Patents by Inventor Michael Sha-nang Wong
Michael Sha-nang Wong 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: 9129720Abstract: This invention provides non-spherical nanoparticle compositions that are the reaction product of a source of a Group 12, 13, 14, or 15 metal or metalloid; a source of a Group 15 or 16 element; and a source of a quaternary ammonium compound or phosphonium compound; wherein nanoparticle tetrapods comprise 75-100 number percent of the nanoparticle products.Type: GrantFiled: October 17, 2012Date of Patent: September 8, 2015Assignee: William Marsh Rice UniversityInventors: Subashini Asokan, Michael Sha-nang Wong
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Patent number: 8605280Abstract: The invention relates to a multimetallic nanoshell sensor which comprises a core that is less conductive that a first metallic layer and having a catalytically active second metallic layer partially or completely surrounding the first metallic layer. The sensor can be used in any surface enhanced spectroscopic applications.Type: GrantFiled: November 6, 2008Date of Patent: December 10, 2013Assignee: William Marsh Rice UniversityInventors: Kimberly Nadia Heck, Nancy Jean Halas, Michael Sha-Nang Wong
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Patent number: 8455392Abstract: A new type of solid acid catalyst, which promises better catalytic performance than conventionally prepared supported metal oxides due to its precisely synthesized nanostructure has been described. The catalyst is nanoparticulate in form and is comprised of monolayers of tungstated zirconia of the formula, WOxZryO4-2y made by impregnating a support with zirconium and tungsten. The support catalyst is further characterized in having a tugsten monolayer between greater than 0001 W/nm2 to about 30 W/nm2.Type: GrantFiled: June 20, 2008Date of Patent: June 4, 2013Assignees: William Marsh Rice University, Lehigh UniversityInventors: Israel E. Wachs, Elizabeth I. Ross-Medgaarden, Michael Sha-nang Wong
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Publication number: 20130040143Abstract: This invention provides non-spherical nanoparticle compositions that are the reaction product of a source of a Group 12, 13, 14, or 15 metal or metalloid; a source of a Group 15 or 16 element; and a source of a quaternary ammonium compound or phosphonium compound; wherein nanoparticle tetrapods comprise 75-100 number percent of the nanoparticle products.Type: ApplicationFiled: October 17, 2012Publication date: February 14, 2013Applicant: WILLIAM MARSH RICE UNIVERSITYInventors: Subashini ASOKAN, Michael Sha-nang WONG
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Patent number: 8337809Abstract: Novel phototherapeutic methods and compositions are described herein. Nanoparticle-assembled microcapsules as a new type of delivery vehicle for photosensitive compounds may be synthesized through a two-step assembly process. Charged polymer chains and counterions may be combined with a photosensitive compound to form photosensitive aggregates, and then nanoparticles may be combined with the aggregates to form the microcapsules. The shell may be composed of nanoparticles and/or polymer, and the core interior may contain the photosensitive compound. Formation occurs rapidly (on the order of seconds) and the conditions are very mild (at room temperature, in aqueous solution, and at neutral pH). The microcapsule synthesis is highly suitable as an encapsulation method, particularly for a charged photosensitive molecule like ICG.Type: GrantFiled: September 11, 2007Date of Patent: December 25, 2012Assignee: William Marsh Rice UniversityInventors: Jie Yu, Michael Sha-nang Wong, Bahman Anvari, Mohammad Abbas Yaseen
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Patent number: 8313714Abstract: Embodiments of the invention provide a method of making non-spherical nanoparticles that includes (a) combining a source of a Group 12, 13, 14, or 15 metal or metalloid; a source of a Group 15 or 16 element; and a source of a quaternary ammonium compound or phosphonium compound; and (b) isolating non-spherical nanoparticles from the resulting reaction mixture. Other embodiments of the invention provide non-spherical nanoparticle compositions, that are the reaction product of a source of a Group 12, 13, 14, or 15 metal or metalloid; a source of a Group 15 or 16 element; and a source of a quaternary ammonium compound or phosphonium compound; wherein nanoparticle tetrapods comprise 75-100 number percent of the nanoparticle products.Type: GrantFiled: April 11, 2008Date of Patent: November 20, 2012Assignee: William Marsh Rice UniversityInventors: Subashini Asokan, Michael Sha-nang Wong
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Publication number: 20110090497Abstract: The invention relates to a multimetallic nanoshell sensor which comprises a core that is less conductive that a first metallic layer and having a catalytically active second metallic layer partially or completely surrounding the first metallic layer. The sensor can be used in any surface enhanced spectroscopic applications.Type: ApplicationFiled: November 6, 2008Publication date: April 21, 2011Applicant: Rice UniversityInventors: Kimberly Nadia Heck, Nancy Jean Halas, Michael Sha-Nang Wong
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Publication number: 20110059842Abstract: A new type of solid acid catalyst, which promises better catalytic performance than conventionally prepared supported metal oxides due to its precisely synthesized nanostructure has been described. The catalyst is nanoparticulate in form and is comprised of monolayers of tungstated zirconia of the formula, WOxZryO4-2y made by impregnating a support with zirconium and tungsten. The support catalyst is further characterized in having a tugsten monolayer between greater than 0001 W/nm2 to about 30 W/nm2.Type: ApplicationFiled: June 20, 2008Publication date: March 10, 2011Applicants: RICE UNIVERSITY, LEHIGH UNIVERSITYInventors: Israel E. Wachs, Elizabeth I. Ross-Medgaarden, Michael Sha-nang Wong
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Publication number: 20100047356Abstract: Novel phototherapeutic methods and compositions are described herein. Nanoparticle-assembled microcapsules as a new type of delivery vehicle for photosensitive compounds may be synthesized through a two-step assembly process. Charged polymer chains and counterions may be combined with a photosensitive compound to form photosensitive aggregates, and then nanoparticles may be combined with the aggregates to form the microcapsules. The shell may be composed of nanoparticles and/or polymer, and the core interior may contain the photosensitive compound. Formation occurs rapidly (on the order of seconds) and the conditions are very mild (at room temperature, in aqueous solution, and at neutral pH). The microcapsule synthesis is highly suitable as an encapsulation method, particularly for a charged photosensitive molecule like ICG.Type: ApplicationFiled: September 11, 2007Publication date: February 25, 2010Applicant: William Marsh Rice UniversityInventors: Jie Yu, Michael Sha-nang Wong, Bahman Anvari, Mohammad Abbas Yaseen
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Publication number: 20100025637Abstract: Embodiments of the invention provide a method of making non-spherical nanoparticles that includes (a) combining a source of a Group 12, 13, 14, or 15 metal or metalloid; a source of a Group 15 or 16 element; and a source of a quaternary ammonium compound or phosphonium compound; and (b) isolating non-spherical nanoparticles from the resulting reaction mixture. Other embodiments of the invention provide non-spherical nanoparticle compositions, that are the reaction product of a source of a Group 12, 13, 14, or 15 metal or metalloid; a source of a Group 15 or 16 element; and a source of a quaternary ammonium compound or phosphonium compound; wherein nanoparticle tetrapods comprise 75-100 number percent of the nanoparticle products.Type: ApplicationFiled: April 11, 2008Publication date: February 4, 2010Applicant: Rice UniversityInventors: Subashini Asokan, Michael Sha-nang Wong