Patents by Inventor Xiaoxi Wu

Xiaoxi Wu 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: 11932553
    Abstract: Condensable metal halide materials, such as but not limited to tungsten hexachloride and tungsten pentachloride can be used deposit films metal or metal containing films in a chemical vapor deposition (CVD) or atomic layer deposition process. Described herein are high purity tungsten hexachloride and tungsten pentachloride systems and methods to purify tungsten hexachloride and tungsten pentachloride raw materials. There is provided a purified tungsten hexachloride and tungsten pentachloride containing less than 10 ppm, preferably less than 5 ppm, more preferably less than 1 ppm, and most preferably less than 0.5 ppm of iron and/or molybdenum; and less than 10 ppm, preferably less than 5 ppm of all other trace metals combined including but not limited to aluminum, potassium and sodium.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: March 19, 2024
    Assignee: Versum Materials US, LLC
    Inventors: Xiaoxi Wu, Sergei V. Ivanov, Neil Osterwalder
  • Publication number: 20200189928
    Abstract: Condensable metal halide materials, such as but not limited to tungsten hexachloride and tungsten pentachloride can be used deposit films metal or metal containing films in a chemical vapor deposition (CVD) or atomic layer deposition process. Described herein are high purity tungsten hexachloride and tungsten pentachloride systems and methods to purify tungsten hexachloride and tungsten pentachloride raw materials. There is provided a purified tungsten hexachloride and tungsten pentachloride containing less than 10 ppm, preferably less than 5 ppm, more preferably less than 1 ppm, and most preferably less than 0.5 ppm of iron and/or molybdenum; and less than 10 ppm, preferably less than 5 ppm of all other trace metals combined including but not limited to aluminum, potassium and sodium.
    Type: Application
    Filed: December 11, 2019
    Publication date: June 18, 2020
    Applicant: Versum Materials US, LLC
    Inventors: Xiaoxi Wu, Sergei V. Ivanov, Neil Osterwalder
  • Publication number: 20190024029
    Abstract: Certain embodiments and aspects relate to a photobioreactor including encapsulating photobioreactor units (EPU) within which a liquid medium and a gas are encapsulated. The liquid medium comprises at least one species of phototrophic or mixotrophic organism therein. The gas comprises a high concentration of carbon dioxide. Certain methods of using the EPUs for algal biomass production use automated function units.
    Type: Application
    Filed: September 25, 2018
    Publication date: January 24, 2019
    Inventor: Xiaoxi Wu
  • Patent number: 10125340
    Abstract: Certain embodiments and aspects relate to a photobioreactor including encapsulating photobioreactor units (EPU) within which a liquid medium and a gas are encapsulated. The liquid medium comprises at least one species of phototrophic or mixotrophic organism therein. The gas comprises a high concentration of carbon dioxide. Certain methods of using the EPUs for algal biomass production use automated function units.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: November 13, 2018
    Inventor: Xiaoxi Wu
  • Patent number: 10100406
    Abstract: Condensable metal halide materials, such as but not limited to tungsten chloride (WCl6), can be used to deposit metal films or metal containing films in a chemical vapor deposition (CVD) or atomic layer deposition process. Described herein are high purity compositions comprising condensable materials and methods to purify condensable materials. In one aspect, there is provided a composition comprising: tungsten hexachloride which is substantially free of at least one impurity and wherein the tungsten hexachloride comprises at least 90%, preferably 95% and more preferably 99% by weight or greater of a ?-WCl6 and 5% by weight or less of the ?-WCl6 as measured by X-ray diffraction.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: October 16, 2018
    Assignee: VERSUM MATERIALS US, LLC
    Inventors: Xiaoxi Wu, Sergei Vladimirovich Ivanov
  • Publication number: 20170044478
    Abstract: A system for growing an algal culture to create a biomass includes a plurality of linearly interconnected, sloped-gradient, gravity-driven, raceway ponds. Surface areas of the ponds are sequentially increased in accordance with a multiplier, with the pond surface area of the last raceway pond in the sequence being as large as fifty acres. For the present invention, a fluid transfer system connects each raceway pond with every other raceway pond in the system. Control over each individual raceway pond is provided to monitor and evaluate algal culture in the pond. Based on this evaluation, the fluid transfer system is activated to provide water, nutrients and other additives to maintain predetermined growth parameters for algae in each of the raceway ponds.
    Type: Application
    Filed: September 7, 2016
    Publication date: February 16, 2017
    Inventors: Kevin W. Downey, Kenneth R. Liberty, David A. Hazlebeck, Xiaoxi Wu
  • Publication number: 20160305020
    Abstract: Condensable metal halide materials, such as but not limited to tungsten chloride (WCl6), can be used deposit films metal or metal containing films in a chemical vapor deposition (CVD) or atomic layer deposition process. Described herein are high purity compositions comprising condensable materials and methods to purify condensable materials. In one aspect, there is provided a composition comprising: tungsten hexachloride which is substantially free of at least one impurity and wherein the tungsten hexachloride comprises at least 90%, preferably 95% and more preferably 99% by weight or greater of a ?-WCl6 and 5% by weight or less of the ?-WCl6 as measured by X-ray diffraction.
    Type: Application
    Filed: April 12, 2016
    Publication date: October 20, 2016
    Applicant: Air Products and Chemicals, Inc.
    Inventors: Xiaoxi Wu, Sergei Vladimirovich Ivanov
  • Publication number: 20160251608
    Abstract: A device for generating a pulsed flow in a channel containing a circulating algal culture can include a plate that is pivotably mounted on the channel and an activator. A pulsed flow is generated in the channel by first positioning the plate to impede the flow of circulating algal culture and then rotating the plate to a submerged position. The pulsed flow can be employed to counteract the negative effects of bio-fouling on algae cultivation equipment. In another arrangement, a device for generating a pulsed flow in a sloped raceway that is in fluid communication with a sump can include a gate. In different embodiments, the gate can operate as a so-called “pinch gate” or as a so-called “overflow gate.” In another aspect, a variable rate pump, such as a centrifugal pump, a screw pump or an airlift pump, is described for establishing a pulsed flow in a channel.
    Type: Application
    Filed: May 9, 2016
    Publication date: September 1, 2016
    Inventors: David A. Hazlebeck, Jiping Zhang, Kevin W. Downey, Xiaoxi Wu
  • Publication number: 20160010044
    Abstract: Certain embodiments and aspects relate to a photobioreactor including encapsulating photobioreactor units (EPU) within which a liquid medium and a gas are encapsulated. The liquid medium comprises at least one species of phototrophic or mixotrophic organism therein. The gas comprises a high concentration of carbon dioxide. Certain methods of using the EPUs for algal biomass production use automated function units.
    Type: Application
    Filed: July 9, 2015
    Publication date: January 14, 2016
    Inventor: Xiaoxi Wu
  • Patent number: 8877488
    Abstract: Certain embodiments and aspects of the invention relate to a photobioreactor including covered photobioreactor units through which a liquid medium stream and a gas stream flow. The liquid medium comprises at least one species of phototrophic organism therein. Certain methods of using the photobioreactor system as part of fuel generation system and/or a gas-treatment process or system at least partially remove certain undesirable pollutants from a gas stream. In certain embodiments, a portion of the liquid medium is diverted from a photobioreactor unit and reintroduced upstream of the diversion position.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: November 4, 2014
    Assignee: Algae Systems, LLC
    Inventors: John L. Lewnard, Xiaoxi Wu
  • Publication number: 20140322805
    Abstract: A device for generating a pulsed flow in a channel containing a circulating algal culture can include a plate that is pivotably mounted on the channel and an activator. A pulsed flow is generated in the channel by first positioning the plate to impede the flow of circulating algal culture and then rotating the plate to a submerged position. The pulsed flow can be employed to counteract the negative effects of bio-fouling on algae cultivation equipment. In another arrangement, a device for generating a pulsed flow in a sloped raceway that is in fluid communication with a sump can include a gate. In different embodiments, the gate can operate as a so-called “pinch gate” or as a so-called “overflow gate.” In another aspect, a variable rate pump, such as a centrifugal pump, a screw pump or an airlift pump, is described for establishing a pulsed flow in a channel.
    Type: Application
    Filed: May 6, 2014
    Publication date: October 30, 2014
    Applicant: GENERAL ATOMICS
    Inventors: David A. Hazlebeck, Jiping Zhang, Kevin W. Downey, Xiaoxi Wu
  • Publication number: 20140248601
    Abstract: A method and system are provided for supporting the growth of algae cells. Initially, an inoculum of algae cells are grown in a closed bioreactor. Thereafter, the inoculum is passed into an open Expanding Plug Flow Reactor (EPFR). Growth medium is added at a plurality of locations along the EPFR. This addition is controlled in response to the growth rate of the algae cells to maintain a substantially same concentration of cells at each location in the EPFR. At all times, the medium provides sufficient nutrients to support growth and maintain a high concentration of algae cells, i.e., at least 0.5 grams per liter of medium, in the EPFR. After the desired level of growth is reached, the algae cells are transferred from the EPFR to a standard plug flow reactor wherein oil production is activated in the algae cells.
    Type: Application
    Filed: April 18, 2014
    Publication date: September 4, 2014
    Applicant: General Atomics
    Inventors: David A. Hazlebeck, Xiaoxi Wu
  • Patent number: 8748162
    Abstract: A system and method for using a pulse flow to circulate algae in an algae cultivation apparatus are provided. In order to counteract the negative effects of biofouling on algae cultivation equipment, a pulse flow is created to periodically move through an algae cultivation apparatus. The pulse flow will dislodge algae cells adhering to various surfaces of the apparatus, and it will also create turbulence to stir up any algae cells which may have settled onto the bottom of the apparatus. To produce an increased fluid flow rate required to create an effective pulse flow, a sump, which is periodically filled with drawn algal culture from the apparatus, is located at an elevated position above the apparatus. When released, the algal culture travels through a transfer pipe and into the apparatus with gravity causing the algal culture to flow at a very high rate.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: June 10, 2014
    Assignee: General Atomics
    Inventors: David A. Hazlebeck, Jiping Zhang, Xiaoxi Wu
  • Publication number: 20140030796
    Abstract: A system and method for using a pulse flow to circulate algae in an algae cultivation apparatus are provided. In order to counteract the negative effects of biofouling on algae cultivation equipment, a pulse flow is created to periodically move through an algae cultivation apparatus. The pulse flow will dislodge algae cells adhering to various surfaces of the apparatus, and it will also create turbulence to stir up any algae cells which may have settled onto the bottom of the apparatus. To produce an increased fluid flow rate required to create an effective pulse flow, a sump, which is periodically filled with drawn algal culture from the apparatus, is located at an elevated position above the apparatus. When released, the algal culture travels through a transfer pipe and into the apparatus with gravity causing the algal culture to flow at a very high rate.
    Type: Application
    Filed: August 22, 2013
    Publication date: January 30, 2014
    Applicant: General Atomics
    Inventors: David A. Hazlebeck, Jiping Zhang, Xiaoxi Wu
  • Publication number: 20130330810
    Abstract: Certain embodiments and aspects of the invention relate to a photobioreactor including covered photobioreactor units through which a liquid medium stream and a gas stream flow. The liquid medium comprises at least one species of phototrophic organism therein. Certain methods of using the photobioreactor system as part of fuel generation system and/or a gas-treatment process or system at least partially remove certain undesirable pollutants from a gas stream. In certain embodiments, a portion of the liquid medium is diverted from a photobioreactor unit and reintroduced upstream of the diversion position.
    Type: Application
    Filed: August 12, 2013
    Publication date: December 12, 2013
    Applicant: Algae Systems, LLC
    Inventors: John L. Lewnard, Xiaoxi Wu
  • Patent number: 8541225
    Abstract: A system and method for using a pulse flow to circulate algae in an algae cultivation apparatus are provided. In order to counteract the negative effects of biofouling on algae cultivation equipment, a pulse flow is created to periodically move through an algae cultivation apparatus. The pulse flow will dislodge algae cells adhering to various surfaces of the apparatus, and it will also create turbulence to stir up any algae cells which may have settled onto the bottom of the apparatus. To produce an increased fluid flow rate required to create an effective pulse flow, a sump, which is periodically filled with drawn algal culture from the apparatus, is located at an elevated position above the apparatus. When released, the algal culture travels through a transfer pipe and into the apparatus with gravity causing the algal culture to flow at a very high rate.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: September 24, 2013
    Assignee: General Atomics
    Inventors: David A. Hazlebeck, Jiping Zhang, Xiaoxi Wu
  • Patent number: 8507264
    Abstract: Certain embodiments and aspects of the invention relate to a photobioreactor including covered photobioreactor units through which a liquid medium stream and a gas stream flow. The liquid medium comprises at least one species of phototrophic organism therein. Certain methods of using the photobioreactor system as part of fuel generation system and/or a gas-treatment process or system at least partially remove certain undesirable pollutants from a gas stream. In certain embodiments, a portion of the liquid medium is diverted from a photobioreactor unit and reintroduced upstream of the diversion position.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: August 13, 2013
    Assignee: Algae Systems, LLC
    Inventors: John J. Lewnard, Xiaoxi Wu
  • Publication number: 20130029403
    Abstract: A system and method for using a pulse flow to circulate algae in an algae cultivation apparatus are provided. In order to counteract the negative effects of biofouling on algae cultivation equipment, a pulse flow is created to periodically move through an algae cultivation apparatus. The pulse flow will dislodge algae cells adhering to various surfaces of the apparatus, and it will also create turbulence to stir up any algae cells which may have settled onto the bottom of the apparatus. To produce an increased fluid flow rate required to create an effective pulse flow, a sump, which is periodically filled with drawn algal culture from the apparatus, is located at an elevated position above the apparatus. When released, the algal culture travels through a transfer pipe and into the apparatus with gravity causing the algal culture to flow at a very high rate.
    Type: Application
    Filed: July 25, 2011
    Publication date: January 31, 2013
    Inventors: David A. Hazlebeck, Jiping Zhang, Xiaoxi Wu
  • Publication number: 20120100603
    Abstract: Certain embodiments and aspects of the invention relate to a photobioreactor including covered photobioreactor units through which a liquid medium stream and a gas stream flow. The liquid medium comprises at least one species of phototrophic organism therein. Certain methods of using the photobioreactor system as part of fuel generation system and/or a gas-treatment process or system at least partially remove certain undesirable pollutants from a gas stream. In certain embodiments, a portion of the liquid medium is diverted from a photobioreactor unit and reintroduced upstream of the diversion position.
    Type: Application
    Filed: December 6, 2011
    Publication date: April 26, 2012
    Inventors: John J. Lewnard, Xiaoxi Wu
  • Patent number: 8110395
    Abstract: Certain embodiments and aspects of the present invention relate to a photobioreactor including covered photobioreactor units through which a liquid medium stream and a gas stream flow. The liquid medium comprises at least one species of phototrophic organism therein. Certain methods of using the photobioreactor system as part of fuel generation system and/or a gas-treatment process or system at least partially remove certain undesirable pollutants from a gas stream. In certain embodiments, a portion of the liquid medium is diverted from a photobioreactor unit and reintroduced upstream of the diversion position.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: February 7, 2012
    Assignee: Algae Systems, LLC
    Inventors: John J. Lewnard, Xiaoxi Wu