Granted Patent
Utility
US 5,641,830 · App. 08/531,412
Polyoxymethylene with improved resistance to zinc and/or copper ions, process for the production thereof and use thereof
Inventors:
Edwin Nun, Stephanie Schauhoff, Klaus Dorn
Patented Case
View Patent ↗
Granted: Jun 24, 1997
Filed: Sep 21, 1995
Inventors
Edwin Nun
Stephanie Schauhoff
Klaus Dorn
Assignee (at issue)
Degussa AG
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.