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).

  • Patent number: 9939579
    Abstract: 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: Grant
    Filed: February 21, 2006
    Date of Patent: April 10, 2018
    Assignee: NeoPhotonics Corporation
    Inventors: Michael A. Bryan, Xiangxin Bi
  • Patent number: 9163308
    Abstract: Light reactive deposition uses an intense light beam to form particles that are directly coated onto a substrate surface. In some embodiments, a coating apparatus comprising a noncircular reactant inlet, optical elements forming a light path, a first substrate, and a motor connected to the apparatus. The reactant inlet defines a reactant stream path. The light path intersects the reactant stream path at a reaction zone with a product stream path continuing from the reaction zone. The substrate intersects the product stream path. Also, operation of the motor moves the first substrate relative to the product stream. Various broad methods are described for using light driven chemical reactions to produce efficiently highly uniform coatings.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: October 20, 2015
    Assignee: NanoGram Corporation
    Inventors: Xiangxin Bi, Ronald J. Mosso, Shivkumar Chiruvolu, Sujeet Kumar, James T. Gardner, Seung M. Lim, William E. McGovern
  • Publication number: 20150037513
    Abstract: High rate deposition methods comprise depositing a powder coating from a product flow. The product flow results from a chemical reaction within the flow. Some of the powder coatings consolidate under appropriate conditions into an optical coating. The substrate can have a first optical coating onto which the powder coating is placed. The resulting optical coating following consolidation can have a large index-of-refraction difference with the underlying first optical coating, high thickness and index-of-refraction uniformity across the substrate and high thickness and index-of-refraction uniformity between coatings formed on different substrates under equivalent conditions. In some embodiments, the deposition can result in a powder coating of at least about 100 nm in no more than about 30 minutes with a substrate having a surface area of at least about 25 square centimeters.
    Type: Application
    Filed: September 17, 2014
    Publication date: February 5, 2015
    Inventors: Xiangxin Bi, Herman A. Lopez, Prasad Narasimha, Eric Euvrard, Ronald J. Mosso
  • Patent number: 8865271
    Abstract: High rate deposition methods comprise depositing a powder coating from a product flow. The product flow results from a chemical reaction within the flow. Some of the powder coatings consolidate under appropriate conditions into an optical coating. The substrate can have a first optical coating onto which the powder coating is placed. The resulting optical coating following consolidation can have a large index-of-refraction difference with the underlying first optical coating, high thickness and index-of-refraction uniformity across the substrate and high thickness and index-of-refraction uniformity between coatings formed on different substrates under equivalent conditions. In some embodiments, the deposition can result in a powder coating of at least about 100 nm in no more than about 30 minutes with a substrate having a surface area of at least about 25 square centimeters.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: October 21, 2014
    Assignee: NeoPhotonics Corporation
    Inventors: Xiangxin Bi, Herman A. Lopez, Prasad Narasimha, Eric Euvrard, Ronald J. Mosso
  • Patent number: 8673407
    Abstract: 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: Grant
    Filed: July 28, 2005
    Date of Patent: March 18, 2014
    Assignee: NeoPhotonics Corporation
    Inventors: 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
  • Patent number: 8568684
    Abstract: 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: Grant
    Filed: January 13, 2010
    Date of Patent: October 29, 2013
    Assignee: NanoGram Corporation
    Inventors: Xiangxin Bi, Nobuyuki Kambe, James T. Gardner, Ronald J. Mosso, Shivkumar Chiruvolu, Sujeet Kumar, William E. McGovern
  • Publication number: 20120244060
    Abstract: 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: Application
    Filed: January 13, 2010
    Publication date: September 27, 2012
    Inventors: 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
  • Publication number: 20120012032
    Abstract: 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: Application
    Filed: September 22, 2011
    Publication date: January 19, 2012
    Inventors: 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
  • Patent number: 8048523
    Abstract: 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: Grant
    Filed: May 26, 2009
    Date of Patent: November 1, 2011
    Assignee: NanoGram Corporation
    Inventors: Nobuyuki Kambe, Xiangxin Bi
  • Patent number: 7905114
    Abstract: Optical fiber preforms can comprise a glass preform structure with an inner cavity. A powder can be placed within the inner cavity having an average primary particle size of less than about one micron. The powder can be in the form of an unagglomerated particles or a powder coating with a degree of agglomeration or hard fusing ranging from none to significant amounts as long as the primary particles are visible in a micrograph. Powders can be placed within a preform structure by forming a slurry with a dispersion of submicron/nanoscale particles within a cavity within the preform. In other embodiments, a powder coating is formed within a preform structure by depositing the powder coating directly from a reaction product stream. The formation of the powder coating can be formed within the reaction chamber or outside of the reaction chamber by flowing the product particle stream through a conduit leading to the preform structure. In additional embodiments, a powder coating is placed on an insert, e.g.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: March 15, 2011
    Assignee: NeoPhotonics Corporation
    Inventors: Craig R. Horne, Jesse S. Jur, Ronald J. Mosso, Eric H. Euvrard, Xiangxin Bi
  • Publication number: 20100209328
    Abstract: 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: Application
    Filed: January 13, 2010
    Publication date: August 19, 2010
    Inventors: 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
  • Patent number: 7776406
    Abstract: 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: Grant
    Filed: October 19, 2007
    Date of Patent: August 17, 2010
    Assignee: NeoPhotonics Corporation
    Inventors: 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
  • Patent number: 7722787
    Abstract: Metal vanadium oxide particles have been produced with an average diameter less than about 500 nm. The particles are produced from nanocrystalline vanadium oxide particles. Silver vanadium oxide particles, for example, can be formed by the heat treatment of a mixture of nanoscale vanadium oxide and a silver compound. Other metal vanadium oxide particles can be produced by similar processes. The metal vanadium oxide particles have very uniform properties.
    Type: Grant
    Filed: January 9, 2001
    Date of Patent: May 25, 2010
    Assignee: Greatbatch Ltd.
    Inventors: Craig R. Horne, Sujeet Kumar, James P. Buckley, Xiangxin Bi
  • Publication number: 20090288601
    Abstract: Light reactive deposition uses an intense light beam to form particles that are directly coated onto a substrate surface. In some embodiments, a coating apparatus comprising a noncircular reactant inlet, optical elements forming a light path, a first substrate, and a motor connected to the apparatus. The reactant inlet defines a reactant stream path. The light path intersects the reactant stream path at a reaction zone with a product stream path continuing from the reaction zone. The substrate intersects the product stream path. Also, operation of the motor moves the first substrate relative to the product stream. Various broad methods are described for using light driven chemical reactions to produce efficiently highly uniform coatings.
    Type: Application
    Filed: July 30, 2009
    Publication date: November 26, 2009
    Inventors: Xiangxin Bi, Ronald J. Mosso, Shivkumar Chiruvolu, Sujeet Kumar, James T. Gardner, Seung M. Lim, William E. McGovern
  • Publication number: 20090255189
    Abstract: A collection of nanoparticles of aluminum oxide have been produced by laser pyrolysis have a very narrow distribution of particle diameters. Preferably, the distribution of particle diameters effectively does not have a tail such that almost no particles have a diameter greater than about 4 times the average diameter. The pyrolysis preferably is performed by generating a molecular stream containing an aluminum precursor, an oxidizing agent and an infrared absorber. The pyrolysis can be performed with an infrared laser such as a CO2 laser.
    Type: Application
    Filed: August 19, 1998
    Publication date: October 15, 2009
    Applicant: NanoGram Corporation
    Inventors: Sujeet Kumar, Hariklia Reitz, Xiangxin Bi, Nobuyuki Kambe
  • Publication number: 20090233098
    Abstract: 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: Application
    Filed: May 26, 2009
    Publication date: September 17, 2009
    Inventors: Nobuyuki Kambe, Xiangxin Bi
  • Patent number: 7575784
    Abstract: Light reactive deposition uses an intense light beam to form particles that are directly coated onto a substrate surface. In preferred embodiments, a coating apparatus comprising a noncircular reactant inlet, optical elements forming a light path, a first substrate, and a motor connected to the apparatus. The reactant inlet defines a reactant stream path. The light path intersects the reactant stream path at a reaction zone with a product stream path continuing from the reaction zone. The substrate intersects the product stream path. Also, operation of the motor moves the first substrate relative to the product stream. Various broad methods are described for using light driven chemical reactions to produce efficiently highly uniform coatings.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: August 18, 2009
    Assignee: NanoGram Corporation
    Inventors: Xiangxin Bi, Ronald J. Mosso, Shivkumar Chiruvolu, Sujeet Kumar, James T. Gardner, Seung M. Lim, William E. McGovern
  • Patent number: 7507382
    Abstract: A collection of zinc oxide nanoparticles have been produced by laser pyrolysis. The zinc oxide nanoparticles have average particle diameters of less than about 95 nm and a very narrow particle size distribution. The laser pyrolysis process is characterized by the production of a reactant stream within the reaction chamber, where the reactant stream includes a zinc precursor and other reactants. The zinc precursor can be delivered as an aerosol.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: March 24, 2009
    Assignee: NanoGram Corporation
    Inventors: Hariklia Dris Reitz, Sujeet Kumar, Xiangxin Bi, Nobuyuki Kambe, Ronald J. Mosso, James T. Gardner
  • Publication number: 20090075083
    Abstract: 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: Application
    Filed: May 13, 2008
    Publication date: March 19, 2009
    Inventors: 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
  • Patent number: 7423512
    Abstract: A collection of zinc oxide nanoparticles have been produced by laser pyrolysis. The zinc oxide nanoparticles have average particle diameters of less than about 95 nm and a very narrow particle size distribution. The laser pyrolysis process is characterized by the production of a reactant stream within the reaction chamber, where the reactant stream includes a zinc precursor and other reactants. The zinc precursor can be delivered as an aerosol.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: September 9, 2008
    Assignee: NanoGram Corporation
    Inventors: Hariklia Dris Reitz, Sujeet Kumar, Xiangxin Bi, Nobuyuki Kambe