stuart.m.kaback@exxonmobil.com wrote:
>
> Fascinating to read in the July 23 issue of the US Official Gazette--that
> species designated for extinction by Vogelgehirn und Freunde, as we read in
> Steve van Dulken's notice--that US 6365687, the Natta et al case from 1954
> that just issued on June 7--has been ordered to be reexamined by the
> Commissioner.
Very Interesting that the 1954 Natta polypropylene case is still
generating new patents. Not following the field anymore, I had thought
that the issuance of the first US patent in the case about ten years ago
settled it. Of course, there are more than a few of us that think that
the real inventor of polypropylene is Alex Zletz, who received the
Canadian patent in the case decades ago. He retired from Amoco several
years ago and to my knowledge still lives in Naperville IL, just a mile
from the BP Amoco Labs.
-- Bob Buntrock
Buntrock Associates, Inc.
(usual disclaimers)
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