Granted Patent
Utility
US 4,424,372 · App. 06/419,655
4-Substituted phenyl 4'-(5-N-alkyl-1,3-dioxan-2-yl) thiobenzoates
Inventor:
Ying Yen Hsu
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Sep 20, 1982
Inventor
Ying Yen Hsu
Assignee (at issue)
Timex Corporation
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.