Granted Patent
Utility
US 5,264,243 · App. 07/899,206
Mass cellulose deacidification process
Inventors:
Robert S. Wedinger, Conrad W. Kamienski, Kent N. Smith, George Robert Sandor, A. Revonda Porch, Sharon Bergmann Smith
Patented Case
View Patent ↗
Granted: Nov 23, 1993
Filed: Jun 16, 1992
Inventors
Robert S. Wedinger
Conrad W. Kamienski
Kent N. Smith
George Robert Sandor
A. Revonda Porch
Sharon Bergmann Smith
Assignee (at issue)
FMC 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.