Granted Patent
Utility
US 4,517,370 · App. 06/467,742
Process for preparing 2-chlorobenzoxazoles
Inventors:
Johannes Becherer, Klaus Kuhlein, Ulrich Kussmaul
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: Feb 18, 1983
Inventors
Johannes Becherer
Klaus Kuhlein
Ulrich Kussmaul
Assignee (at issue)
Cassella Aktiengesellschaft
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.