethylene membrane downstream of the at least one microporous membrane. A method for removing metal, including chromium, from an organic solvent using a purifier of the invention is also disclosed.Type: ApplicationFiled: August 12, 2015Publication date: December 3, 2015Inventors: Saksatha Ly, Wai Ming Choi
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Publication number: 20150144557Abstract: A purifier for removing metal, such as chromium, from an organic solvent is disclosed. The purifier comprises a housing having a fluid inlet and a fluid outlet in fluid communication with the fluid inlet; a volume of ion-exchange resin disposed within the housing downstream of the fluid inlet; and a filtration member downstream of the volume of ion-exchange resin, the filtration member comprising at least one microporous membrane having a substantially neutral surface and a microporous polytetrafluoroethylene membrane downstream of the at least one microporous membrane. A method for removing metal, including chromium, from an organic solvent using a purifier of the invention is also disclosed.Type: ApplicationFiled: March 15, 2013Publication date: May 28, 2015Applicant: Entegris, Inc.Inventors: Saksatha Ly, Wai Ming Choi
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Patent number: 7316728Abstract: The present invention is directed to an apparatus for combining a component from a fluid composition with a reactive fluid. The apparatus includes a hollow fiber contactor (142) having a plurality of hollow fibers contained within a housing. A reactive fluid (224), which may be on the shell or lumen side of the hollow fiber membrane, is included in the apparatus and is used for combining with a component from a fluid composition which is on the opposite side of the membrane from the reactive liquid. The reactive liquid combines with one or more components from the fluid composition and can be used for purification of the fluid composition or for the preparation of chemical reagents.Type: GrantFiled: May 27, 2003Date of Patent: January 8, 2008Assignee: Entegris, Inc.Inventors: Bipin Parekh, Saksatha Ly, Jieh-Hwa Shyu, John E. Pillion