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Technology Stocks : Ballard Power -world leader zero-emission PEM fuel cells
BLDP 2.155-0.2%Feb 11 3:59 PM EST
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To: Sid Turtlman who wrote (637)4/17/1997 2:11:00 AM
From: Dennis Tham   of 5827
 
"Let me explain that again: It was Ballard that
invented the PEM cells, not D-B, which has
been using them in the NECARs. So D-B has
no inherent PEM technology of its own to
donate to Ballard."

I don't think the above statement is quite true.

According to IBM patent search you once
recommended some time ago, There are four
patents related to PEM fuel cells I managed to
find on the site, three of them joinly owned by
both Ballard and Daimler-Benz.

5547776
Electrochemical fuel cell stack with
concurrently flowing coolant and
oxidant streams
5521018
Embossed fluid flow field plate for
electrochemical fuel cells
5434016
Process and apparatus for supplying
air to a fuel cell system
5432020
Process and apparatus for humidifying
process gas for operating fuel cell
systems

Also, fuel cell was first invented by
William Robert Grove in 1839.
Ballard only claimed that they are
the world leader in the development
of proton exchange membrane fuel cells.
To my limited understanding of the
technology. Ballard made significant
improvement in the technology.
Ballard's leadership would be their
improvement of the membrane which
gives their fuel cells a very high
power density 28 kw/ft^3.
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