Granted Patent
Utility
US 5,587,449 · App. 08/521,998
Process for the preparation of polyacetal copolymers
Inventors:
Dietrich Fleischer, Michael Hoffmockel, Karl-Friedrich Muck, Gunter Sextro
Patented Case
View Patent ↗
Granted: Dec 24, 1996
Filed: Aug 31, 1995
Inventors
Dietrich Fleischer
Michael Hoffmockel
Karl-Friedrich Muck
Gunter Sextro
Assignee (at issue)
Hoechst GmbH
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.