Granted Patent
Utility
US 5,207,532 · App. 07/639,022
Process for conditioning material for disposal
Inventors:
John Y. Mason, Randall J. Block, Randall K. Tyler, John D. Milliken
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Jan 9, 1991
Inventors
John Y. Mason
Randall J. Block
Randall K. Tyler
John D. Milliken
Assignees (at issue)
Exxon Chemical Patents, Inc.
Rio Linda Chemical Co., Inc.
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.