Granted Patent
Utility
US 5,914,213 · App. 08/944,284
Process and composition for generation of acid
Inventors:
Jurgen M. Grasshoff, John Marshall, Richard A. Minns, Socorro M. Ramos, Stephen G. Stroud, Stephen J. Telfer, Haixin Yang, Roger A. Boggs, Eric S. Kolb
Patented Case
View Patent ↗
Granted: Jun 22, 1999
Filed: Oct 6, 1997
Inventors
Jurgen M. Grasshoff
John Marshall
Richard A. Minns
Socorro M. Ramos
Stephen G. Stroud
Stephen J. Telfer
Haixin Yang
Roger A. Boggs
Eric S. Kolb
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.