Granted Patent
Utility
US 6,284,892 · App. 09/555,519
Method for producing salts of cyclic amidines
Inventors:
Dieter Most, Karlheinz Drauz
Patented Case
View Patent ↗
Granted: Sep 4, 2001
Filed: Jun 7, 2000
Inventors
Dieter Most
Karlheinz Drauz
Assignee (at issue)
Degussa-Huels 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.