IP Library Granted Patent US 6,569,981
Granted Patent Utility PCT National Stage
US 6,569,981 · Confirmation No. 6428

CRYSTALLISING POLYETHER POLYOLS, A METHOD FOR PRODUCING THEM AND USE OF THE SAME

Patented Case View Patent ↗
⬇ PDF
Code Description Pages PDF
2006-11-21 EBCC.AD Notice of Change of Address Place in File Wrapper Due to Electronic Business Center(EBC) Customer Number Update 1 View
2006-06-07 EBCC.AD Notice of Change of Address Place in File Wrapper Due to Electronic Business Center(EBC) Customer Number Update 1 View
2001-10-25 LET. Miscellaneous Incoming Letter 26 View
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this application's details
Quick Facts
Patent No.
US 6,569,981
App. No.
10/030,489
Filed
2001-10-25
Granted
2003-05-27
Art Unit
1711
PTA
0 days