Granted Patent
Utility
US 4,764,607 · App. 06/945,117
Method for recovering caprolactam
Inventors:
Laszlo J. Balint, Julius Greenburg
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Dec 22, 1986
Inventors
Laszlo J. Balint
Julius Greenburg
Assignee (at issue)
ALLIED CONSULTING, 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.