Granted Patent
Utility
US 4,514,357 · App. 06/450,039
Production of molded articles having excellent optical characteristics
Inventors:
Yoshikazu Kawaguchi, Seiichro Maruyama, Hiroyuki Kawasaki
Patented Case
View Patent ↗
Granted: Apr 30, 1985
Filed: Dec 15, 1982
Inventors
Yoshikazu Kawaguchi
Seiichro Maruyama
Hiroyuki Kawasaki
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.
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.