Method for operating a hydrogen test leak unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 5, 2010
Grant Date -
Nov 15, 2007
app pub date -
Oct 30, 2004
filing date -
Nov 13, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
For operating a hydrogen test leak unit including a chamber defined by a membrane, a test gas mixture of hydrogen and an added gas is used. The added gas has a permeation coefficient relative to the material of the membrane ranging between 50% and 200% of that of hydrogen. In this manner, demixing of the test gas mixture is limited and significant concentration variations in the chamber are prevented. Preferably, helium is used as added gas.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully