Patents by Inventor Lan Xu

Lan Xu 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: 8236512
    Abstract: The present disclosure relates to methods of developing terpene synthase variants through engineered host cells. Particularly, the disclosure provides methods of developing terpene synthase variants with improved in vivo performance that are useful in the commercial production of terpene products. Further encompassed in the present disclosure are superior terpene synthase variants and host cells comprising such terpene synthase variants.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: August 7, 2012
    Assignee: Amyris, Inc.
    Inventors: Lishan Zhao, Lan Xu, Patrick Westfall, Andrew Main
  • Publication number: 20120196292
    Abstract: The present disclosure relates to the amplification of target nucleic acid sequences for various sequencing and/or identification techniques. The use of these primers, as described herein, allows for the reduction in the amplification of nonspecific hybridization events (such as primer dimerization) while allowing for the amplification of the target nucleic acid sequences.
    Type: Application
    Filed: December 21, 2011
    Publication date: August 2, 2012
    Applicant: LIFE TECHNOLOGIES CORPORATION
    Inventors: Kai Qin LAO, Nan Lan Xu, Neil A. Straus
  • Publication number: 20120196315
    Abstract: The present disclosure relates to methods of developing terpene synthase variants through engineered host cells. Particularly, the disclosure provides methods of developing terpene synthase variants with improved in vivo performance that are useful in the commercial production of terpene products. Further encompassed in the present disclosure are superior terpene synthase variants and host cells comprising such terpene synthase variants.
    Type: Application
    Filed: February 1, 2012
    Publication date: August 2, 2012
    Applicant: AMYRIS, INC.
    Inventors: Lishan Zhao, Lan Xu, Patrick Westfall, Andrew Main
  • Patent number: 7856067
    Abstract: Hierarchical modulation preferably uses a 16-ary quadrature amplitude modulation (QAM) modulator with a convolutional encoder that combine to effectively provide unequal protection to two different segments of streaming input data, with improved power efficiency with the same bandwidth efficiency, by encoding the first segment as coded data as LSBs as the second segment remains uncoded as uncoded MSBs, with the MSBs used for QAM constellation modest reliability interquadrant demodulation and detection, and with the LSBs used for low reliability intraquadrant detection, but with the LSBs subject to convolutional encoding and decoding rendering the LSBs with high reliability detection, such that, the two segments have unequal coding and modulation for providing unequal levels of reliability detection.
    Type: Grant
    Filed: April 4, 2007
    Date of Patent: December 21, 2010
    Assignee: The Aerospace Corporation
    Inventors: Charles C. Wang, Lan Xu, Samuel Lim
  • Publication number: 20090291475
    Abstract: The present disclosure relates to the amplification of target nucleic acid sequences for various sequencing and/or identification techniques. The use of these primers, as described herein, allows for the reduction in the amplification of nonspecific hybridization events (such as primer dimerization) while allowing for the amplification of the target nucleic acid sequences.
    Type: Application
    Filed: April 22, 2009
    Publication date: November 26, 2009
    Inventors: KAI QIN LAO, NAN LAN XU, NEIL A. STRAUS
  • Publication number: 20080247470
    Abstract: Hierarchical modulation preferably uses a 16-ary quadrature amplitude modulation (QAM) modulator with a convolutional encoder that combine to effectively provide unequal protection to two different segments of streaming input data, with improved power efficiency with the same bandwidth efficiency, by encoding the first segment as coded data as LSBs as the second segment remains uncoded as uncoded MSBs, with the MSBs used for QAM constellation modest reliability interquadrant demodulation and detection, and with the LSBs used for low reliability intraquadrant detection, but with the LSBs subject to convolutional encoding and decoding rendering the LSBs with high reliability detection, such that, the two segments have unequal coding and modulation for providing unequal levels of reliability detection.
    Type: Application
    Filed: April 4, 2007
    Publication date: October 9, 2008
    Inventors: Charles C. Wang, Lan Xu, Samuel Lim
  • Patent number: 6301535
    Abstract: A method of optimization of a single-point frontal airbag fire threshold. The relationship of the airbag fire distribution as a function of velocity to the airbag fire-time is characterized through the use of an optimization procedure. The optimization is conducted by abstracting the sensor algorithm and its associated constraints into a simple mathematical formulation. An airbag fire objective function is constructed that integrates the fire-rate and fire-time requirements. The function requires the input of a single acceleration time history, and it produces an output depending on the airbag fire condition. Numerical search of the optimal fire threshold curve is achieved through parameterizing this curve and applying a modified simplex search optimization algorithm that determines the optimal threshold function parameters without computing the complete objective function in the parameter space.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: October 9, 2001
    Assignee: DaimlerChrysler Corporation
    Inventors: Guy S. Nusholtz, Yibing Shi, Lan Xu