Granted Patent
Utility
US 5,287,637 · App. 07/859,177
Apparatus to dry/heat treat continuous web stock of film
Inventors:
Thuan P. Dixit, Paul T. Louks
Patented Case
View Patent ↗
Granted: Feb 22, 1994
Filed: Mar 27, 1992
Inventors
Thuan P. Dixit
Paul T. Louks
Assignee (at issue)
THE DOW CHEMICAL 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.