Granted Patent
Utility
US 6,573,391 · App. 10/088,812
1,4-Dioxacylcloalkane-2-one and 1,4-dioxacycloalkene-2-one
Inventors:
Marcus Eh, Peter Worner
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Mar 21, 2002
Inventors
Marcus Eh
Peter Worner
Assignee (at issue)
Haarmann & Reimer 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.