Granted Patent
Utility
US 4,311,642 · App. 06/187,864
Recovery of caprolactam from nylon 6 oligomers
Inventors:
Lamberto Crescentini, Webb B. Blackman, Jr., Joseph D. DeCaprio, William B. Fisher, Roy J. Lilley, Jr., John W. Wagner
Patented Case
View Patent ↗
Granted: Jan 19, 1982
Filed: Sep 17, 1980
Inventors
Lamberto Crescentini
Webb B. Blackman, Jr.
Joseph D. DeCaprio
William B. Fisher
Roy J. Lilley, Jr.
John W. Wagner
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.