IP Library Granted Patent US 6,420,512
Granted Patent Utility
US 6,420,512 · Confirmation No. 4675

EXTRUSION METHOD FOR MAKING POLYCARBONATE

Patented Case View Patent ↗
⬇ PDF
Code Description Pages PDF
2017-06-12 OATH Oath or Declaration filed 5 View
2014-03-17 OATH Oath or Declaration filed 135 View
2001-07-24 TRNA Transmittal of New Application 1 View
2001-07-24 SPEC Specification 25 View
2001-07-24 CLM Claims 10 View
2001-07-24 ABST Abstract 1 View
2001-07-24 OATH Oath or Declaration filed 3 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 6,420,512
App. No.
09/911,439
Filed
2001-07-24
Granted
2002-07-16
Art Unit
1711
PTA
-24 days