Patents by Inventor Hai-feng Zhang

Hai-feng Zhang 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: 11072551
    Abstract: A point-of-use water filtration system having an idle mode and a filtration mode, the water filtration system including a feed water inlet, a pump in fluid communication with the feed water inlet via a feed water line, and a semi-permeable membrane having an upstream side and a downstream side. A first portion of the upstream side is in fluid communication with a membrane inlet and a second portion of the upstream side is in fluid communication with the concentrate outlet, and the downstream side is in fluid communication with a permeate outlet.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: July 27, 2021
    Assignee: A. O. SMITH CORPORATION
    Inventors: Hai-Feng Zhang, David J. Averbeck, Zhaoshan Cheng
  • Patent number: 11072542
    Abstract: A water purification system includes a tank which stores permeate during periods of standby during which impurities can migrate across a filtration membrane, resulting in impure water on the downstream side of the membrane. During an initial portion of a water draw immediately following a period of standby, the impure water on the downstream side of the membrane is used as a motive fluid to force the permeate out of the tank for delivery to the faucet. Permeate is provided on a continuous bases directly from the membrane to the faucet after the tank is depleted of permeate. The system includes a control system and a plurality of valves to recycle the impure water used as a motive fluid to the membrane to produce permeate. At the conclusion of a water draw, the tank is filled with permeate and the system enters a period of standby until the next water draw.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: July 27, 2021
    Assignee: A. O. SMITH CORPORATION
    Inventor: Hai-Feng Zhang
  • Publication number: 20200231465
    Abstract: A water purification system includes a tank which stores permeate during periods of standby during which impurities can migrate across a filtration membrane, resulting in impure water on the downstream side of the membrane. During an initial portion of a water draw immediately following a period of standby, the impure water on the downstream side of the membrane is used as a motive fluid to force the permeate out of the tank for delivery to the faucet. Permeate is provided on a continuous bases directly from the membrane to the faucet after the tank is depleted of permeate. The system includes a control system and a plurality of valves to recycle the impure water used as a motive fluid to the membrane to produce permeate. At the conclusion of a water draw, the tank is filled with permeate and the system enters a period of standby until the next water draw.
    Type: Application
    Filed: January 17, 2019
    Publication date: July 23, 2020
    Inventor: Hai-Feng Zhang
  • Patent number: 10407325
    Abstract: A method for providing a safe and healthy water and water-based product, comprising: testing pretreated reverse osmosis water to determine whether it meets a first set of pre-defined specifications; introducing a pre-defined nutrient composition into the water, wherein the predefined nutrient composition comprising one or more of mineral nutrients, trace elements and nutritional supplements; testing the water to determine whether it meets a second set of predefined specifications; and disinfecting the water along with its container by UV irradiation from a UV light source to obtain a water product.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: September 10, 2019
    Assignee: A. O. SMITH CORPORATION
    Inventor: Hai-Feng Zhang
  • Publication number: 20180162761
    Abstract: A point-of-use water filtration system having an idle mode and a filtration mode, the water filtration system including a feed water inlet, a pump in fluid communication with the feed water inlet via a feed water line, and a semi-permeable membrane having an upstream side and a downstream side. A first portion of the upstream side is in fluid communication with a membrane inlet and a second portion of the upstream side is in fluid communication with the concentrate outlet, and the downstream side is in fluid communication with a permeate outlet.
    Type: Application
    Filed: December 12, 2017
    Publication date: June 14, 2018
    Inventors: Hai-Feng Zhang, David J. Averbeck, Zhaoshan Cheng
  • Publication number: 20170364499
    Abstract: A first set of concealment attributes is received from a first user. The first set of user concealment attributes are associated with a document. A first set of document concealment attributes is received from the user. The first set of document concealment attributes are associated with the document. The document, based on the first set of concealment attributes and the first set of document concealment attributes, is stored.
    Type: Application
    Filed: June 20, 2016
    Publication date: December 21, 2017
    Inventors: Wen Min Dou, Qi Feng Huo, Yu Ji, Kam Sing Kuan, Hua Shao, Jin Jing Xie, Yu Wang, Lin Yuan, Hai Feng Zhang
  • Patent number: 9731971
    Abstract: Disclosed herein is a scaled method for producing substantially aligned carbon nanotubes by depositing onto a continuously moving substrate, (1) a catalyst to initiate and maintain the growth of carbon nanotubes, and (2) a carbon-bearing precursor. Products made from the disclosed method, such as monolayers of substantially aligned carbon nanotubes, and methods of using them are also disclosed.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: August 15, 2017
    Assignee: Multipure International
    Inventors: Christopher H. Cooper, Hai-Feng Zhang, Richard Czerw
  • Publication number: 20170152165
    Abstract: A method for providing a safe and healthy water and water-based product, comprising: testing pretreated reverse osmosis water to determine whether it meets a first set of pre-defined specifications; introducing a pre-defined nutrient composition into the water, wherein the predefined nutrient composition comprising one or more of mineral nutrients, trace elements and nutritional supplements; testing the water to determine whether it meets a second set of predefined specifications; and disinfecting the water along with its container by UV irradiation from a UV light source to obtain a water product.
    Type: Application
    Filed: February 10, 2017
    Publication date: June 1, 2017
    Inventor: Hai-Feng ZHANG
  • Patent number: 9604861
    Abstract: A method for providing a safe and healthy water and water-based product, comprising: testing pretreated reverse osmosis water to determine whether it meets a first set of pre-defined specifications; introducing a pre-defined nutrient composition into the water, wherein the predefined nutrient composition comprising one or more of mineral nutrients, trace elements and nutritional supplements; testing the water to determine whether it meets a second set of pre-defined specifications; and disinfecting the water along with its container by UV irradiation from a UV light source to obtain a water product.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: March 28, 2017
    Assignee: A. O. Smith Corporation
    Inventor: Hai-Feng Zhang
  • Publication number: 20150376011
    Abstract: Disclosed herein is a scaled method for producing substantially aligned carbon nanotubes by depositing onto a continuously moving substrate, (1) a catalyst to initiate and maintain the growth of carbon nanotubes, and (2) a carbon-bearing precursor. Products made from the disclosed method, such as monolayers of substantially aligned carbon nanotubes, and methods of using them are also disclosed.
    Type: Application
    Filed: September 3, 2015
    Publication date: December 31, 2015
    Inventors: Christopher H. Cooper, Hai-Feng Zhang, Richard Czerw
  • Publication number: 20140377410
    Abstract: A method for providing a safe and healthy water and water-based product, comprising: testing pretreated reverse osmosis water to determine whether it meets a first set of pre-defined specifications; introducing a pre-defined nutrient composition into the water, wherein the predefined nutrient composition comprising one or more of mineral nutrients, trace elements and nutritional supplements; testing the water to determine whether it meets a second set of pre-defined specifications; and disinfecting the water along with its container by UV irradiation from a UV light source to obtain a water product.
    Type: Application
    Filed: February 4, 2013
    Publication date: December 25, 2014
    Inventor: Hai-Feng Zhang
  • Publication number: 20140186550
    Abstract: Disclosed herein is a scaled method for producing substantially aligned carbon nanotubes by depositing onto a continuously moving substrate, (1) a catalyst to initiate and maintain the growth of carbon nanotubes, and (2) a carbon-bearing precursor. Products made from the disclosed method, such as monolayers of substantially aligned carbon nanotubes, and methods of using them are also disclosed.
    Type: Application
    Filed: March 13, 2014
    Publication date: July 3, 2014
    Inventors: Christopher H. Cooper, Hai-Feng Zhang, Richard Czerw
  • Patent number: 8750086
    Abstract: A test method includes the steps of providing a test optical disc stored data that is reproduced to display a plurality of images having a plurality of single colors, the plurality of single colors comprising a plurality of first single colors; providing a first timer that begins counting for a first predetermined time when the disc player begins to read the test optical disc; displaying test images according to the video signals generated by the disc player that read the test optical disc. The test method further includes the steps of detecting the color of the test images, determining whether the currently detected color is substantially the same as one of the first single colors after the first timer has timed out; determining that the read performance of the disc player is unsatisfactory if the currently detected color is substantially the same as one of first single colors.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: June 10, 2014
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Xiao-Li Wang, Hai-Feng Zhang, Hung-Lun Chiang, Bing Zhou, Jun Liu, Na Liang
  • Patent number: 8709374
    Abstract: Disclosed herein is a scaled method for producing substantially aligned carbon nanotubes by depositing onto a continuously moving substrate, (1) a catalyst to initiate and maintain the growth of carbon nanotubes, and (2) a carbon-bearing precursor. Products made from the disclosed method, such as monolayers of substantially aligned carbon nanotubes, and methods of using them are also disclosed.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: April 29, 2014
    Assignee: Seldon Technologies, LLC
    Inventors: Christopher H. Cooper, Hai-Feng Zhang, Richard Czerw
  • Publication number: 20140060288
    Abstract: A testing device for testing timbre of a disc player is provided. The testing device may be contained in a computer, or test equipment. The testing device is electronically connected to the disc player for receiving audio signals from the disc player, and analyzing the audio signals to obtain at least one test value for determining the timbre of the disc player. A testing method applied in the testing device is also provided.
    Type: Application
    Filed: August 23, 2013
    Publication date: March 6, 2014
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO.
    Inventors: XIAO-LI WANG, HAI-FENG ZHANG, HUNG-LUN CHIANG, JUN LIU
  • Publication number: 20130329538
    Abstract: A test method includes the steps of providing a test optical disc stored data that is reproduced to display a plurality of images having a plurality of single colors, the plurality of single colors comprising a plurality of first single colors; providing a first timer that begins counting for a first predetermined time when the disc player begins to read the test optical disc; displaying test images according to the video signals generated by the disc player that read the test optical disc. The test method further includes the steps of detecting the color of the test images, determining whether the currently detected color is substantially the same as one of the first single colors after the first timer has timed out; determining that the read performance of the disc player is unsatisfactory if the currently detected color is substantially the same as one of first single colors.
    Type: Application
    Filed: June 7, 2013
    Publication date: December 12, 2013
    Inventors: XIAO-LI WANG, HAI-FENG ZHANG, HUNG-LUN CHIANG, BING ZHOU, JUN LIU, NA LIANG
  • Patent number: 8529862
    Abstract: Methods of preparing single walled carbon nanotubes are provided. An arrangement comprising one or more layers of fullerene in contact with one side of a metal layer and a solid carbon source in contact with the other side of metal layer is prepared. The fullerene/metal layer/solid carbon source arrangement is then heated to a temperature below where the fullerenes sublime. Single walled carbon nanotubes are grown on the fullerene side of the metal layer.
    Type: Grant
    Filed: March 29, 2006
    Date of Patent: September 10, 2013
    Assignee: Hyperion Catalysis International, Inc.
    Inventors: Howard Tennent, Hai-feng Zhang, Jun Ma
  • Publication number: 20120251432
    Abstract: Disclosed herein is a scaled method for producing substantially aligned carbon nanotubes by depositing onto a continuously moving substrate, (1) a catalyst to initiate and maintain the growth of carbon nanotubes, and (2) a carbon-bearing precursor. Products made from the disclosed method, such as monolayers of substantially aligned carbon nanotubes, and methods of using them are also disclosed.
    Type: Application
    Filed: February 6, 2008
    Publication date: October 4, 2012
    Inventors: Christopher H. Cooper, Hai-Feng Zhang, Richard Czerw
  • Patent number: 8090113
    Abstract: A system for modulating audio effects of speakers is provided. The system includes a selecting module, a playing module, a recording module, a time delay computing module and a modulating module. Based on these modules, the system is capable of determining a time difference and a pitch for each of the speakers, and modulating the time difference and the pitch for each of the speakers to a desired time difference and a desired pitch, so as to ensure that simultaneous sounds from each speaker arrive at a microphone at about the same time and with the same audio pitch. A related method is also provided.
    Type: Grant
    Filed: August 21, 2008
    Date of Patent: January 3, 2012
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Ping-Yang Chuang, Yi-Ching Weng, Chun-Hsien Wu, Hai-Feng Zhang, Hai-Tao Liu, Qing-Bo Yuan
  • Patent number: 7947247
    Abstract: Methods of preparing single walled carbon nanotubes are provided. An arrangement comprising one or more layers of fullerene in contact with one side of a metal layer and a solid carbon source in contact with the other side of metal layer is prepared. The fullerene/metal layer/solid carbon source arrangement is then heated to a temperature below where the fullerenes sublime. Alternatively, a non-solid carbon source may be used in place of a solid carbon source or the metal layer may simply be saturated with carbon atoms. A multiplicity of single walled carbon nanotubes are grown on the fullerene side of the metal layer, wherein at least 80% of the single walled carbon nanotubes in said multiplicity have a diameter within ±5% of a single walled carbon nanotube diameter D present in said multiplicity, said diameter D being in the range between 0.6-2.2 nm.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: May 24, 2011
    Assignee: Hyperion Catalysis International, Inc.
    Inventors: Howard Tennent, Hai-feng Zhang, Jun Ma