Dong W Zhang

US Patent:

8623553, Jan 7, 2014

Filed:

Mar 17, 2010

Appl. No.:

12/725872

Inventors:

Dong Zhang - Joplin MO, US
Ernest Ndzebet - Joplin MO, US
Min Qi Yang - Webb City MO, US
Viet Vu - Carl Junction MO, US
Umamaheswari Janakiraman - Webb City MO, US
Mario Destephen - Joplin MO, US

Assignee:

Eaglepicher Technologies, LLC - Joplin MO

International Classification:

H01M 4/58
H01M 4/50
H01M 4/52
H01M 4/54
H01M 4/62

US Classification:

4292317, 429212, 4292181, 429220, 4292314

Abstract:

The present disclosure relates generally to a high capacity cathode material suitable for use in a non-aqueous electrochemical cell that comprises a mixture of at least three different cathode materials, and more specifically a mixture of fluorinated carbon, an oxide of copper and an oxide of manganese. The present disclosure additionally relates to a non-aqueous electrochemical cell comprising such a cathode material and, in particular, to such a non-aqueous electrochemical cell that can deliver a higher capacity than a conventional cell, and/or that possesses an improved end-of-life indication.

US Patent:

20030175588, Sep 18, 2003

Filed:

Mar 14, 2002

Appl. No.:

10/097875

Inventors:

Dong Zhang - Oklahoma City OK, US

International Classification:

H01M004/62
H01M004/50
H01M004/52
H01M004/60
H01M004/66
B05D005/12

US Classification:

429/217000, 429/231300, 429/231100, 429/223000, 429/224000, 429/231600, 429/231200, 429/213000, 429/245000, 429/232000

Abstract:

The present invention provides improved cathode compositions, improved cathodes, methods of producing improved cathodes including the cathode compositions and improved lithium secondary batteries. The cathode compositions of the invention are comprised of a particulate cathode active material, a particulate conductive substance and a binder formed of small fibers that are substantially homogeneously dispersed throughout the cathode composition but which do not encapsulate to any meaningful degree the particulate conductive substance and cathode active materials, so that a lithium secondary battery including the cathode composition has an improved charge-discharge rate capability and improved power and energy densities.

US Patent:

20100221616, Sep 2, 2010

Filed:

Nov 9, 2009

Appl. No.:

12/614667

Inventors:

Jeremy Chi-Han Chang - Webb City MO, US
Ernest Ndzebet - Joplin MO, US
Viet Vu - Carl Junction MO, US
Min Qi Yang - Webb City MO, US
Umamaheswari Janakiraman - Webb City MO, US
Ramanathan Thillaiyan - Joplin MO, US
Dong Zhang - Joplin MO, US
Mario Destephen - Joplin MO, US

Assignee:

EAGLEPICHER TECHNOLOGIES, LLC - Joplin MO

International Classification:

H01M 6/16
H01M 4/00

US Classification:

429332, 429220

Abstract:

The present disclosure relates generally to a high capacity cathode material suitable for use in a non-aqueous electrochemical cell that comprises copper manganese oxide, which may be in amorphous or semi-crystalline form, and optionally fluorinated carbon. The present disclosure additionally relates to a non-aqueous electrochemical cell comprising such a cathode material and, in particular, to such a non-aqueous electrochemical cell that can deliver a higher capacity than conventional cell.

US Patent:

20100310907, Dec 9, 2010

Filed:

Mar 5, 2010

Appl. No.:

12/718743

Inventors:

Greg Miller - Diamond MO, US
William Studyvin - Cherokee KS, US
Michael Parrot - Joplin MO, US
John C. Pugsley - Galena KS, US
Ernest Ndzebet - Joplin MO, US
Min Qi Yang - Webb City MO, US
Viet Vu - Carl Junction MO, US
Jeremy Chi-Han Chang - Webb City MO, US
Ramanathan Thillaiyan - Webb City MO, US
Dong Zhang - Joplin MO, US
Mario Destephen - Joplin MO, US
Umamaheswari Janakiraman - Webb City MO, US

Assignee:

EAGLEPICHER TECHNOLOGIES, LLC - Joplin MO

International Classification:

H01M 10/48

US Classification:

429 90

Abstract:

The present disclosure relates generally to indicating an end of life condition of an electrochemical device, and more particularly to systems and methods for sensing and determining an end of life condition in a cell comprising a high capacity cathode material suitable for use in a non-aqueous electrochemical cell. The high capacity cathode material has an amorphous or semi-crystalline form of copper manganese oxide, and optionally fluorinated carbon. The present disclosure additionally relates to transmitting the determined end of life condition to a user or monitoring device of the cell.

US Patent:

20150042412, Feb 12, 2015

Filed:

Aug 7, 2013

Appl. No.:

13/961861

Inventors:

- San Diego CA, US
Yanjie Sun - Boxborough MA, US
Zhenying Luo - Boxborough MA, US
Zhenqi Chen - Acton MA, US
Calogero D. Presti - San Diego CA, US
Xinwei Wang - Dunstable MA, US
Dong Zhang - Boxborough MA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

H03H 7/48
H01P 5/18

US Classification:

333112

Abstract:

Techniques for efficiently integrating directional coupler circuitry with other circuit elements of an RF front end. In an aspect, one or more inductors of an RF front end filter is incorporated into a first inductor of the directional coupler, and a capacitor is further coupled in parallel with the first inductor. In another aspect, circuitry associated with matching components of the RF front end may further be incorporated into the directional coupler design. Further techniques are provided for coupling directivity tuning elements to a second inductor of the directional coupler to improve the linearity of the coupler over other tuning techniques.