Patents by Inventor James J. Wu

James J. Wu 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: 9048488
    Abstract: Active material for a negative electrode of a rechargeable zinc alkaline electrochemical cell is made with zinc metal particles coated with tin and/or lead. The zinc particles may be coated by adding lead and tin salts to a slurry containing zinc particles, a thickening agent and water. The remaining zinc electrode constituents such as zinc oxide (ZnO), bismuth oxide (Bi2O3), a dispersing agent, and a binding agent such as Teflon are then added. The resulting slurry/paste has a stable viscosity and is easy to work with during manufacture of the zinc electrode. Further, the zinc electrode is much less prone to gassing when cobalt is present in the electrolyte. Cells manufactured from electrodes produced in accordance with this invention exhibit much less hydrogen gassing, by as much as 60-80%, than conventional cells. The cycle life and shelf life of the cells is also enhanced, as the zinc conductive matrix remains intact and shelf discharge is reduced.
    Type: Grant
    Filed: July 10, 2013
    Date of Patent: June 2, 2015
    Assignee: PowerGenix Systems, Inc.
    Inventors: Jeffrey Phillips, Samaresh Mohanta, Cecelia Maske, Deepan Chakkaravarthi Bose, James J. Wu, Bryan L. McKinney
  • Publication number: 20140157586
    Abstract: Active material for a negative electrode of a rechargeable zinc alkaline electrochemical cell is made with zinc metal particles coated with tin and/or lead. The zinc particles may be coated by adding lead and tin salts to a slurry containing zinc particles, a thickening agent and water. The remaining zinc electrode constituents such as zinc oxide (ZnO), bismuth oxide (Bi2O3), a dispersing agent, and a binding agent such as Teflon are then added. The resulting slurry/paste has a stable viscosity and is easy to work with during manufacture of the zinc electrode. Further, the zinc electrode is much less prone to gassing when cobalt is present in the electrolyte. Cells manufactured from electrodes produced in accordance with this invention exhibit much less hydrogen gassing, by as much as 60-80%, than conventional cells. The cycle life and shelf life of the cells is also enhanced, as the zinc conductive matrix remains intact and shelf discharge is reduced.
    Type: Application
    Filed: July 10, 2013
    Publication date: June 12, 2014
    Inventors: Jeffrey Phillips, Samaresh Mohanta, Cecelia Maske, Deepan Chakkaravarthi Bose, James J. Wu, Bryan L. McKinney
  • Patent number: 8501351
    Abstract: Active material for a negative electrode of a rechargeable zinc alkaline electrochemical cell is made with zinc metal particles coated with tin and/or lead. The zinc particles may be coated by adding lead and tin salts to a slurry containing zinc particles, a thickening agent and water. The remaining zinc electrode constituents such as zinc oxide (ZnO), bismuth oxide (Bi2O3), a dispersing agent, and a binding agent such as Teflon are then added. The resulting slurry/paste has a stable viscosity and is easy to work with during manufacture of the zinc electrode. Further, the zinc electrode is much less prone to gassing when cobalt is present in the electrolyte. Cells manufactured from electrodes produced in accordance with this invention exhibit much less hydrogen gassing, by as much as 60-80%, than conventional cells. The cycle life and shelf life of the cells is also enhanced, as the zinc conductive matrix remains intact and shelf discharge is reduced.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: August 6, 2013
    Assignee: PowerGenix Systems, Inc.
    Inventors: Jeffrey Phillips, Samaresh Mohanta, Cecilia Maske, Deepan Chakkaravarthi Bose, James J. Wu, Bryan L. McKinney
  • Patent number: 8369356
    Abstract: Techniques for dynamically managing receiver resources to achieve good latency and throughput performance are described. A receiver may have various types of receiver resources such as demod resources for demodulating packets, decode resources for decoding packets, packet processing resources, etc. These various types of receiver resources may be dynamically assigned to packets. In one design, receiver resource usage by each packet to be processed by the receiver may be estimated. The available receiver resources may be assigned to packets based on the estimated receiver resource usage by each packet and one or more assignment criteria such as priority, latency requirements, etc. The latency of each packet may be determined based on the receiver resource assignment. If the latency requirements of any packet are not met, then receiver processing may be skipped or deferred for one or more packets such that the latency requirements of each packet to be processed can be met.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: February 5, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Ming-Chang Tsai, James J. Wu, Pillappakkam Srinivas, Ric Senior, Vinayak Chowdiah
  • Patent number: 8340003
    Abstract: Systems and methodologies are described that facilitate reliably receiving a sequence of data packets in a wireless communications environment. In particular, mechanisms are provided that enhance hybrid automatic repeat request protocols through validation of acknowledgment message detection by re-decoding. A transmitter sends a data packet from a sequence of packets in one or more data transmissions. A receiver acknowledges the data packet upon obtaining sufficient transmissions to decode the packet. The receiver re-decodes a successive data transmission in combination with previously received transmissions to validate if the transmitter detected the acknowledgment.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: December 25, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Ming-Chang Tsai, James J. Wu
  • Patent number: 8085786
    Abstract: Systems and methodologies are described that facilitate data throughput optimization in a receiver through prioritized decoding of data transmissions. In particular, mechanisms are provided that assign priorities to obtained packets and/or sub-packets of a data transmission. The priorities can be assigned based at least upon prioritization rules that identify packets and/or sub-packets most likely to successfully decode. The obtained packets and/or sub-packets are decoded based upon the assigned priorities.
    Type: Grant
    Filed: January 24, 2008
    Date of Patent: December 27, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Ming-Chang Tsai, James J. Wu
  • Publication number: 20110292811
    Abstract: Systems and methodologies are described that facilitate reliably receiving a sequence of data packets in a wireless communications environment. In particular, mechanisms are provided that enhance hybrid automatic repeat request protocols through validation of acknowledgment message detection by re-decoding. A transmitter sends a data packet from a sequence of packets in one or more data transmissions. A receiver acknowledges the data packet upon obtaining sufficient transmissions to decode the packet. The receiver re-decodes a successive data transmission in combination with previously received transmissions to validate if the transmitter detected the acknowledgment.
    Type: Application
    Filed: June 3, 2011
    Publication date: December 1, 2011
    Applicant: QUALCOMM Incorporated
    Inventors: Ming-Chang Tsai, James J. Wu
  • Patent number: 7978635
    Abstract: Systems and methodologies are described that facilitate reliably receiving a sequence of data packets in a wireless communications environment. In particular, mechanisms are provided that enhance hybrid automatic repeat request protocols through validation of acknowledgment message detection by re-decoding. A transmitter sends a data packet from a sequence of packets in one or more data transmissions. A receiver acknowledges the data packet upon obtaining sufficient transmissions to decode the packet. The receiver re-decodes a successive data transmission in combination with previously received transmissions to validate if the transmitter detected the acknowledgment.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: July 12, 2011
    Assignee: Qualcomm Incorporated
    Inventors: Ming-Chang Tsai, James J. Wu
  • Publication number: 20100291439
    Abstract: Active material for a negative electrode of a rechargeable zinc alkaline electrochemical cell is made with zinc metal particles coated with tin and/or lead. The zinc particles may be coated by adding lead and tin salts to a slurry containing zinc particles, a thickening agent and water. The remaining zinc electrode constituents such as zinc oxide (ZnO), bismuth oxide (Bi2O3), a dispersing agent, and a binding agent such as Teflon are then added. The resulting slurry/paste has a stable viscosity and is easy to work with during manufacture of the zinc electrode. Further, the zinc electrode is much less prone to gassing when cobalt is present in the electrolyte. Cells manufactured from electrodes produced in accordance with this invention exhibit much less hydrogen gassing, by as much as 60-80%, than conventional cells. The cycle life and shelf life of the cells is also enhanced, as the zinc conductive matrix remains intact and shelf discharge is reduced.
    Type: Application
    Filed: May 18, 2009
    Publication date: November 18, 2010
    Applicant: PowerGenix Systems, Inc.
    Inventors: Jeffrey Phillips, Samaresh Mohanta, Cecilia Maske, Deepan Chakkaravarthi Bose, James J. Wu, Bryan L. McKinney
  • Publication number: 20080232400
    Abstract: Techniques for dynamically managing receiver resources to achieve good latency and throughput performance are described. A receiver may have various types of receiver resources such as demod resources for demodulating packets, decode resources for decoding packets, packet processing resources, etc. These various types of receiver resources may be dynamically assigned to packets. In one design, receiver resource usage by each packet to be processed by the receiver may be estimated. The available receiver resources may be assigned to packets based on the estimated receiver resource usage by each packet and one or more assignment criteria such as priority, latency requirements, etc. The latency of each packet may be determined based on the receiver resource assignment. If the latency requirements of any packet are not met, then receiver processing may be skipped or deferred for one or more packets such that the latency requirements of each packet to be processed can be met.
    Type: Application
    Filed: March 5, 2008
    Publication date: September 25, 2008
    Applicant: QUALCOMM Incorporated
    Inventors: Ming-Chang Tsai, James J. Wu, Phillappakkam Srinivas, Ric Senior, Vinayak Chowdiah
  • Publication number: 20080232403
    Abstract: Systems and methodologies are described that facilitate reliably receiving a sequence of data packets in a wireless communications environment. In particular, mechanisms are provided that enhance hybrid automatic repeat request protocols through validation of acknowledgment message detection by re-decoding. A transmitter sends a data packet from a sequence of packets in one or more data transmissions. A receiver acknowledges the data packet upon obtaining sufficient transmissions to decode the packet. The receiver re-decodes a successive data transmission in combination with previously received transmissions to validate if the transmitter detected the acknowledgment.
    Type: Application
    Filed: January 9, 2008
    Publication date: September 25, 2008
    Inventors: Ming-Chang Tsai, James J. Wu
  • Publication number: 20080225825
    Abstract: Systems and methodologies are described that facilitate data throughput optimization in a receiver through prioritized decoding of data transmissions. In particular, mechanisms are provided that assign priorities to obtained packets and/or sub-packets of a data transmission. The priorities can be assigned based at least upon prioritization rules that identify packets and/or sub-packets most likely to successfully decode. The obtained packets and/or sub-packets are decoded based upon the assigned priorities.
    Type: Application
    Filed: January 24, 2008
    Publication date: September 18, 2008
    Applicant: QUALCOMM Incorporated
    Inventors: Ming-Chang Tsai, James J. Wu