IP Library › Patent Application 09920497
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App. No. 09/920,497 · Confirmation No. 7116

PURIFICATION PROCESS

Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362 View Patent ↗ View Publication ↗
⬇ PDF
 Code Description Pages PDF
2001-08-01 TRNA Transmittal of New Application 2 View
2001-08-01 SPEC Specification 12 View
2001-08-01 CLM Claims 4 View
2001-08-01 ABST Abstract 1 View
2001-08-01 DRW Drawings-only black and white line drawings 1 View
2001-08-01 OATH Oath or Declaration filed 3 View
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Quick Facts
App. No.
09/920,497
Filed
2001-08-01
Granted
2003-08-26
Pub. No.
US20020028916A1
Art Unit
1653
PTA
-3 days