IP Library › Granted Patent US 4,499,197
Granted Patent Utility
US 4,499,197 · App. 06/361,426

Co-gel catalyst manufacture

Inventors: Mark A. Seese, Robert L. Chiang
Patented Case View Patent ↗
Granted: Feb 12, 1985 Filed: Mar 24, 1982
Inventors
Mark A. Seese
Robert L. Chiang
Assignee (at issue)
W. R. Grace & Co.

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 4,499,197
App. No.
06/361,426
Filed
1982-03-24
Granted
1985-02-12
Kind
A