IP Library › Granted Patent US 6,685,821
Granted Patent Utility
US 6,685,821 · Confirmation No. 9150

METHOD AND SYSTEM FOR PRODUCING HIGH-PRESSURE HYDROGEN

Patented Case View Patent ↗ View Publication ↗
⬇ PDF
 Code Description Pages PDF
2020-12-14 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2020-12-14 N570 Communication - Re: Power of Attorney (PTOL-308) 1 View
2020-12-14 SES.LOSS.ELC Notification of loss of entitlement to small entity status via Patent Application Information Retrieval (PAIR) 1 View
2020-10-29 PA.. Power of Attorney 2 View
2020-10-29 N417 Electronic Filing System Acknowledgment Receipt 2 View
2020-10-29 R3.73 Assignee showing of ownership per 37 CFR 3.73 3 View
2001-08-29 TRNA Transmittal of New Application 2 View
2001-08-29 SPEC Specification 16 View
2001-08-29 CLM Claims 4 View
2001-08-29 ABST Abstract 1 View
2001-08-29 DRW Drawings-only black and white line drawings 6 View
2001-08-29 OATH Oath or Declaration filed 7 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 6,685,821
App. No.
09/942,239
Filed
2001-08-29
Granted
2004-02-03
Pub. No.
US20030062268A1
Art Unit
1745
PTA
-6 days