Patents by Inventor Young-Hye Na
Young-Hye Na 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: 8856693Abstract: A method and a computer system for designing an optical photomask for forming a prepattern opening in a photoresist layer on a substrate wherein the photoresist layer and the prepattern opening are coated with a self-assembly material that undergoes directed self-assembly to form a directed self-assembly pattern. The methods includes: generating a mask design shape from a target design shape; generating a sub-resolution assist feature design shape based on the mask design shape; using a computer to generate a prepattern shape based on the sub-resolution assist feature design shape; and using a computer to evaluate if a directed self-assembly pattern of the self-assembly material based on the prepattern shape is within specified ranges of dimensional and positional targets of the target design shape on the substrate.Type: GrantFiled: September 7, 2012Date of Patent: October 7, 2014Assignee: International Business Machines CorporationInventors: Joy Cheng, Kafai Lai, Wai-Kin Li, Young-Hye Na, Jed Walter Pitera, Charles Thomas Rettner, Daniel Paul Sanders, Da Yang
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Patent number: 8821978Abstract: A method of forming a layered structure comprising a domain pattern of a self-assembled material utilizes a negative-tone patterned photoresist layer comprising non-crosslinked developed photoresist. The developed photoresist is not soluble in an organic casting solvent for a material capable of self-assembly. The developed photoresist is soluble in an aqueous alkaline developer and/or a second organic solvent. A solution comprising the material capable of self-assembly and the organic casting solvent is casted on the patterned photoresist layer. Upon removal of the organic casting solvent, the material self-assembles, thereby forming the layered structure.Type: GrantFiled: December 18, 2009Date of Patent: September 2, 2014Assignee: International Business Machines CorporationInventors: Joy Cheng, William D. Hinsberg, Ho-Cheol Kim, Young-Hye Na, Daniel Paul Sanders, Linda Karin Sundberg, Hoa D. Truong, Gregory Michael Wallraff, Atsuko Ito
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Publication number: 20140217014Abstract: A method comprises disposing, on a porous support membrane, an aqueous mixture comprising a crosslinkable polymer comprising a poly(meth)acrylate and/or poly(meth)acrylamide backbone, thereby forming an initial film layer, wherein the crosslinkable polymer comprises a side chain nucleophilic amine group capable of interfacially reacting with a multi-functional acid halide crosslinking agent to form a crosslinked polymer; contacting the initial film layer with a mixture comprising i) the multi-functional acid halide crosslinking agent, ii) an optional accelerator, and iii) an organic solvent, the organic solvent being a non-solvent for the crosslinkable polymer; and allowing the crosslinkable polymer to interfacially react with the crosslinking agent, thereby forming a composite filtration membrane comprising an anti-fouling selective layer comprising the crosslinked polymer.Type: ApplicationFiled: April 5, 2014Publication date: August 7, 2014Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Young-Hye Na, Alshakim Nelson, Ratnam Sooriyakumaran, Ankit Vora
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Patent number: 8709536Abstract: A method comprises disposing, on a porous support membrane, an aqueous mixture comprising a crosslinkable polymer comprising a poly(meth)acrylate and/or poly(meth)acrylamide backbone, thereby forming an initial film layer, wherein the crosslinkable polymer comprises a side chain nucleophilic amine group capable of interfacially reacting with a multi-functional acid halide crosslinking agent to form a crosslinked polymer; contacting the initial film layer with a mixture comprising i) the multi-functional acid halide crosslinking agent, ii) an optional accelerator, and iii) an organic solvent, the organic solvent being a non-solvent for the crosslinkable polymer; and allowing the crosslinkable polymer to interfacially react with the crosslinking agent, thereby forming a composite filtration membrane comprising an anti-fouling selective layer comprising the crosslinked polymer.Type: GrantFiled: September 1, 2010Date of Patent: April 29, 2014Assignee: International Business Machines CorporationInventors: Young-Hye Na, Alshakim Nelson, Ratnam Sooriyakumaran, Ankit Vora
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Publication number: 20140031485Abstract: A method of photo-grafting onto a separation membrane a copolymer includes at least one of: For example, in Structure 1A, x1?2 and y1?1; R1 and R2 are independently selected from the group consisting of CH3 and H; R3 is independently selected from the group consisting of poly(oxyalkylene), quaternary ammonium salts, pyridinium salts, sulfonium salts, sulfobetaines, carboxybetaines, alcohols, phenols, tertiary amines, aryl groups; linear, branched and cyclic alkylenes; linear, branched and cyclic heteroalkylenes; linear, branched and cyclic fluoroalkylenes; and siloxyl; R4 is independently selected from the group consisting of linear, branched, and cyclic alkylenes; linear, branched and cyclic hetroalkylenes; linear, branched and cyclic fluoroalkylenes; phenyl; and siloxyl; and Z1 is 0 or 1.Type: ApplicationFiled: September 4, 2013Publication date: January 30, 2014Applicant: International Business Machines CorporationInventors: Jacquana T. Diep, Young-Hye Na, Ankit Vora
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Publication number: 20130327714Abstract: A thin film composite membrane includes an active layer on a support membrane, wherein the active layer includes at least two chemically distinct first and second crosslinked polyamide film sub-layers. The first film sub-layer includes a polyamide unit; and the second film sub-layer includes a copolyamide with two chemically distinct polyamide units. The first film sub-layer is closer to the support than is the second film sub-layer.Type: ApplicationFiled: June 7, 2012Publication date: December 12, 2013Applicants: King Abdulaziz City for Science and Technology (KACST), International Business Machines CorporationInventors: Radwan A. Alrasheed, Blake W. Davis, Jacquana T. Diep, Geraud J. Dubois, Young-Hye Na, Majed S. Nassar, Ankit Vora
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Patent number: 8550256Abstract: A method of photo-grafting onto a separation membrane a copolymer includes at least one of: and; For example, in Structure 1A, x1?2 and y1?1; R1 and R2 are independently selected from the group consisting of CH3 and H; R3 is independently selected from the group consisting of poly(oxyalkylene), quaternary ammonium salts, pyridinium salts, sulfonium salts, sulfobetaines, carboxybetaines, alcohols, phenols, tertiary amines, aryl groups; linear, branched and cyclic alkylenes; linear, branched and cyclic heteroalkylenes; linear, branched and cyclic fluoroalkylenes; and siloxyl; R4 is independently selected from the group consisting of linear, branched, and cyclic alkylenes; linear, branched and cyclic hetroalkylenes; linear, branched and cyclic fluoroalkylenes; phenyl; and siloxyl; and Z1 is 0 or 1.Type: GrantFiled: July 27, 2012Date of Patent: October 8, 2013Assignee: International Business Machines CorporationInventors: Jacquana T. Diep, Young-Hye Na, Ankit Vora
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Patent number: 8398868Abstract: An opening in a substrate is formed, e.g., using optical lithography, with the opening having sidewalls whose cross section is given by segments that are contoured and convex. The cross section of the opening may be given by overlapping circular regions, for example. The sidewalls adjoin at various points, where they define protrusions. A layer of polymer including a block copolymer is applied over the opening and the substrate, and allowed to self-assemble. Discrete, segregated domains form in the opening, which are removed to form holes, which can be transferred into the underlying substrate. The positions of these domains and their corresponding holes are directed to predetermined positions by the sidewalls and their associated protrusions. The distances separating these holes may be greater or less than what they would be if the block copolymer (and any additives) were to self-assemble in the absence of any sidewalls.Type: GrantFiled: May 19, 2009Date of Patent: March 19, 2013Assignee: International Business Machines CorporationInventors: Joy Cheng, Kafai Lai, Wai-Kin Li, Young-Hye Na, Charles Rettner, Daniel P. Sanders
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Patent number: 8353410Abstract: A composite membrane includes a filtration membrane and a layer on a surface of the filtration membrane. The layer includes a polymer including a polyhedral oligomeric silsesquioxane (POSS) derivative with a hydrophilic moiety attached to at least one vertex thereof. A method for making a composite membrane includes applying to a surface of a filtration membrane a photopolymerizable composition including a POSS compound, a hydrophilic comonomer, and a photoinitiator. The composition is cured to form a hydrophilic layer on the filtration membrane.Type: GrantFiled: November 24, 2009Date of Patent: January 15, 2013Assignee: International Business Machines CorporationInventors: Robert David Allen, Young-Hye Na, Ratnam Sooriyakumaran
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Publication number: 20130001153Abstract: A polymeric membrane on a support, wherein the polymeric membrane includes a crosslinked polymer covalently bound to a molecular cage compound. An interfacial polymerization method for making the polymeric membrane is also disclosed.Type: ApplicationFiled: July 1, 2011Publication date: January 3, 2013Applicant: International Business Machines CorporationInventors: Young-Hye Na, Ratnam Sooriyakumaran, Ankit Vora, Jacquana Diep
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Publication number: 20120331428Abstract: A method and a computer system for designing an optical photomask for forming a prepattern opening in a photoresist layer on a substrate wherein the photoresist layer and the prepattern opening are coated with a self-assembly material that undergoes directed self-assembly to form a directed self-assembly pattern. The methods includes: generating a mask design shape from a target design shape; generating a sub-resolution assist feature design shape based on the mask design shape; using a computer to generate a prepattern shape based on the sub-resolution assist feature design shape; and using a computer to evaluate if a directed self-assembly pattern of the self-assembly material based on the prepattern shape is within specified ranges of dimensional and positional targets of the target design shape on the substrate.Type: ApplicationFiled: September 7, 2012Publication date: December 27, 2012Applicant: International Business Machines CorporationInventors: Joy Cheng, Kafai Lai, Wai-Kin Li, Young-Hye Na, Jed Walter Pitera, Charles Thomas Rettner, Daniel Paul Sanders, Da Yang
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Patent number: 8336003Abstract: A method and a computer system for designing an optical photomask for forming a prepattern opening in a photoresist layer on a substrate wherein the photoresist layer and the prepattern opening are coated with a self-assembly material that undergoes directed self-assembly to form a directed self-assembly pattern. The methods includes: generating a mask design shape from a target design shape; generating a sub-resolution assist feature design shape based on the mask design shape; using a computer to generate a prepattern shape based on the sub-resolution assist feature design shape; and using a computer to evaluate if a directed self-assembly pattern of the self-assembly material based on the prepattern shape is within specified ranges of dimensional and positional targets of the target design shape on the substrate.Type: GrantFiled: February 19, 2010Date of Patent: December 18, 2012Assignee: International Business Machines CorporationInventors: Joy Cheng, Kafai Lai, Wai-Kin Li, Young-Hye Na, Jed Walter Pitera, Charles Thomas Rettner, Daniel Paul Sanders, Da Yang
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Publication number: 20120241373Abstract: A polymeric membrane includes an active layer over a support, wherein the active layer includes at least two chemically distinct polyamide films. A first one of the films is in contact with the support, and a second one of the films is not in contact with the support. The second polyamide film is crosslinked with the first polyamide film at an interface therewith, and the second polyamide film includes a structure having a side chain group including an ammonium salt.Type: ApplicationFiled: March 21, 2011Publication date: September 27, 2012Applicant: International Business Machines CorporationInventors: Young-Hye Na, Ratnam Sooriyakumaran, Ankit Vora
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Publication number: 20120048799Abstract: A method comprises disposing, on a porous support membrane, an aqueous mixture comprising a crosslinkable polymer comprising a poly(meth)acrylate and/or poly(meth)acrylamide backbone, thereby forming an initial film layer, wherein the crosslinkable polymer comprises a side chain nucleophilic amine group capable of interfacially reacting with a multi-functional acid halide crosslinking agent to form a crosslinked polymer; contacting the initial film layer with a mixture comprising i) the multi-functional acid halide crosslinking agent, ii) an optional accelerator, and iii) an organic solvent, the organic solvent being a non-solvent for the crosslinkable polymer; and allowing the crosslinkable polymer to interfacially react with the crosslinking agent, thereby forming a composite filtration membrane comprising an anti-fouling selective layer comprising the crosslinked polymer.Type: ApplicationFiled: September 1, 2010Publication date: March 1, 2012Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Young-Hye Na, Alshakim Nelson, Ratnam Sooriyakumaran, Ankit Vora
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Patent number: 8114306Abstract: Methods involving the self-assembly of block copolymers are described herein, in which by beginning with openings (in one or more substrates) that have a targeted CD (critical dimension), holes are formed, in either regular arrays or arbitrary arrangements. Significantly, the percentage variation in the average diameter of the formed holes is less than the percentage variation of the average diameter of the initial openings. The formed holes (or vias) can be transferred into the underlying substrate(s), and these holes may then be backfilled with material, such as a metallic conductor. Preferred aspects of the invention enable the creation of vias with tighter pitch and better CD uniformity, even at sub-22 nm technology nodes.Type: GrantFiled: May 22, 2009Date of Patent: February 14, 2012Assignee: International Business Machines CorporationInventors: Joy Cheng, Kafai Lai, Wai-Kin Li, Young-Hye Na, Charles Rettner, Daniel P. Sanders, Da Yang
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Publication number: 20120012527Abstract: A polymeric membrane includes an active layer on a support. The active layer includes at least two chemically distinct crosslinked, polyamide films, and the films are crosslinked with each other at an interface.Type: ApplicationFiled: July 15, 2010Publication date: January 19, 2012Applicant: International Business Machines CorporationInventors: Robert David Allen, Young-Hye Na, Ratnam Sooriyakumaran
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Patent number: 8011517Abstract: A composite membrane includes a filtration membrane with a surface; and a layer on the surface of the filtration membrane. The layer includes a polymer including a poly(ethylene glycol) moiety cross-linked with an ammonium salt or a precursor of an ammonium salt.Type: GrantFiled: November 24, 2009Date of Patent: September 6, 2011Assignee: International Business Machines CorporationInventors: Robert David Allen, James Lupton Hedrick, Young-Hye Na, Alshakim Nelson, Ratnam Sooriyakumaran
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Publication number: 20110209106Abstract: A method and a computer system for designing an optical photomask for forming a prepattern opening in a photoresist layer on a substrate wherein the photoresist layer and the prepattern opening are coated with a self-assembly material that undergoes directed self-assembly to form a directed self-assembly pattern. The methods includes: generating a mask design shape from a target design shape; generating a sub-resolution assist feature design shape based on the mask design shape; using a computer to generate a prepattern shape based on the sub-resolution assist feature design shape; and using a computer to evaluate if a directed self-assembly pattern of the self-assembly material based on the prepattern shape is within specified ranges of dimensional and positional targets of the target design shape on the substrate.Type: ApplicationFiled: February 19, 2010Publication date: August 25, 2011Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Joy Cheng, Kafai Lai, Wai-Kin Li, Young-Hye Na, Jed Walter Pitera, Charles Thomas Rettner, Daniel Paul Sanders, Da Yang
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Publication number: 20110147983Abstract: A method of forming a layered structure comprising a domain pattern of a self-assembled material comprises: disposing on a substrate a photoresist layer comprising a non-crosslinking photoresist; optionally baking the photoresist layer; pattern-wise exposing the photoresist layer to first radiation; optionally baking the exposed photoresist layer; and developing the exposed photoresist layer with a non-alkaline developer to form a negative-tone patterned photoresist layer comprising non-crosslinked developed photoresist; wherein the developed photoresist is not soluble in a given organic solvent suitable for casting a given material capable of self-assembly, and the developed photoresist is soluble in an aqueous alkaline developer and/or a second organic solvent. A solution comprising the given material capable of self-assembly dissolved in the given organic solvent is casted on the patterned photoresist layer, and the given organic solvent is removed.Type: ApplicationFiled: December 18, 2009Publication date: June 23, 2011Inventors: Joy CHENG, William D. HINSBERG, Hiroshi ITO, Atsuko Ito, Ho-Cheol KIM, Young-Hye NA, Daniel P. SANDERS, Linda Karin SUNDBERG, Hoa D. TRUONG, Gregory Michael WALLRAFF
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Publication number: 20110120940Abstract: A composite membrane includes a filtration membrane and a layer on a surface of the filtration membrane. The layer includes a polymer including a polyhedral oligomeric silsesquioxane (POSS) derivative with a hydrophilic moiety attached to at least one vertex thereof. A method for making a composite membrane includes applying to a surface of a filtration membrane a photopolymerizable composition including a POSS compound, a hydrophilic comonomer, and a photoinitiator. The composition is cured to form a hydrophilic layer on the filtration membrane.Type: ApplicationFiled: November 24, 2009Publication date: May 26, 2011Inventors: Robert David Allen, Young-Hye Na, Ratnam Sooriyakumaran