Granted Patent
Utility
US 4,564,690 · App. 06/447,443
Macrocyclic compounds
Inventors:
Iwao Tabushi, Yoshiaki Kobuke
Patented Case
View Patent ↗
Granted: Jan 14, 1986
Filed: Dec 6, 1982
Inventors
Iwao Tabushi
Yoshiaki Kobuke
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.
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.