Granted Patent
Utility
US 5,646,306 · App. 08/624,338
Process for controlled depolymerization of feed material to produce a product with lower molecular weight
Inventor:
A. Frederick Elsasser
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: Apr 3, 1996
Inventor
A. Frederick Elsasser
Assignee (at issue)
Henkel Limited
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.