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App. No. 12/460,640 · Confirmation No. 1883

METHOD FOR PREPARING NON-METALLOCENE CATALYSTS

Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362 View Patent ↗ View Publication ↗
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Quick Facts
App. No.
12/460,640
Filed
2009-07-22
Granted
2012-04-10
Pub. No.
US20110021344A1
Examiner
QIAN, YUN
Art Unit
1738
PTA
0 days