Granted Patent
Utility
US 4,895,788 · App. 07/199,315
Water developable lithographic composition
Inventors:
John E. Walls, Frank Pagano
Patented Case
View Patent ↗
Granted: Jan 23, 1990
Filed: May 26, 1988
Inventors
John E. Walls
Frank Pagano
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.