Granted Patent
Utility
US 6,326,440 · App. 09/554,236
Biodegradable film and process for producing the same
Inventors:
Shigenori Terada, Jun Takagi
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: May 11, 2000
Inventors
Shigenori Terada
Jun Takagi
Assignee (at issue)
MITSUBISHI PLASTICS, 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.