Granted Patent
Utility
US 6,340,676 · App. 09/839,788
4-aryl-1-oxa-9-thia-cyclopenta (b) fluorenes
Inventors:
Jay E. Wrobel, Zenan Li
Patented Case
View Patent ↗
Granted: Jan 22, 2002
Filed: Apr 20, 2001
Inventors
Jay E. Wrobel
Zenan Li
Assignee (at issue)
Amerimas Home Products, Inc.
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.