IP Library › Granted Patent US 6,458,969
Granted Patent Utility
US 6,458,969 · Confirmation No. 9809

PROCESS FOR THE PURIFICATION OF ALKYLENE CARBONATE

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 Code Description Pages PDF
2002-03-29 TRNA Transmittal of New Application 3 View
2002-03-29 DRW Drawings-only black and white line drawings 2 View
2002-02-08 TRNA Transmittal of New Application 3 View
2002-02-08 A.PE Preliminary Amendment 2 View
2002-02-08 SPEC Specification 20 View
2002-02-08 CLM Claims 10 View
2002-02-08 ABST Abstract 1 View
2002-02-08 OATH Oath or Declaration filed 3 View
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Quick Facts
Patent No.
US 6,458,969
App. No.
10/071,169
Filed
2002-03-29
Effective Filing
2002-02-08
Granted
2002-10-01
Pub. No.
US20020147349A1
Art Unit
1626
PTA
0 days