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Charles Stone
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Vancouver, CA
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Patents Grants
last 30 patents
Information
Patent Grant
Water insoluble additive for improving conductivity of an ion excha...
Patent number
7,601,759
Issue date
Oct 13, 2009
BDF IP Holdings Ltd.
Sean M. MacKinnon
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Grant
Ion-exchange materials with improved ion conductivity
Patent number
6,765,027
Issue date
Jul 20, 2004
Ballard Power Systems Inc.
Steven Holdcroft
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Graft polymeric membranes and ion-exchange membranes formed therefrom
Patent number
6,723,758
Issue date
Apr 20, 2004
Ballard Power Systems Inc.
Charles Stone
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Composite ion exchange membrane for use in a fuel cell
Patent number
6,689,501
Issue date
Feb 10, 2004
Ballard Power Systems Inc.
Charles Stone
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Synthesis of α, β, β-trifluorostyrene via in-s...
Patent number
6,653,515
Issue date
Nov 25, 2003
Ballard Power Systems Inc.
Charles Stone
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method of making stripped porous polymer films
Patent number
6,497,977
Issue date
Dec 24, 2002
Ballard Power Systems Inc.
Charles Stone
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Grant
α,β, β-trifluorostyrene-based composite membranes
Patent number
6,437,011
Issue date
Aug 20, 2002
Ballard Power Systems Inc.
Alfred E. Steck
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Graft polymeric membranes and ion-exchange membranes formed therefrom
Patent number
6,359,019
Issue date
Mar 19, 2002
Ballard Power Systems Inc.
Charles Stone
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
α,β,β-trifluorostyrene-based composite membranes
Patent number
6,258,861
Issue date
Jul 10, 2001
Ballard Power Systems Inc.
Alfred E. Steck
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
.alpha., .beta., .beta.-trifluorostyrene-based composite membranes
Patent number
5,985,942
Issue date
Nov 16, 1999
Ballard Power Systems Inc.
Alfred E. Steck
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Substituted .alpha.,.beta.,.beta.-trifluorostyrene-based composite...
Patent number
5,834,523
Issue date
Nov 10, 1998
Ballard Power Systems, Inc.
Alfred E. Steck
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Trifluorostyrene and substituted trifluorostyrene copolymeric compo...
Patent number
5,773,480
Issue date
Jun 30, 1998
Ballard Power Systems Inc.
Charles Stone
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Substituted trifluorostyrene monomeric compositions
Patent number
5,684,192
Issue date
Nov 4, 1997
Ballard Power Systems, Inc.
Charles Stone
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Substituted trifluorostyrene compositions
Patent number
5,602,185
Issue date
Feb 11, 1997
Ballard Power Systems Inc.
Charles Stone
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Trifluorostyrene and substituted trifluorostyrene copolymeric ion-e...
Patent number
5,498,639
Issue date
Mar 12, 1996
Ballard Power Systems Inc.
Jinzhu Wei
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Trifluorostyrene and substituted trifluorostyrene copolymeric compo...
Patent number
5,422,411
Issue date
Jun 6, 1995
Ballard Power Systems Inc.
Jinzhu Wei
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
Process for preparing graft copolymer membranes
Publication number
20060079594
Publication date
Apr 13, 2006
Charles Stone
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Ion-exchange membrane for an electrochemical fuel cell
Publication number
20050136314
Publication date
Jun 23, 2005
Ballard Power Systems Inc.
Charles Stone
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Water insoluble additive for improving conductivity of an ion excha...
Publication number
20050112439
Publication date
May 26, 2005
Sean M. MacKinnon
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Graft polymeric membranes and ion-exchange membranes formed therefrom
Publication number
20050049319
Publication date
Mar 3, 2005
Ballard Power Systems Inc.
Charles Stone
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Process for preparing graft copolymer membranes
Publication number
20040016693
Publication date
Jan 29, 2004
Ballard Power Systems Inc.
Charles Stone
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Process for preparing graft copolymer membranes
Publication number
20040009305
Publication date
Jan 15, 2004
Ballard Power Systems Inc.
Charles Stone
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Synthesis of alpha, beta, beta-trifluorostyrene via in-situ formati...
Publication number
20030144439
Publication date
Jul 31, 2003
Ballard Power Systems Inc.
Charles Stone
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Ion-exchange materials with improved ion conductivity
Publication number
20030078308
Publication date
Apr 24, 2003
Ballard Power Systems Inc.
Steven Holdcroft
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Composite ion exchange membrane
Publication number
20030059657
Publication date
Mar 27, 2003
Charles Stone
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Alpha, beta, beta-trifluorostyrene-based composite membranes
Publication number
20020161061
Publication date
Oct 31, 2002
Alfred E. Steck
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Graft polymeric membranes and ion-exchange membranes formed therefrom
Publication number
20020137806
Publication date
Sep 26, 2002
Charles Stone
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Stripped porous polymer films and methods of making such films
Publication number
20020056939
Publication date
May 16, 2002
Charles Stone
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Alpha, beta, beta-trifluorostyrene-based composite membranes
Publication number
20010056128
Publication date
Dec 27, 2001
Alfred E. Steck
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL