IP Library Granted Patent US 5,228,701
Granted Patent Utility
US 5,228,701 · App. 07/590,582

Flexible graphite articles with an amorphous carbon phase at the surface

Inventors: Ronald Greinke, Ronald A. Howard
Patented Case View Patent ↗
Granted: Jul 20, 1993 Filed: Sep 28, 1990
Inventors
Ronald Greinke
Ronald A. Howard
Assignee (at issue)
UCAR Carbon Technology Corporation

This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.

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 patent's details
Quick Facts
Patent No.
US 5,228,701
App. No.
07/590,582
Filed
1990-09-28
Granted
1993-07-20
Kind
A