Granted Patent
Utility
US 5,767,294 · App. 08/162,689
Process for the production of trioxane from formaldehyde
Inventors:
Douglas W. Steele, Mahmood Nayyer Azam Jawaid, William Stewart Allen, Norwood E. Thames, Jr., Dwight A. Reck
Patented Case
View Patent ↗
Granted: Jun 16, 1998
Filed: Dec 6, 1993
Inventors
Douglas W. Steele
Mahmood Nayyer Azam Jawaid
William Stewart Allen
Norwood E. Thames, Jr.
Dwight A. Reck
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.