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Method of making stripped porous polymer films

Patent
US-6497977-B1
Inventor

STONE CHARLES (CA)

SUMMERS DAVE (CA)

Assignee
BALLARD POWER SYSTEMS (CA)
Country
United States
Dates
  • Priority:
    1999/11/30
  • Grant:
    2002/12/24
Description
This web page summarizes information in PubChem about patent US-6497977-B1. This includes chemicals mentioned, as reported by PubChem contributors, as well as other content, such as title, abstract, and International Patent Classification (IPC) codes. To read more about how this page was constructed, please visit the PubChem patents help page.

1 Abstract

Stripped porous polymer film and a method for making such film from substantially heterogeneous porous polymer film are described. The heterogeneous film has surface characteristics that are different from the characteristics of the interior bulk material, and the method comprises mechanically stripping at least a portion of at least one surface layer from the heterogeneous film. The stripped porous polymer film may be incorporated into composite membranes. Such composite membranes are particularly suitable for incorporation into membrane electrode assemblies for use in electrochemical cells, including electrochemical fuel cells.

2 Full Text

3 Important Dates

3.1 Priority Date

1999/11/30

3.2 Filing Date

1999/11/30

3.3 Publication Date

2002/12/24

3.4 Grant Date

2002/12/24

4 Inventor

STONE CHARLES (CA)

SUMMERS DAVE (CA)

5 Assignee

BALLARD POWER SYSTEMS (CA)

6 Country

United States

7 Linked Chemicals

7.1 PubChem Compounds

7.2 PubChem Substances

8 Patent Family

9 Classification

9.1 IPC

B01D67/00 (inventive)

H01M8/10 (inventive)

9.2 CPC

Y02E60/50

Y10T428/31

H01M8/1067 (inventive)

B01D67/0086 (inventive, first)

H01M8/1081 (inventive)

H01M8/1048 (inventive)

H01M8/106 (inventive)

H01M8/1093 (inventive)

H01M8/1044 (inventive)

Y02P70/50

H01M8/1062 (inventive)

H01M8/1046 (inventive)

10 Citations

11 Cited By

12 Similar Patents

13 Information Sources

  1. Google Patents
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