Patents by Inventor Rongsheng Liu

Rongsheng Liu 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).

  • Publication number: 20200411208
    Abstract: The present disclosure relates to a high-voltage (HV) bushing comprising a condenser core configured for surrounding a HV electrical conductor. The condenser core comprises an insulation material comprising wound layers of a permeable solid material impregnated with a thermo-reversible gel. The gel comprises an oil and a thickener, the oil comprising iso-paraffinic oil in an amount within the range of 0.1-100 wt % of the oil and the thickener comprising at least one copolymer in an amount within the range of 0.1-10 wt % of the gel.
    Type: Application
    Filed: March 14, 2019
    Publication date: December 31, 2020
    Inventors: Rongsheng Liu, Gerhard Brosig, Santanu Singha, Sung-Woo Cho, Johan Nyberg
  • Publication number: 20160049218
    Abstract: A transmission system includes an electrical conductor and an insulation layer circumferentially covering the conductor. The layer includes at least two layer sections including a plurality of sublayers concentrically orientated, whereby each sublayer comprises one or more strips arranged beside each other in a circumferential direction. Gaps are formed between adjacent edges of strips and each gap is covered by a strip of an adjacent sublayer. Each of the strips includes one or more sheets arranged beside each other in a radial direction. Each sheet includes an insulation material including cellulose paper and polymer. At least one sublayer includes at least one sheet of said cellulose paper, and at least one sublayer including at least one sheet of said polymer, and whereby the insulation layer is impregnated.
    Type: Application
    Filed: April 5, 2013
    Publication date: February 18, 2016
    Applicant: ABB TECHNOLOGY LTD
    Inventors: Rongsheng LIU, Ola HANSSON, Vijaya CHANDRAMOULI, Katarina WIGGINTON
  • Patent number: 9129721
    Abstract: A direct current transmission system and a method for preparation including an electrical conductor layer, an inner semiconductive layer covering the conductor layer, an insulation layer provided on the semi-conductive layer including laminated polymer material and impregnated with a high viscosity fluid, and including an inner part, a middle part, an outer part, and an outer semi-conductive layer covering the insulation layer. The inner part has a first thickness, the middle part has a second thickness and the outer part has a third thickness, whereby the second thickness is greater than the first thickness and greater than the third thickness. The laminated polymer material within each part has a constant thickness and constant ratio of polymer to laminated material and wherein at least one of the parts has a thickness ratio of less than 35%.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: September 8, 2015
    Assignee: ABB Research Ltd.
    Inventor: Rongsheng Liu
  • Publication number: 20140251654
    Abstract: A direct current transmission system and a method for preparation including an electrical conductor layer, an inner semiconductive layer covering the conductor layer, an insulation layer provided on the semi-conductive layer including laminated polymer material and impregnated with a high viscosity fluid, and including an inner part, a middle part, an outer part, and an outer semi-conductive layer covering the insulation layer. The inner part has a first thickness, the middle part has a second thickness and the outer part has a third thickness, whereby the second thickness is greater than the first thickness and greater than the third thickness. The laminated polymer material within each part has a constant thickness and constant ratio of polymer to laminated material and wherein at least one of the parts has a thickness ratio of less than 35%.
    Type: Application
    Filed: May 20, 2014
    Publication date: September 11, 2014
    Inventor: Rongsheng Liu
  • Patent number: 8596538
    Abstract: An exemplary barcode decoding chip includes a scan module, a boundary identification module, a direction identification module, a bar space boundary processing module, a symbol parameter identification module, a symbol character extraction module, and a decoding module.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: December 3, 2013
    Assignee: Fujian Newland Computer Co., Ltd.
    Inventors: Yali Sun, Dong Guo, Rongsheng Liu, Xianfu Wang, Lunyu Hu, Wenchuan Chen, Qiang Cai, Xiaodan Cai, Qingcai Zhang, Chunguang Zheng, Yousen Qiu, Zhilong Lin, Guoliang Zhuang, Zhiyu Wu
  • Patent number: 8550352
    Abstract: An exemplary QR barcode decoding chip includes a characteristic searching unit configured for searching for a characteristic pattern in the barcode image to determine pixel coordinates of the characteristic pattern; a barcode parameter acquiring unit configured for acquiring a barcode parameter according to the pixel coordinates of the characteristic pattern; a version/format parameter acquiring unit configured for acquiring a version/format parameter; a correction characteristic acquiring unit configured for searching for a characteristic position in the barcode image and acquiring a correction characteristic according to the characteristic position; a module information processing unit configured for calculating a grayscale value corresponding to a module according to the version/format parameter, the barcode parameter and the correction characteristic; a binarizing unit configured for binarizing the module; a codeword extracting unit configured for extracting a codeword according to the binarized module; a
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: October 8, 2013
    Assignee: Fujian Newland Computer Co., Ltd.
    Inventors: Dong Guo, Rongsheng Liu, Xianfu Wang, Fusheng Lan
  • Patent number: 8178780
    Abstract: An electric insulation material for an electric device includes one or several electrical conductors and an electric insulation material arranged around the conductor or between the conductors, which insulation material is impregnated with a dielectric insulation liquid. The electric insulation material includes a main layer that is provided with a surface layer that has a dielectric constant that is lower than the dielectric constant of the main layer.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: May 15, 2012
    Assignee: ABB Research Ltd.
    Inventors: Olof Hjortstam, Rongsheng Liu, Albert Jaksts, Gunilla Eken, legal representative, Leif A. Pettersson
  • Publication number: 20110290877
    Abstract: An exemplary barcode decoding chip includes a scan module, a boundary identification module, a direction identification module, a bar space boundary processing module, a symbol parameter identification module, a symbol character acquisition module, and a decoding module.
    Type: Application
    Filed: May 31, 2011
    Publication date: December 1, 2011
    Applicant: FUJIAN NEWLAND COMPUTER CO., LTD.
    Inventors: Yali Sun, Dong Guo, Rongsheng Liu, Xianfu Wang, Lunyu Hu, Wenchuan Chen, Qiang Cai, Xiaodan Cai, Qingcai Zhang, Chunguang Zheng, Yousen Qiu, Zhilong Lin, Guoliang Zhuang, Zhiyu Wu
  • Publication number: 20110290879
    Abstract: An exemplary QR barcode decoding chip includes a characteristic searching unit configured for searching for a characteristic pattern in the barcode image to determine pixel coordinates of the characteristic pattern; a barcode parameter acquiring unit configured for acquiring a barcode parameter according to the pixel coordinates of the characteristic pattern; a version/format parameter acquiring unit configured for acquiring a version/format parameter; a correction characteristic acquiring unit configured for searching for a characteristic position in the barcode image and acquiring a correction characteristic according to the characteristic position; a module information processing unit configured for calculating a grayscale value corresponding to a module according to the version/format parameter, the barcode parameter and the correction characteristic; a binarizing unit configured for binarizing the module; a codeword extracting unit configured for extracting a codeword according to the binarized module; a
    Type: Application
    Filed: May 31, 2011
    Publication date: December 1, 2011
    Applicant: FUJIAN NEWLAND COMPUTER CO., LTD.
    Inventors: Dong Guo, Rongsheng Liu, Xianfu Wang, Fusheng Lan
  • Publication number: 20110030987
    Abstract: An electric insulation material for an electric device includes one or several electrical conductors and an electric insulation material arranged around the conductor or between the conductors, which insulation material is impregnated with a dielectric insulation liquid. The electric insulation material includes a main layer that is provided with a surface layer that has a dielectric constant that is lower than the dielectric constant of the main layer.
    Type: Application
    Filed: June 28, 2010
    Publication date: February 10, 2011
    Inventors: Olof Hjortstam, Rongsheng Liu, Albert Jaksts, Gunilla Eken, Leif A. Pettersson
  • Patent number: 6885273
    Abstract: A distributed air gap material for a induction device in power systems for minimizing fringe losses, mechanical losses and noise in the core The distributed air gap material occupies a selected portion of the core and is formed of a finely divided magnetic material in a matrix of a dielectric material particles. The air gap material has a zone of transition in which the permeability values vary within the air gap material.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: April 26, 2005
    Assignee: ABB AB
    Inventors: Pan Min, Li Ming, Rongsheng Liu, Mikael Dahlgren, Par Holmberg, Gunnar Russberg, Christian Sasse, Svante Söderholm
  • Publication number: 20030030529
    Abstract: A distributed air gap material for a induction device in power systems for minimizing fringe losses, mechanical losses and noise in the core The distributed air gap material occupies a selected portion of the core and is formed of a finely divided magnetic material in a matrix of a dielectric material particles. The air gap material has a zone of transition in which the permeability values vary within the air gap material.
    Type: Application
    Filed: February 14, 2002
    Publication date: February 13, 2003
    Inventors: Pan Min, Li Ming, Rongsheng Liu, Mikael Dahlgren, Par Holmberg, Gunnar Russberg, Christian Sasse, Svante Soderholm