Measuring and testing – With fluid pressure – Porosity or permeability
Reexamination Certificate
2007-10-23
2007-10-23
Williams, Hezron (Department: 2856)
Measuring and testing
With fluid pressure
Porosity or permeability
C073S865800, C073S866000, C429S047000, C429S047000
Reexamination Certificate
active
11127376
ABSTRACT:
The present invention discloses various methods in which a quality of a diffusion media for use in a fuel cell assembly can be qualitatively evaluated. The material constant, an internal contact angle, a ratio of high and low energy pores, and an external contact angle can be calculated for the diffusion media and compared to a predetermined standard to evaluate the quality of the diffusion media.
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General Motors Corporation
Rogers David A.
Williams Hezron
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