IP Library Granted Patent US 6,561,891
Granted Patent Utility
US 6,561,891 · Confirmation No. 8176

ELIMINATING AIR POCKETS UNDER A POLISHING PAD

⬇ PDF
Code Description Pages PDF
2006-07-17 EBCC.AD Notice of Change of Address Place in File Wrapper Due to Electronic Business Center(EBC) Customer Number Update 1 View
2001-05-22 TRNA Transmittal of New Application 1 View
2001-05-22 SPEC Specification 7 View
2001-05-22 CLM Claims 2 View
2001-05-22 ABST Abstract 1 View
2001-05-22 DRW Drawings-only black and white line drawings 1 View
2001-05-22 OATH Oath or Declaration filed 2 View
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Quick Facts
Patent No.
US 6,561,891
App. No.
09/862,221
Filed
2001-05-22
Granted
2003-05-13
Pub. No.
US20020002027A1
Art Unit
3723
PTA
0 days