Granted Patent
Utility
US 5,994,455 · App. 09/149,795
Process for the preparation of thermally stable polyoxymethylene copolymers
Inventors:
Karl-Friedrich Muck, Horst Roschert, Robert M. Gronner, Satyajit Verma, Michael G. Yearwood
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Sep 8, 1998
Inventors
Karl-Friedrich Muck
Horst Roschert
Robert M. Gronner
Satyajit Verma
Michael G. Yearwood
Assignee (at issue)
Ticonna 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.