Donald E. Simmons
Residential Contractor at Old Concord Rd, Charlotte, NC
License number
North Carolina 46981
Renew Date
Jan 1, 2001
Category
General Contractor
Type
Residential
Address
Address
6401 Old Concord Rd #27, Charlotte, NC 28213
Phone
(704) 599-9041
Professional information
Claims Representative At Social Security Administration
Position:
Claims Representative at Social Security Administration
Location:
Charlotte, North Carolina Area
Industry:
Government Administration
Work:
Social Security Administration
-
Claims Representative
Explosion-Proof Separator For Li-Ion Secondary Batteries
US Patent:
2005003, Feb 10, 2005
Filed:
Jul 22, 2003
Appl. No.:
10/624277
Inventors:
Zhengming Zhang - Charlotte NC, US
Donald Simmons - Charlotte NC, US
Kevin Chambers - Fort Mill SC, US
Pankaj Arora - Charlotte NC, US
Donald Simmons - Charlotte NC, US
Kevin Chambers - Fort Mill SC, US
Pankaj Arora - Charlotte NC, US
International Classification:
H01M002/16
US Classification:
429142000, 429061000, 429248000
Abstract:
A battery separator for a lithium-ion secondary battery is a microporbus membrane with an adjuvant. The microporous membrane is made of a thermoplastic, and has a thickness of 25 μm or less. The adjuvant, in an effective amount, is mixed into the membrane or coated thereon. The adjuvant is a material adapted to reduce or eliminate energy concentrations around the separator. The energy concentration is sufficient to initiate a reaction of the components of the lithium ion secondary battery.
Explosion-Proof Separator For Li-Ion Secondary Batteries
US Patent:
2004008, May 6, 2004
Filed:
Nov 1, 2002
Appl. No.:
10/286544
Inventors:
Zhengming Zhang - Charlotte NC, US
Donald Simmons - Charlotte NC, US
Kevin Chambers - Fort Mill SC, US
Pankaj Arora - Charlotte NC, US
Donald Simmons - Charlotte NC, US
Kevin Chambers - Fort Mill SC, US
Pankaj Arora - Charlotte NC, US
Assignee:
Celgard Inc.
International Classification:
H01M002/16
US Classification:
429/142000, 429/061000, 429/248000, 429/249000
Abstract:
A battery separator for a lithium-ion secondary battery is a microporous membrane with an adjuvant. The microporous membrane is made of a thermoplastic. The adjuvant, in an effective amount, is mixed into the separator or coated thereon. The adjuvant is a material adapted to reduce or eliminate energy concentrations around the separator. The energy concentration is sufficient to initiate a reaction of the components of the lithium ion secondary battery.
Multilayer Battery Separators
US Patent:
2002013, Sep 26, 2002
Filed:
Mar 27, 2002
Appl. No.:
10/107781
Inventors:
Ronald Call - Rock Hill SC, US
Donald Simmons - Charlotte NC, US
Ta-Hua Yu - Nanuet NY, US
Donald Simmons - Charlotte NC, US
Ta-Hua Yu - Nanuet NY, US
International Classification:
H01M002/16, H01M002/18, B32B027/08
US Classification:
429/144000, 429/145000, 428/516000
Abstract:
A microporous battery separator is provided having a first co-extruded multilayered portion and a second co-extruded multilayered portion. The two portions are bonded together. In a preferred embodiment, the battery separator has two substantially identical multilayered portions bonded together face-to-face. Each of the two multilayered portions has at least one strength layer and at least one shutdown layer. Methods for making the battery separators are also provided. Preferably, a tubular multilayered film is extruded, and collapsed onto itself to form a multilayered battery separator precursor. The precursor is then bonded and annealed before it is stretched to form a microporous multilayer battery separator.
Multilayer Battery Separators
US Patent:
2007020, Sep 6, 2007
Filed:
May 7, 2007
Appl. No.:
11/744930
Inventors:
Ronald Call - Rock Hill SC, US
Donald Simmons - Charlotte NC, US
Ta-Hua Yu - Nanuet NY, US
Donald Simmons - Charlotte NC, US
Ta-Hua Yu - Nanuet NY, US
International Classification:
H01M 2/14
US Classification:
429129000
Abstract:
A microporous battery separator is provided having a first co-extruded multilayered portion and a second co-extruded multilayered portion. The two portions are bonded together. In a preferred embodiment, the battery separator has two substantially identical multilayered portions bonded together face-to-face. Each of the two multilayered portions has at least one strength layer and at least one shutdown layer. Methods for making the battery separators are also provided. Preferably, a tubular multilayered film is extruded, and collapsed onto itself to form a multilayered battery separator precursor. The precursor is then bonded and annealed before it is stretched to form a microporous multilayer battery separator.
Battery Separator With Z-Direction Stability
US Patent:
2006008, Apr 27, 2006
Filed:
Oct 22, 2004
Appl. No.:
10/971310
Inventors:
Pankaj Arora - Charlotte NC, US
Ronald Call - Rock Hill SC, US
Tien Dao - Charlotte NC, US
Khuy Nguyen - Charlotte NC, US
Donald Simmons - Charlotte NC, US
Zhengming Zhang - Charlotte NC, US
Ronald Call - Rock Hill SC, US
Tien Dao - Charlotte NC, US
Khuy Nguyen - Charlotte NC, US
Donald Simmons - Charlotte NC, US
Zhengming Zhang - Charlotte NC, US
International Classification:
H01M 2/16
US Classification:
429247000, 429251000, 429254000
Abstract:
A battery separator is a microporous membrane. The membrane has a major volume of a thermoplastic polymer and a minor volume of an inert particulate filler. The filler is dispersed throughout the polymer. The membrane exhibits a maximum Z-direction compression of 95% of the original membrane thickness. Alternatively, the battery separator is a microporous membrane having a TMA compression curve with a first substantially horizontal slope between ambient temperature and 125° C., a second substantially horizontal slope at greater than 225° C. The curve of the first slope has a lower % compression than the curve of the second slope. The curve of the second slope is not less than 5% compression. The TMA compression curve is graphed so that the Y-axis represents % compression from original thickness and the X-axis represents temperature.
Battery Separator With Z-Direction Stability
US Patent:
7790320, Sep 7, 2010
Filed:
Jan 2, 2007
Appl. No.:
11/619002
Inventors:
Pankaj Arora - Charlotte NC, US
Ronald W. Call - Rock Hill SC, US
Tien Dao - Charlotte NC, US
Khuy V. Nguyen - Charlotte NC, US
Donald K. Simmons - Charlotte NC, US
Zhengming Zhang - Charlotte NC, US
Ronald W. Call - Rock Hill SC, US
Tien Dao - Charlotte NC, US
Khuy V. Nguyen - Charlotte NC, US
Donald K. Simmons - Charlotte NC, US
Zhengming Zhang - Charlotte NC, US
Assignee:
Celgard LLC - Charlotte NC
International Classification:
H01M 2/16, H01M 2/14
US Classification:
429247, 429129, 429248, 429249, 429251
Abstract:
A battery separator is a microporous membrane. The membrane has a major volume of a thermoplastic polymer and a minor volume of an inert particulate filler. The filler is dispersed throughout the polymer. The membrane exhibits a maximum Z-direction compression of 95% of the original membrane thickness. Alternatively, the battery separator is a microporous membrane having a TMA compression curve with a first substantially horizontal slope between ambient temperature and 125° C. , a second substantially horizontal slope at greater than 225° C. The curve of the first slope has a lower % compression than the curve of the second slope. The curve of the second slope is not less than 5% compression. The TMA compression curve is graphed so that the Y-axis represents % compression from original thickness and the X-axis represents temperature.
Method Of Making A Composite Microporous Membrane
US Patent:
2005020, Sep 15, 2005
Filed:
Mar 9, 2004
Appl. No.:
10/796473
Inventors:
Khuy Nguyen - Charlotte NC, US
Donald Simmons - Charlotte NC, US
Kevin Chambers - Fort Mill SC, US
Joe Montagnino - Charlotte NC, US
Richard Ford - Charlotte NC, US
Donald Simmons - Charlotte NC, US
Kevin Chambers - Fort Mill SC, US
Joe Montagnino - Charlotte NC, US
Richard Ford - Charlotte NC, US
International Classification:
B05D003/12
US Classification:
427171000, 427402000
Abstract:
A method of making a composite microporous membrane includes the steps of: coating a nonporous precursor film with a polymer composition, and then stretching the coated nonporous precursor. Stretching includes a first stretching conducted at a first temperature and a first stretching rate and a second stretching conducted at a second temperature and a second stretching rate. The first stretching rate and the second stretching rate are different.
Diffusion Membrane
US Patent:
2003010, Jun 5, 2003
Filed:
Dec 3, 2001
Appl. No.:
10/005846
Inventors:
Khuy Nguyen - Charlotte NC, US
Donald Simmons - Charlotte NC, US
Ronald Call - Rock Hill SC, US
Shawn Hux - Gastonia NC, US
Donald Simmons - Charlotte NC, US
Ronald Call - Rock Hill SC, US
Shawn Hux - Gastonia NC, US
Assignee:
Celgard Inc.
International Classification:
B32B003/26
US Classification:
428/523000, 428/304400, 428/515000
Abstract:
A diffusion membrane is a microporous sheet comprising a blend of an aliphatic polyolefin and a thermoplastic olefin (TPO) elastomer. The blend comprises less than 10 percent by weight of the elastomer. The preferred polyolefins are selected from a group consisting of polyethylene, polypropylene, copolymers thereof, and blends thereof. The preferred TPO elastomers are selected from the group consisting of ethylene-propylene rubbers (EPR), ethylene-propylene-diene terpolymer rubbers (EPDM), and combinations thereof.
Battery Separator
US Patent:
6921608, Jul 26, 2005
Filed:
Aug 21, 2002
Appl. No.:
10/225018
Inventors:
Ronald W. Call - Rock Hill SC, US
J. Robert Dees - Charlotte NC, US
Shizuo Ogura - Charlotte NC, US
Donald K. Simmons - Charlotte NC, US
Xiangyun Wei - Charlotte NC, US
J. Robert Dees - Charlotte NC, US
Shizuo Ogura - Charlotte NC, US
Donald K. Simmons - Charlotte NC, US
Xiangyun Wei - Charlotte NC, US
Assignee:
Celgard, Inc. - Charlotte NC
International Classification:
H01M008/00
US Classification:
429129, 429145, 296231
Abstract:
The present invention is directed to a battery separator. The battery separator comprises a microporous film having a first portion and a second portion. The first portion is bonded to the second portion. The bond has a strength greater than 5 g/in. The film has a thickness less than 1. 7 mils, a Gurley of less than 50 sec/10 cc, and a puncture strength of greater than 400 g/mil.