IP Library › Granted Patent US 4,904,290
Granted Patent Utility
US 4,904,290 · App. 07/251,281

Cobalt based alloys with critical carbon content for making and using in glass fiber production

Inventors: David J. Gaul, Dennis L. McGarry
Patented Case View Patent ↗
Granted: Feb 27, 1990 Filed: Sep 30, 1988
Inventors
David J. Gaul
Dennis L. McGarry
Assignee (at issue)
Owens-Corning Fiberglas Corp.

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 4,904,290
App. No.
07/251,281
Filed
1988-09-30
Granted
1990-02-27
Kind
A