IP Library › Granted Patent US 5,354,643
Granted Patent Utility
US 5,354,643 · App. 07/920,633

Oligomeric compounds with acid-labile protective groups useful in positive-working radiation-sensitive mixture

Inventors: Ivan Cabrera, Georg Pawlowski
Patented Case View Patent ↗
Granted: Oct 11, 1994 Filed: Jul 28, 1992
Inventors
Ivan Cabrera
Georg Pawlowski
Assignee (at issue)
Hoechst GmbH

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 5,354,643
App. No.
07/920,633
Filed
1992-07-28
Granted
1994-10-11
Kind
A