Patents by Inventor Wei Qi

Wei Qi 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: 8874524
    Abstract: A technique performs a write operation. The technique involves receiving, after a snapshot of a file system is taken, a write instruction to write new data to a particular portion of the file system. The technique further involves includes reading, in response to the write instruction, metadata to determine whether the new data is a first update of the particular portion since the snapshot was taken. The metadata identifies portions of the file system which have changed since the snapshot was taken. The technique further involves, when the new data is a first update of the particular portion since the snapshot was taken, copying the original data from cache memory (i.e., from the file system buffer cache) to snapshot storage (i.e., to a dedicated save area) and, after the original data is copied, updating the original data in the cache memory with the new data.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: October 28, 2014
    Assignee: EMC Corporation
    Inventors: Junping Zhao, Ivan Bassov, Kevin Xu, Gang Xie, Jialin Yang, Wei Qi
  • Patent number: 8859827
    Abstract: Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying an excess molar ratio of acetic acid with an alcohol, such as ethanol, to produce the esterification product. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising the alcohol, in particular ethanol, which may be separated from the crude reaction mixture.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: October 14, 2014
    Assignee: Celanese International Corporation
    Inventors: R. Jay Warner, Wei Qi, Tatiana H. Sonnenberg
  • Patent number: 8853468
    Abstract: Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying, in the vapor phase, acetic acid and an alcohol such as ethanol to produce the esterification product. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising the alcohol, in particular ethanol, which may be separated from the crude reaction mixture.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: October 7, 2014
    Assignee: Celanese International Corporation
    Inventors: R. Jay Warner, Wei Qi, Tatiana H. Sonnenberg
  • Publication number: 20140275640
    Abstract: The process involves esterifying ethanol and acetic acid to produce an esterification product that is in a single phase that is directly reduced, by hydrogenolysis, to produce ethanol. The single phase is not capable of separating. Feeding a single phase feed stream reduces the separation of the esterification product. Hydrogen may be fed to the esterification reactor that operates at a high pressure that is substantially similar to or greater than the hydrogenolysis reactor.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: Tatiana H. Sonnenberg, Wei Qi, R. Jay Warner
  • Patent number: 8829251
    Abstract: Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying, in the liquid phase, acetic acid and an alcohol such as ethanol to produce an esterification product. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising the alcohol, in particular ethanol, which may be separated from the crude reaction mixture.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: September 9, 2014
    Assignee: Celanese International Corporation
    Inventors: R. Jay Warner, Wei Qi, Tatiana H. Sonnenberg
  • Patent number: 8829249
    Abstract: Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying acetic acid and an alcohol such as ethanol to produce an esterification product. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising the alcohol, in particular ethanol, which may be separated from the crude reaction mixture. The crude reaction mixture may be further purified to recover ethanol.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: September 9, 2014
    Assignee: Celanese International Corporation
    Inventors: R. Jay Warner, Wei Qi, Tatiana Sonnenberg
  • Publication number: 20140226546
    Abstract: An apparatus operable in a communication system is described. The apparatus includes means for obtaining a wireless communication device thermal condition input. The apparatus also includes means for adapting a network search algorithm. Adapting a network search algorithm includes adapting a network search algorithm based on the wireless communication device thermal condition input.
    Type: Application
    Filed: February 8, 2013
    Publication date: August 14, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Sudhendra K. Gupta, Wei Qi, Nam Soo Park
  • Patent number: 8802901
    Abstract: Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying acetic acid and an alcohol such as ethanol to produce an esterification product. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising the alcohol, in particular ethanol, which may be separated from the crude reaction mixture. Ethyl acetate from the crude reaction mixture may be recovered as returned to assist in recovering the esterification product.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: August 12, 2014
    Assignee: Celanese International Corporation
    Inventors: R. Jay Warner, Wei Qi, Tatiana Sonnenberg
  • Publication number: 20140189267
    Abstract: Embodiments of the present invention relate to a method, apparatus and computer product for managing memory space. In one aspect of the present invention, there is provided a method for managing memory space that is organized into pages, the pages being divided into a plurality of page sets, each page set being associated with one of a plurality of upper-layer systems, by: performing state monitoring to the plurality of upper-layer systems to assign priorities to the plurality of upper-layer systems; and determining an order of releasing the pages of the memory space based on the priorities of the plurality of upper-layer systems with the page sets as units. Other aspects and embodiments of invention are also disclosed.
    Type: Application
    Filed: December 30, 2013
    Publication date: July 3, 2014
    Applicant: EMC Corporation
    Inventors: Wei Qi, Junping Zhao, Fenghua Hu, Gang Xie, Jialin Yang
  • Patent number: 8748673
    Abstract: Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying acetic acid and an alcohol such as ethanol to produce an esterification product. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising ethyl acetate, ethanol, and at least one alcohol having at least 4 carbon atoms. The ethanol is recovered with a reduced amount of the alcohol having at least 4 carbon atoms.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: June 10, 2014
    Assignee: Celanese International Corporation
    Inventors: R. Jay Warner, Wei Qi, Tatiana Sonnenberg
  • Publication number: 20140152369
    Abstract: The present invention provides a level translator circuit, a driving circuit for driving a high-voltage device and a corresponding method. The driving circuit for driving a high-voltage device comprises: a zener diode whose cathode is connected to a high-voltage power supply voltage and whose anode is connected to a ground potential of a low-voltage domain through a resistor; a high-voltage PMOS transistor whose gate is connected to an anode of the resistor, whose drain is connected to the ground potential of the low-voltage domain, and whose source is operable to supply a ground potential of a high-voltage domain; a level translator operable to convert a first signal in the low-voltage domain as received to a second signal in the high-voltage domain and output the second signal; and a low-voltage driving circuit operable to receive the second signal and adapt the second signal as a third signal which can drive the high-voltage device.
    Type: Application
    Filed: December 4, 2013
    Publication date: June 5, 2014
    Applicant: iWatt Integrated Circuits Technology (Tianjin) Limited
    Inventor: Wei Qi
  • Patent number: 8715953
    Abstract: The invention relates to methods and products associated with analyzing and monitoring heterogeneous populations of sulfated polysaccharides. In particular therapeutic heparin products including low molecular weight heparin products and methods of analyzing and monitoring these products are described.
    Type: Grant
    Filed: November 1, 2013
    Date of Patent: May 6, 2014
    Assignee: Momenta Pharmaceuticals, Inc.
    Inventors: Ganesh Kaundinya, Zachary Shriver, Mallikarjun Sundaram, Yi-wei Qi, Ram Sasisekharan
  • Publication number: 20140066650
    Abstract: A process for producing vinyl acetate in which a secondary reactant stream is obtained from a predehydrating column and reacted in a sidecar reactor to further increase conversion of ethylene, acetic acid, and molecular oxygen and increase production of vinyl acetate.
    Type: Application
    Filed: August 28, 2013
    Publication date: March 6, 2014
    Applicant: Celanese International Corporation
    Inventors: Naveed Aslam, Sayanti Basu, Wei Qi
  • Patent number: 8663155
    Abstract: A device (12) and method are provided for percutaneous transdermal delivery of a potent pharmacologically active agent. The agent is dissolved in water to form an aqueous coating solution having an appropriate viscosity for coating extremely tiny skin piercing elements (10). The coating solution is applied to the skin piercing elements (10) using known coating techniques and then dried. The device (12) is applied to the skin of a living animal (e.g., a human), causing the microprotrusions (10) to pierce the stratum corneum and deliver a therapeutically effect dose of the agent to the animal.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: March 4, 2014
    Assignee: Alza Corporation
    Inventors: Michel J. N. Cormier, Wendy A. Young, Kofi Nyam, Peter E. Daddona, Wei-Qi Lin
  • Publication number: 20140057358
    Abstract: The invention relates to methods and products associated with analyzing and monitoring heterogeneous populations of sulfated polysaccharides. In particular therapeutic heparin products including low molecular weight heparin products and methods of analyzing and monitoring these products are described.
    Type: Application
    Filed: November 1, 2013
    Publication date: February 27, 2014
    Applicant: MOMENTA PHARMACEUTICALS, INC.
    Inventors: Ganesh Kaundinya, Zachary Shriver, Mallikarjun Sundaram, Yi-wei Qi, Ram Sasisekharan
  • Publication number: 20140004856
    Abstract: Out-of-service (OOS) scanning in mobile equipment is disclosed in mobile equipment having two or more modems. The OOS scans are performed for one of the modems. A determination is made that a first status exists in response to detection that one of the OOS scans proved unsuccessful. Another determination is made that a second status exists in response to detecting that one other of the modems is not experiencing an OOS condition. In response to existence of the first status and the second status, information is utilized from the other of the modems to make a determination whether a third status exists. A determination is made, conditioned at least in part on existence of the third status, whether to perform another of the OOS scans.
    Type: Application
    Filed: March 13, 2013
    Publication date: January 2, 2014
    Applicant: QUALCOMM Incorporated
    Inventors: Sudhendra K. Gupta, Wei Qi, Nam Soo Park
  • Publication number: 20130231098
    Abstract: The present disclosure presents methods and apparatuses for managing Multimode System Selection in one or more user equipment in a wireless system. According to some aspects of the present disclosure, such a method may include discovering whether a user equipment (UE) contains at least one 3GPP network subscription and at least one 3GPP2 network subscription, determining whether 3GPP2 network subscription information is stored on a Universal Integrated Circuit Card (UICC) or a nonvolatile memory (NV) associated with the UE where the UE contains at least one 3GPP network subscription and at least one 3GPP2 network subscription, and performing a read operation on one or both of the UICC and NV to obtain one or more Multimode System Selection (MMSS) base files based on the determining.
    Type: Application
    Filed: August 30, 2012
    Publication date: September 5, 2013
    Applicant: QUALCOMM Incorporated
    Inventors: Anisha E. Jonas, Wei Qi
  • Publication number: 20130131398
    Abstract: Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying acetic acid and an alcohol such as ethanol to produce an esterification product. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising ethyl acetate, ethanol, and at least one alcohol having at least 4 carbon atoms. The ethanol is recovered with a reduced amount of the alcohol having at least 4 carbon atoms.
    Type: Application
    Filed: November 18, 2011
    Publication date: May 23, 2013
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: R. Jay Warner, Wei Qi, Tatiana H. Sonnenberg
  • Publication number: 20130131397
    Abstract: Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying, in the liquid phase, acetic acid and an alcohol such as ethanol to produce an esterification product. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising the alcohol, in particular ethanol, which may be separated from the crude reaction mixture.
    Type: Application
    Filed: November 18, 2011
    Publication date: May 23, 2013
    Applicant: Celanese International Corporation
    Inventors: R. Jay Warner, Wei Qi, Tatiana H. Sonnenberg
  • Publication number: 20130131395
    Abstract: Disclosed herein are processes for alcohol production by reducing an esterification product, such as ethyl acetate. The processes comprise esterifying acetic acid and an alcohol such as ethanol to produce an esterification product. The esterification product is reduced with hydrogen in the presence of a catalyst to obtain a crude reaction mixture comprising the alcohol, in particular ethanol, which may be separated from the crude reaction mixture. Ethyl acetate from the crude reaction mixture may be recovered as returned to assist in recovering the esterification product.
    Type: Application
    Filed: November 18, 2011
    Publication date: May 23, 2013
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: R. Jay Warner, Wei Qi, Tatiana Sonnenberg