IP Library Granted Patent US 5,266,255
Granted Patent Utility
US 5,266,255 · App. 07/923,072

Process for high stress spinning of polyester industrial yarn

Inventors: John D. Gibbon, Norman K. Porter
Patented Case View Patent ↗
Granted: Nov 30, 1993 Filed: Jul 31, 1992
Inventors
John D. Gibbon
Norman K. Porter
Assignee (at issue)
Hoechst Celanese 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 5,266,255
App. No.
07/923,072
Filed
1992-07-31
Granted
1993-11-30
Kind
A