Granted Patent
Utility
US 5,994,599 · App. 09/089,893
Halogenated ethers containing fluorine and processes for their manufacture
Inventor:
Viacheslav A. Petrov
Patented Case
View Patent ↗
Granted: Nov 30, 1999
Filed: Jun 4, 1998
Inventor
Viacheslav A. Petrov
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.