Patents by Inventor Xiangxin Bi
Xiangxin Bi 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: 7384680Abstract: Methods are described that have the capability of producing submicron/nanoscale particles, in some embodiments dispersible, at high production rates. In some embodiments, the methods result in the production of particles with an average diameter less than about 75 nanometers that are produced at a rate of at least about 35 grams per hour. In other embodiments, the particles are highly uniform. These methods can be used to form particle collections and/or powder coatings. Powder coatings and corresponding methods are described based on the deposition of highly uniform submicron/nanoscale particles.Type: GrantFiled: July 15, 2002Date of Patent: June 10, 2008Assignee: NanoGram CorporationInventors: Xiangxin Bi, Nobuyuki Kambe, Craig R. Horne, James T. Gardner, Ronald J. Mosso, Shivkumar Chiruvolu, Sujeet Kumar, William E. McGovern, Pierre J. DeMascarel, Robert B. Lynch
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Publication number: 20080131357Abstract: Collections of particles comprising multiple a metal oxide can be formed with average particle sizes less than about 500 nm. In some embodiments, the particle collections have particle size distributions such that at least about 95 percent of the particles have a diameter greater than about 40 percent of the average diameter and less than about 160 percent of the average diameter. Also, in further embodiments, the particle collections have particle size distribution such that effectively no particles have a diameter greater than about four times the average diameter of the collection of particles.Type: ApplicationFiled: January 16, 2008Publication date: June 5, 2008Inventors: Sujeet Kumar, Hariklia Dris Reitz, Craig R. Home, James T. Gardner, Ronald J. Mosso, Xiangxin Bi
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Publication number: 20080069945Abstract: Nanoscale particles, particle coatings/particle arrays and corresponding consolidated materials are described based on an ability to vary the composition involving a wide range of metal and/or metalloid elements and corresponding compositions. In particular, metalloid oxides and metal-metalloid compositions are described in the form of improved nanoscale particles and coatings formed from the nanoscale particles. Compositions comprising rare earth metals and dopants/additives with rare earth metals are described. Complex compositions with a range of host compositions and dopants/additives can be formed using the approaches described herein. The particle coating can take the form of particle arrays that range from collections of disbursable primary particles to fused networks of primary particles forming channels that reflect the nanoscale of the primary particles. Suitable materials for optical applications are described along with some optical devices of interest.Type: ApplicationFiled: October 19, 2007Publication date: March 20, 2008Inventors: Craig Horne, Pierre DeMascarel, Christian Honeker, Benjamin Chaloner-Gill, Herman Lopez, Xiangxin Bi, Ronald Mosso, William McGovern, James Gardner, Sujeet Kumar, James Gilliam, Vince Pham, Eric Euvrard, Shivkumar Chiruvolu, Jesse Jur
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Publication number: 20080026220Abstract: Methods are described that have the capability of producing submicron/nanoscale particles, in some embodiments dispersible, at high production rates. In some embodiments, the methods result in the production of particles with an average diameter less than about 75 nanometers that are produced at a rate of at least about 35 grams per hour. In other embodiments, the particles are highly uniform. These methods can be used to form particle collections and/or powder coatings. Powder coatings and corresponding methods are described based on the deposition of highly uniform submicron/nanoscale particles.Type: ApplicationFiled: July 15, 2002Publication date: January 31, 2008Inventors: Xiangxin Bi, Nobuyuki Kambe, Craig Horne, James Gardner, Ronald Mosso, Shivkumar Chiruvolu, Sujeet Kumar, William McGovern, Pierre DeMascarel, Robert Lynch
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Patent number: 7323158Abstract: Collections of particles comprising multiple a metal oxide can be formed with average particle sizes less than about 500 nm. In some embodiments, the particle collections have particle size distributions such that at least about 95 percent of the particles have a diameter greater than about 40 percent of the average diameter and less than about 160 percent of the average diameter. Also, in further embodiments, the particle collections have particle size distribution such that effectively no particles have a diameter greater than about four times the average diameter of the collection of particles.Type: GrantFiled: September 4, 2003Date of Patent: January 29, 2008Assignee: NanoGram CorporationInventors: Sujeet Kumar, Hariklia Dris Reitz, Craig R. Horne, James T. Gardner, Ronald J. Mosso, Xiangxin Bi
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Publication number: 20080003522Abstract: Nanoscale UV absorbing particles are described that have high UV absorption cross sections while being effectively transparent to visible light. These particles can be used to shield individuals from harmful ultraviolet radiation. These particles can also be used in industrial processing especially to produce solid state electronic devices by creating edges of photoresist material with a high aspect ratio. The UV absorbing particles can also be used as photocatalysts that become strong oxidizing agents upon exposure to UV light. Laser pyrolysis provides an efficient method for the production of suitable particles.Type: ApplicationFiled: February 2, 2007Publication date: January 3, 2008Inventors: Nobuyuki Kambe, Xiangxin Bi
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Patent number: 7306845Abstract: Nanoscale particles, particle coatings/particle arrays and corresponding consolidated materials are described based on an ability to vary the composition involving a wide range of metal and/or metalloid elements and corresponding compositions. In particular, metalloid oxides and metal-metalloid compositions are described in the form of improved nanoscale particles and coatings formed from the nanoscale particles. Compositions comprising rare earth metals and dopants/additives with rare earth metals are described. Complex compositions with a range of host compositions and dopants/additives can be formed using the approaches described herein. The particle coating can take the form of particle arrays that range from collections of disbursable primary particles to fused networks of primary particles forming channels that reflect the nanoscale of the primary particles. Suitable materials for optical applications are described along with some optical devices of interest.Type: GrantFiled: October 29, 2004Date of Patent: December 11, 2007Assignee: NeoPhotonics CorporationInventors: Craig R. Horne, Pierre J. DeMascarel, Christian C. Honeker, Benjamin Chaloner-Gill, Herman A. Lopez, Xiangxin Bi, Ronald J. Mosso, William E. McGovern, James T. Gardner, Sujeet Kumar, James A. Gilliam, Vince Pham, Eric Euvrard, Shivkumar Chiruvolu, Jesse Jur
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Patent number: 7258706Abstract: Polishing compositions are described that are appropriate for fine polishing to very low tolerances. The polishing compositions include particles with small diameters with very narrow distributions in size and effectively no particles with diameters several times larger than the average diameter. Furthermore, the particles generally have very high uniformity with respect to having a single crystalline phase. Preferred particles have an average diameter less than about 200 nm. Laser pyrolysis processes are described for the production of the appropriate particles including metal oxides, metal carbides, metal sulfides, SiO2 and SiC.Type: GrantFiled: April 24, 2001Date of Patent: August 21, 2007Assignee: NanoGram CorporationInventors: Nobuyuki Kambe, Xiangxin Bi
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Patent number: 7214446Abstract: Batteries based on nanoparticles are demonstrated that achieve high energy densities. Vanadium oxide nanoparticles can have several different stoichiometries and corresponding crystal lattices. The nanoparticles preferably have average diameters less than about 500 nm and more preferably less than about 150 nm. Cathodes produced using the vanadium oxide nanoparticles and a binder can be used to construct lithium batteries or lithium ion batteries. The nanoparticles may have energy densities greater than about 900 Wh/kg.Type: GrantFiled: June 29, 2000Date of Patent: May 8, 2007Assignee: NanoGram CorporationInventors: Xiangxin Bi, Nobuyuki Kambe, Sujeet Kumar, James T. Gardner
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Patent number: 7132783Abstract: Small particles provide for improved performance as phosphors especially in the production of display devices. Particles with an diameter less than about 100 nm have altered band properties that affect the emission by the particles. A collection of such small particles with a narrow distribution around a selected average diameter can be used to produce emission at a desired frequency. These particles are effective for producing a wide variety of display types including flat panel displays. Laser pyrolysis provides an efficient process for the production of desired particles.Type: GrantFiled: October 31, 1997Date of Patent: November 7, 2006Assignee: NanoGram CorporationInventors: Nobuyuki Kambe, Xiangxin Bi
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Patent number: 7112449Abstract: Combinatorial synthesis methods obtain a plurality of compositions having materially different characteristics using an apparatus having a plurality of collectors. A first quantity of fluid reactants are reacted to form a first quantity of product composition. Following completion of the collection of the first quantity of product composition, a second quantity of fluid reactants are reacted to form a second quantity of product composition, the second quantity of product composition being material different from the first quantity of product composition. An apparatus includes a nozzle connected to a reactant source and a plurality of collectors. The nozzle and plurality of collectors move relative to each other such that a collector can be selectively placed to receive a fluid stream emanating from the nozzle. The plurality of product compositions can be evaluated to determine their suitability for various applications.Type: GrantFiled: April 25, 2000Date of Patent: September 26, 2006Assignee: NanoGram CorporationInventors: Xiangxin Bi, Sujeet Kumar, Craig R. Horne, Ronald J. Mosso, James T. Gardner, Shivkumar Chiruvolo, Seung M. Lim
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Publication number: 20060147369Abstract: Methods are described that have the capability of producing submicron/nanoscale particles, in some embodiments dispersible, at high production rates. In some embodiments, the methods result in the production of particles with an average diameter less than about 75 nanometers that are produced at a rate of at least about 35 grams per hour. In other embodiments, the particles are highly uniform. These methods can be used to form particle collections and/or powder coatings. Powder coatings and corresponding methods are described based on the deposition of highly uniform submicron/nanoscale particles.Type: ApplicationFiled: February 17, 2006Publication date: July 6, 2006Inventors: Xiangxin Bi, Nobuyuki Kambe, Craig Horne, James Gardner, Ronald Mosso, Shivkumar Chiruvolu, Sujeet Kumar, William McGovern, Pierre DeMascarel, Robert Lynch
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Publication number: 20060141142Abstract: Monolithic optical structures include a plurality of layer with each layer having an isolated optical pathway confined within a portion of the layer. The monolithic optical structure can be used as an optical fiber preform. Alternatively or additionally, the monolithic optical structure can include integrated optical circuits within one or more layers of the structure. Monolithic optical structures can be formed by performing multiple passes of a substrate through a flowing particle stream. The deposited particles form an optical material following consolidation. Flexible optical fibers include a plurality of independent light channels extending along the length of the optical fiber. The fibers can be pulled from an appropriate preform.Type: ApplicationFiled: February 21, 2006Publication date: June 29, 2006Inventors: Michael Bryan, Xiangxin Bi
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Publication number: 20060132020Abstract: Small particles provide for improved performance as phosphors especially in the production of display devices. Particles with a diameter less than about 100 nm have altered band properties that affect the emission by the particles. A collection of such small particles with a narrow distribution around a selected average diameter can be used to produce emission at a desired frequency. These particles are effective for producing a wide variety of display types including flat panel displays. Laser pyrolysis provides an efficient process for the production of desired particles.Type: ApplicationFiled: January 25, 2006Publication date: June 22, 2006Inventors: Nobuyuki Kambe, Xiangxin Bi
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Patent number: 7039264Abstract: Monolithic optical structures include a plurality of layer with each layer having an isolated optical pathway confined within a portion of the layer. The monolithic optical structure can be used as an optical fiber preform. Alternatively or additionally, the monolithic optical structure can include integrated optical circuits within one or more layers of the structure. Monolithic optical structures can be formed by performing multiple passes of a substrate through a flowing particle stream. The deposited particles form an optical material following consolidation. Flexible optical fibers include a plurality of independent light channels extending along the length of the optical fiber. The fibers can be pulled from an appropriate preform.Type: GrantFiled: April 22, 2003Date of Patent: May 2, 2006Assignee: NeoPhotonics CorporationInventors: Michael A. Bryan, Xiangxin Bi
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Patent number: 7029513Abstract: An aerosol delivery apparatus is used to deliver an aerosol into a reaction chamber for chemical reaction to produce reaction products such as nanoparticles. A variety of improved aerosol delivery approaches provide for the production of more uniform reaction products. In preferred embodiments, a reaction chamber is used that has a cross section perpendicular to the flow of reactant having a dimension along a major axis greater than a dimension along a minor axis. The aerosol preferably is elongated along the major axis of the reaction chamber.Type: GrantFiled: January 17, 2003Date of Patent: April 18, 2006Assignee: NanoGram CorporationInventors: James T. Gardner, Sujeet Kumar, Ronald M. Cornell, Ronald J. Mosso, Xiangxin Bi
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Publication number: 20050264811Abstract: Three dimensional optical structures are described that can have various integrations between optical devices within and between layers of the optical structure. Optical turning elements can provide optical pathways between layers of optical devices. Methods are described that provide for great versatility on contouring optical materials throughout the optical structure. Various new optical devices are enabled by the improved optical processing approaches.Type: ApplicationFiled: July 28, 2005Publication date: December 1, 2005Inventors: Xiangxin Bi, Elizabeth Nevis, Ronald Mosso, Michael Chapin, Shivkumar Chiruvolu, Sardar Khan, Sujeet Kumar, Herman Lopez, Nguyen Huy, Craig Horne, Michael Bryan, Eric Euvrard
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Publication number: 20050232878Abstract: Nanoscale UV absorbing particles are described that have high UV absorption cross sections while being effectively transparent to visible light. These particles can be used to shield individuals from harmful ultraviolet radiation. These particles can also be used in industrial processing especially to produce solid state electronic devices by creating edges of photoresist material with a high aspect ratio. The UV absorbing particles can also be used as photocatalysts that become strong oxidizing agents upon exposure to LV light. Laser pyrolysis provides an efficient method for the production of suitable particles.Type: ApplicationFiled: June 8, 2005Publication date: October 20, 2005Inventors: Nobuyuki Kambe, Xiangxin Bi
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Patent number: 6952504Abstract: Three dimensional optical structures are described that can have various integrations between optical devices within and between layers of the optical structure. Optical turning elements can provide optical pathways between layers of optical devices. Methods are described that provide for great versatility on contouring optical materials throughout the optical structure. Various new optical devices are enabled by the improved optical processing approaches.Type: GrantFiled: December 21, 2001Date of Patent: October 4, 2005Assignee: NeoPhotonics CorporationInventors: Xiangxin Bi, Elizabeth Anne Nevis, Ronald J. Mosso, Michael Edward Chapin, Shivkumar Chiruvolu, Sardar Hyat Khan, Sujeet Kumar, Herman Adrian Lopez, Nguyen Tran The Huy, Craig Richard Horne, Michael A. Bryan, Eric Euvrard
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Publication number: 20050200036Abstract: Improvements to chemical reaction systems provide for the production of commercial quantities of chemical products, such as chemical powders. The improved chemical reaction systems can accommodate a large reactant flux for the production of significant amounts of product. Preferred reaction systems are based on laser pyrolysis. Features of the system provide for the production of highly uniform product particles.Type: ApplicationFiled: May 3, 2005Publication date: September 15, 2005Inventors: Ronald Mosso, Xiangxin Bi, James Gardner, Sujeet Kumar, Samuel Phillip