Granted Patent
Utility
US 6,057,316 · App. 09/307,820
4-aryl-1-oxa-9-thia-cyclopenta[b]fluorenes
Inventors:
Jay E. Wrobel, Zenan Li
Patented Case
View Patent ↗
Granted: May 2, 2000
Filed: May 10, 1999
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.