Patents by Inventor Q. Jason Niu
Q. Jason Niu 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: 20110120942Abstract: A modified polyamide membrane and method for making and using the same. The present invention includes many embodiments including methods comprising contacting a polyamide membrane with certain modifiers, including but not limited to certain oxazoline and/or thiazoline-based compounds, derivatives and polymers thereof. In one embodiment, the surface of a polyamide membrane is coated with a solution including a polyoxazoline and optionally a polyalkylene oxide material, followed by optional heating. Preferred embodiments may exhibit improved performance, e.g. increased rejection of certain species, (e.g. sodium chloride and/or boric oxides such as boric acid or various borate salts), reduced fouling, improved antimicrobial properties, and/or improved storage stability.Type: ApplicationFiled: January 31, 2011Publication date: May 26, 2011Inventors: Q. Jason Niu, William E. Mickols, Chunming Zhang
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Patent number: 7905361Abstract: A modified polyamide membrane and method for making and using the same. The present invention includes many embodiments including methods comprising contacting a polyamide membrane with certain modifiers, including but not limited to certain oxazoline and/or thiazoline-based compounds, derivatives and polymers thereof. In one embodiment, the surface of a polyamide membrane is coated with a solution including a polyoxazoline and optionally a polyalkylene oxide material, followed by optional heating. Preferred embodiments may exhibit improved performance, e.g. increased rejection of certain species, (e.g. sodium chloride and/or boric oxides such as boric acid or various borate salts), reduced fouling, improved antimicrobial properties, and/or improved storage stability.Type: GrantFiled: January 31, 2008Date of Patent: March 15, 2011Assignee: Dow Global Technologies LLCInventors: Q. Jason Niu, William E. Mickols, Chunming Zhang
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Patent number: 7882963Abstract: A multilayered modified membrane and method for making the same, comprising a modified discriminating layer that can have a fouling resistant surface, improved salt rejection, antimicrobial properties, and/or improved solute, and/or small organics rejection as compared to membranes with unmodified discriminating layers.Type: GrantFiled: April 12, 2007Date of Patent: February 8, 2011Assignee: Dow Global Technologies Inc.Inventors: William E. Mickols, Richard C. Krauss, Q. Jason Niu, Carleton L Gaupp
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Patent number: 7635741Abstract: This invention is a monomer comprising at least two dienophile groups and at least two ring structures which ring structures are characterized by the presence of two conjugated carbon-to-carbon double bonds and the presence of a leaving group L, wherein L is characterized that when the ring structure reacts with a dienophile in the presence of heat or other energy sources, L is removed to form an aromatic ring structure. This invention is also curable oligomers and polymers and highly cross-linked polymers made with such monomers. Moreover, this invention is a method of making porous films by combining such monomers or their oligomers with a porogen, curing the polymer and removing the porogen.Type: GrantFiled: February 12, 2003Date of Patent: December 22, 2009Inventors: Q. Jason Niu, Robert E. Hefner, Jr., James P. Godschalx, James T. Pechacek, Kim E. Arndt
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Publication number: 20090220690Abstract: Composite membranes that exhibit long-term resistance to biofouling comprise a porous support and a crosslinked polyamide discriminating layer having an external surface, the discriminating layer comprising a branched poly(alkylene oxide) (PAO) polymer attached to its external surface. The branched PAO polymer typically has the structure of a molecular comb or brush, and is made by polymerization of a PAO macromonomer of the following formula: RO—[(CHR?)n—O]m—V in which R is hydrogen or a C1-20 aliphatic or aromatic group, V is any group containing a polymerizable site, each R? is independently hydrogen or a short chain alkyl group, n is an integer of 1-6, and m is an integer of 1 to about 200. The ? end group can be either polymerized or copolymerized.Type: ApplicationFiled: March 16, 2009Publication date: September 3, 2009Inventors: Q. Jason Niu, William Edward Mickols
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Publication number: 20090194479Abstract: A modified polyamide membrane and method for making and using the same. The present invention includes many embodiments including methods comprising contacting a polyamide membrane with certain modifiers, including but not limited to certain oxazoline and/or thiazoline-based compounds, derivatives and polymers thereof. In one embodiment, the surface of a polyamide membrane is coated with a solution including a polyoxazoline and optionally a polyalkylene oxide material, followed by optional heating. Preferred embodiments may exhibit improved performance, e.g. increased rejection of certain species, (e.g. sodium chloride and/or boric oxides such as boric acid or various borate salts), reduced fouling, improved antimicrobial properties, and/or improved storage stability.Type: ApplicationFiled: April 15, 2009Publication date: August 6, 2009Inventors: Q. Jason Niu, William E. Mickols, Chunming Zhang
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Publication number: 20090159527Abstract: A multilayered modified membrane and method for making the same, comprising a modified discriminating layer that can have a fouling resistant surface, improved salt rejection, antimicrobial properties, and/or improved solute, and/or small organics rejection as compared to membranes with unmodified discriminating layers.Type: ApplicationFiled: April 12, 2007Publication date: June 25, 2009Inventors: William E. Mickols, Richard C. Krauss, Q. Jason Niu, Carleton L. Gaupp
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Publication number: 20080227882Abstract: A compound (monomer) comprising i) one or more dienophile groups (A-functional groups), ii) one or more ring structures comprising two conjugated carbon-to-carbon double bonds and a leaving group L (B-functional groups), and iii) one or more chemically bound poragens, characterized in that the A-functional group of one monomer is capable of reaction under cycloaddition reaction conditions with the B-functional group of a second monomer to thereby form a cross-linked, polyphenylene polymer.Type: ApplicationFiled: September 15, 2004Publication date: September 18, 2008Inventors: Jerry L. Hahnfeld, John W. Lyons, Q. Jason Niu
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Publication number: 20080185332Abstract: A modified polyamide membrane and method for making and using the same. The present invention includes many embodiments including methods comprising contacting a polyamide membrane with certain modifiers, including but not limited to certain oxazoline and/or thiazoline-based compounds, derivatives and polymers thereof. In one embodiment, the surface of a polyamide membrane is coated with a solution including a polyoxazoline and optionally a polyalkylene oxide material, followed by optional heating. Preferred embodiments may exhibit improved performance, e.g. increased rejection of certain species, (e.g. sodium chloride and/or boric oxides such as boric acid or various borate salts), reduced fouling, improved antimicrobial properties, and/or improved storage stability.Type: ApplicationFiled: January 31, 2008Publication date: August 7, 2008Applicant: Dow Global Technologies Inc.Inventors: Q. Jason Niu, William E. Mickols, Chunming Zhang
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Patent number: 7399504Abstract: The present invention relates to a method for preparing polymeric films, preferably electroactive films, with enhanced physical properties by the steps of applying to a substrate a solution of a polymer containing pendant labile solubilizing groups, then removing the solvent and a sufficient concentration of the labile solubilizing groups render the polymer less soluble in the solvent than before the labile groups were removed. It is believed that the removal of pendant soluble groups a) permits optimization of the semiconducting backbone for charge transport performance, b) allows direct control of microstructure in the final film, and c) renders the final film more robust during subsequent process steps needed to construct multilayer devices.Type: GrantFiled: September 8, 2004Date of Patent: July 15, 2008Assignee: Dow Global Technologies Inc.Inventors: Mitchell Gene Dibbs, Michael Inbasekaran, Paul Henson Townsend, III, Kenneth L. Foster, Shaoguang S. Feng, David J. Brennan, Q. Jason Niu, James P. Godschalx, Dean M. Welsh, Ray E. Drumright
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Publication number: 20080142930Abstract: A low-k organic dielectric material having stable nano-sized porous is provided as well as a method of fabricating the same. The porous low-k organic dielectric material is made from a composition of matter having a vitrification temperature (Tv-comp) which includes a b-staged thermosetting resin having a vitrification temperate (Tv-resin), a pore generating material, and a reactive additive. The reactive additive lowers Tv-comp below Tv-resin.Type: ApplicationFiled: February 21, 2008Publication date: June 19, 2008Applicants: INTERNATIONAL BUSINESS MACHINES CORPORATION, DOW GLOBAL TECHNOLOGIES, INC.Inventors: Eric Connor, James P. Godschalx, Craig J. Hawker, James L. Hedrick, Victor Yee-Way Lee, Teddie P. Magbitang, Robert D. Miller, Q. Jason Niu, Willi Volksen
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Patent number: 7381850Abstract: A monomer suitable for use in forming low dielectric constant films in semiconductor devices comprising i) two dienophile groups (A-functional groups) attached to a single aromatic ring and ii) a second ring structure comprising two conjugated carbon-to-carbon double bonds and a leaving group L (B-functional group), characterized in that said single aromatic ring is directly covalently attached to one of the double bonded carbons of the B functional group or to a fused aromatic ring containing two such double bonded carbons of the B-functional group, and one A-functional group of one monomer is capable of reaction under cycloaddition reaction conditions with the B-functional group of a second monomer to thereby form a polymer.Type: GrantFiled: April 1, 2004Date of Patent: June 3, 2008Assignee: Dow Global Technologies Inc.Inventors: James P. Godschalx, Robert E. Hefner, Jr., Q. Jason Niu, H. Craig Silvis
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Patent number: 7368483Abstract: A low-k organic dielectric material having stable nano-sized porous is provided as well as a method of fabricating the same. The porous low-k organic dielectric material is made from a composition of matter having a vitrification temperature (Tv-comp) which includes a b-staged thermosetting resin having a vitrification temperate (Tv-resin), a pore generating material, and a reactive additive. The reactive additive lowers Tv-comp below Tv-resin.Type: GrantFiled: April 19, 2004Date of Patent: May 6, 2008Assignees: International Business Machines Corporation, Dow Global Technologies, Inc.Inventors: Eric Connor, James P. Godschalx, Craig J. Hawker, James L. Hedrick, Victor Yee-Way Lee, Teddie P. Magbitang, Robert D. Miller, Q. Jason Niu, Willi Volksen
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Publication number: 20080090007Abstract: A method comprising forming a coating solution which comprises a matrix precursor material, a porogen material and a solvent, by selecting a polyarylene matrix precursor material which cross-links to form a matrix with a calculated cross-link moeity density of at least 0.003 moles/ml, and reacting the polyarylene matrix precursor material with a porogen which is linear oligomer or polymer which is formed from monomers comprising alkenyl or alkynyl functional monomers, which has reactive end groups and a weight average molecular weight in the range of less than about 5000, where the porogen is present in amounts in the range of about 10 to less than 50 percent by weight based on total weight of porogens and matrix precursor material.Type: ApplicationFiled: June 10, 2004Publication date: April 17, 2008Inventors: Q. Jason Niu, Jerry Hahnfeld, John Lyons, James Sedon, H. Silvis
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Publication number: 20070251883Abstract: Composite membranes that exhibit long-term resistance to biofouling comprise a porous support and a crosslinked polyamide discriminating layer having an external surface, the discriminating layer comprising a branched poly(alkylene oxide) (PAO) polymer attached to its external surface. The branched PAO polymer typically has the structure of a molecular comb or brush, and is made by polymerization of a PAO macromonomer of the following formula: RO—[(CHR?)n—O]m-V in which R is hydrogen or a C1-20 aliphatic or aromatic group, V is any group containing a polymerizable site, each R? is independently hydrogen or a short chain alkyl group, n is an integer of 1-6, and m is an integer of 1 to about 200. The ? end group can be either polymerized or copolymerized.Type: ApplicationFiled: April 28, 2006Publication date: November 1, 2007Inventor: Q. Jason Niu
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Publication number: 20040253442Abstract: The present invention is a method comprising: providing a substrate; solvent coating onto the substrate a composition comprising a curable, highly aromatic, organic matrix material and porogens which are cross-linked nanoparticles consisting essentially of residual monomeric units derived from alkenyl functional and/or alkynyl functional aromatic monomers; and heating the coated substrate to a temperature no greater than 390° C., preferably no greater than 370° C., to cure the matrix and remove substantially all of the porogen material in a relatively short period of time to form small uniform pores in the cured highly organic matrix material.Type: ApplicationFiled: June 11, 2003Publication date: December 16, 2004Inventors: Ervin Mubarekyan, Thomas H. Kalantar, H. Craig Silvis, Q. Jason Niu
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Publication number: 20040198850Abstract: A low-k organic dielectric material having stable nano-sized porous is provided as well as a method of fabricating the same. The porous low-k organic dielectric material is made from a composition of matter having a vitrification temperature (Tv-comp) which includes a b-staged thermosetting resin having a vitrification temperate (Tv-resin), a pore generating material, and a reactive additive. The reactive additive lowers Tv-comp below Tv-resin.Type: ApplicationFiled: April 19, 2004Publication date: October 7, 2004Applicants: INTERNATIONAL BUSINESS MACHINES CORPORATION, DOW GLOBAL TECHNOLOGIES INC.Inventors: Eric Connor, James P. Godschalx, Craig J. Hawker, James L. Hedrick, Victor Yee-Way Lee, Teddie P. Magbitang, Robert D. Miller, Q. Jason Niu, Willi Volksen
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Publication number: 20040054111Abstract: This invention is cross-linked, polymerized hydrocarbon particles which composition is characterized in that the particles have an average diameter of less than 30 nm, the particles exhibit a volume swell factor of no greater than 3.0; the composition is essentially free of metal ions; the particles have a polydispersity (polystyrene relative Mw/Mn) of less than 3.0, and the particles are characterized by a Mark-Houwink plot having a slope with an absolute value of less than 0.4 for the peak molecular weight range. The invention is also a method of making nanoparticles having a weight average diameter less than 30 nm by emulsion polymerization in the substantial absence of ionic components. Finally, the invention is a method of using such particles as thermally degradable components in making porous films.Type: ApplicationFiled: July 15, 2003Publication date: March 18, 2004Inventors: Thomas H. Kalantar, Q. Jason Niu, Christopher J. Tucker, Christopher H. Domke
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Publication number: 20040053033Abstract: This invention is a monomer comprising at least two dienophile groups and at least two ring structures which ring structures are characterized by the presence of two conjugated carbon-to-carbon double bonds and the presence of a leaving group L, wherein L is characterized that when the ring structure reacts with a dienophile in the presence of heat or other energy sources, L is removed to form an aromatic ring structure. This invention is also curable oligomers and polymers and highly cross-linked polymers made with such monomers. Moreover, this invention is a method of making porous films by combining such monomers or their oligomers with a porogen, curing the polymer and removing the porogen.Type: ApplicationFiled: February 12, 2003Publication date: March 18, 2004Inventors: Q. Jason Niu, Robert E. Hefner, James P. Godschalx, James T. Pechacek, Kim E. Arndt
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Publication number: 20030165625Abstract: Applicants found that selection of reactive nanoparticles as poragens when combined with monomeric precusors to organic, particularly polyarylene or polyarylene ether, matrix materials are effective in obtaining very small pore sizes.Type: ApplicationFiled: February 15, 2002Publication date: September 4, 2003Inventors: Ying Hung So, Q. Jason Niu, Paul H. Townsend, Steve J. Martin, Thomas H. Kalantar, James Peter Godschalx, Kennethus J. Bruza, Kevin J. Bouck