Granted Patent
Utility
US 5,286,606 · App. 07/996,925
Process for producing a developer having a low metal ion level
Inventors:
M. Dalil Rahman, Dana L. Durham
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: Dec 29, 1992
Inventors
M. Dalil Rahman
Dana L. Durham
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.