IP Library › Granted Patent US 5,919,950
Granted Patent Utility
US 5,919,950 · App. 08/052,212

Squarylium compounds, and processes and intermediates for the synthesis of these compounds

Inventors: Paulina P. Garcia, John Lee, John Marshall, Donald A. McGowan, Anthony J. Puttick, Thomas K. Spencer, Stephen G. Stroud, Stephen J. Telfer, Michael J. Zuraw
Patented Case View Patent ↗
Granted: Jul 6, 1999 Filed: Apr 23, 1993
Inventors
Paulina P. Garcia
John Lee
John Marshall
Donald A. McGowan
Anthony J. Puttick
Thomas K. Spencer
Stephen G. Stroud
Stephen J. Telfer
Michael J. Zuraw
Assignee (at issue)
Polaroid 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.

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Quick Facts
Patent No.
US 5,919,950
App. No.
08/052,212
Filed
1993-04-23
Granted
1999-07-06
Kind
A