Granted Patent
Utility
US 6,755,641 · App. 09/654,165
Stack injection molding apparatus with separately actuated arrays of valve gates
Inventor:
Itsuto Nakanishi
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Sep 1, 2000
Inventor
Itsuto Nakanishi
Assignee (at issue)
Mold-Masters 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.