Patents by Inventor Xin Qian

Xin Qian 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: 20150043753
    Abstract: Systems and methods are provided for noise reduction. An input audio signal is received. A target gain corresponding to a target volume level is determined. One or more increments of gain change are determined to reach the target gain. A first non-zero amplitude in the input audio signal is detected. The first non-zero amplitude is not within a predetermined range of zero amplitude. Upon the detection of the first non-zero amplitude in the input audio signal, the one or more increments of gain change are applied at one or more zero-crossing points of the input audio signal. The input audio signal is within the predetermined range of zero amplitude at the one or more zero-crossing points. An output audio signal is generated.
    Type: Application
    Filed: July 30, 2014
    Publication date: February 12, 2015
    Inventors: Qinwei Gu, Xin Qian
  • Publication number: 20140273093
    Abstract: The present invention describes a method for producing an antibody in Pichia pastoris, such as by fed-batch fermentation. The method may include a strategy of increasing the ethanol concentration to 18-22 g/L and then maintaining the ethanol level at 5-17 g/L to stabilize the cell mass and enhance the production rate of the antibody. The method may also include the addition of 2.0-5.0 g/L of hydroxyurea during the fermentation process to sustain a constant cell density and enhance the whole broth titer of the antibody. The method may further include a respiratory quotient control for monitoring the ethanol profile and to improve the quality of the antibody by, for example, eliminating clipping of the heavy chain.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: BRISTOL-MYERS SQUIBB COMPANY
    Inventors: Zizhuo XING, George S. Campbell, Bruce E. Eagan, Yueming Qian, Xuankuo Xu, Li You, Zhengjian Li, Nan-Xin Qian
  • Publication number: 20140273094
    Abstract: The present invention describes a method for producing an antibody in Pichia pastoris, such as by fed-batch fermentation. The method may include a strategy of increasing the ethanol concentration to 18-22 g/L and then maintaining the ethanol level at 5-17 g/L to stabilize the cell mass and enhance the production rate of the antibody. The method may also include the addition of 2.0-5.0 g/L of hydroxyurea during the fermentation process to sustain a constant cell density and enhance the whole broth titer of the antibody. The method may further include a respiratory quotient control for monitoring the ethanol profile and to improve the quality of the antibody by, for example, eliminating clipping of the heavy chain.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: BRISTOL-MYERS SQUIBB COMPANY
    Inventors: ZIZHUO XING, GEORGE S. CAMPBELL, BRUCE E. EAGAN, YUEMING QIAN, XUANKUO XU, LI YOU, ZHENGJIAN LI, NAN-XIN QIAN
  • Publication number: 20140106405
    Abstract: The present invention describes methods and processes for the production of proteins by animal cell or mammalian cell culture. In one aspect, the methods comprise the growth of cells in a growth factor/protein/peptide free medium. In another aspect, the methods comprise the addition of growth factors during the production phase. The methods sustain a high viability of the cultured cells, and can yield an increased end titer of protein product, and a high quality of protein product.
    Type: Application
    Filed: October 14, 2013
    Publication date: April 17, 2014
    Inventors: Jun Tian, Michael Borys, Zhengjian Li, Nicholas Abuabsi, Angela Au, Nan-xin Qian, Xiao-ping Dai
  • Patent number: 8026241
    Abstract: Therapeutic benzimidazoles and compositions containing them, for the treatment of acute, inflammatory and neuropathic pain, dental pain, general headache, migraine, cluster headache, mixed-vascular and non-vascular syndromes, tension headache, general inflammation, arthritis, rheumatic diseases, osteoarthritis, inflammatory bowel disorders, inflammatory eye disorders, inflammatory or unstable bladder disorders, psoriasis, skin complaints with inflammatory components, chronic inflammatory conditions, inflammatory pain and associated hyperalgesia and allodynia, neuropathic pain and associated hyperalgesia and allodynia, diabetic neuropathy pain, causalgia, sympathetically maintained pain, deafferentation syndromes, asthma, epithelial tissue damage or dysfunction, herpes simplex, disturbances of visceral motility at respiratory, genitourinary, gastrointestinal or vascular regions, wounds, burns, allergic skin reactions, pruritus, vitiligo, general gastrointestinal disorders, gastric ulceration, duodenal ulcers,
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: September 27, 2011
    Assignee: Amgen Inc.
    Inventors: Chenera Balan, Yunxin Bo, Celia Dominguez, Christopher H. Fotsch, Vijay K. Gore, Vu Van Ma, Mark H. Norman, Vassil I. Ognyanov, Yi-xin Qian, Xianghong Wang, Ning Xi, Shimin Xu
  • Patent number: 7582761
    Abstract: Therapeutic benzimidazoles having the general structure: and compositions containing them, for the treatment of acute, inflammatory and neuropathic pain, dental pain, general headache, migraine, cluster headache, mixed-vascular and non-vascular syndromes, tension headache, general inflammation, arthritis, rheumatic diseases, osteoarthritis, inflammatory bowel disorders, inflammatory eye disorders, inflammatory or unstable bladder disorders, psoriasis, skin complaints with inflammatory components, chronic inflammatory conditions, inflammatory pain and associated hyperalgesia and allodynia, neuropathic pain and associated hyperalgesia and allodynia, diabetic neuropathy pain, causalgia, sympathetically maintained pain, deafferentation syndromes, asthma, epithelial tissue damage or dysfunction, herpes simplex, disturbances of visceral motility at respiratory, genitourinary, gastrointestinal or vascular regions, wounds, burns, allergic skin reactions, pruritus, vitiligo, general gastrointestinal disorders, gas
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: September 1, 2009
    Assignee: Amgen Inc.
    Inventors: Chenera Balan, Yunxin Bo, Celia Dominguez, Christopher H. Fotsch, Vijay K. Gore, Vu Van Ma, Mark H. Norman, Vassil I. Ognyanov, Yi-xin Qian, Xianghong Wang, Ning Xi, Shimin Xu
  • Publication number: 20090143575
    Abstract: Therapeutic benzimidazoles and compositions containing them, for the treatment of acute, inflammatory and neuropathic pain, dental pain, general headache, migraine, cluster headache, mixed-vascular and non-vascular syndromes, tension headache, general inflammation, arthritis, rheumatic diseases, osteoarthritis, inflammatory bowel disorders, inflammatory eye disorders, inflammatory or unstable bladder disorders, psoriasis, skin complaints with inflammatory components, chronic inflammatory conditions, inflammatory pain and associated hyperalgesia and allodynia, neuropathic pain and associated hyperalgesia and allodynia, diabetic neuropathy pain, causalgia, sympathetically maintained pain, deafferentation syndromes, asthma, epithelial tissue damage or dysfunction, herpes simplex, disturbances of visceral motility at respiratory, genitourinary, gastrointestinal or vascular regions, wounds, burns, allergic skin reactions, pruritus, vitiligo, general gastrointestinal disorders, gastric ulceration, duodenal ulcers,
    Type: Application
    Filed: February 6, 2009
    Publication date: June 4, 2009
    Inventors: Chenera Balan, Yunxin Bo, Celia Dominguez, Christopher H. Fotsch, Vijay K. Gore, Vu Van Ma, Mark H. Norman, Vassil I. Ognyanov, Yi-xin Qian, Xianghong Wang, Ning Xi, Shimin Xu
  • Publication number: 20040152690
    Abstract: Therapeutic benzimidazoles and compositions containing them, for the treatment of acute, inflammatory and neuropathic pain, dental pain, general headache, migraine, cluster headache, mixed-vascular and non-vascular syndromes, tension headache, general inflammation, arthritis, rheumatic diseases, osteoarthritis, inflammatory bowel disorders, inflammatory eye disorders, inflammatory or unstable bladder disorders, psoriasis, skin complaints with inflammatory components, chronic inflammatory conditions, inflammatory pain and associated hyperalgesia and allodynia, neuropathic pain and associated hyperalgesia and allodynia, diabetic neuropathy pain, causalgia, sympathetically maintained pain, deafferentation syndromes, asthma, epithelial tissue damage or dysfunction, herpes simplex, disturbances of visceral motility at respiratory, genitourinary, gastrointestinal or vascular regions, wounds, bums, allergic skin reactions, pruritus, vitiligo, general gastrointestinal disorders, gastric ulceration, duodenal ulcers, d
    Type: Application
    Filed: October 16, 2003
    Publication date: August 5, 2004
    Applicant: Amgen Inc.
    Inventors: Chenera Balan, Yunxin Bo, Celia Dominguez, Christopher H. Fotsch, Vijay K. Gore, Vu Van Ma, Mark H. Norman, Vassil I. Ognyanov, Yi-Xin Qian, Xianghong Wang, Ning Xi, Shimin Xu