Granted Patent
Utility
US 5,738,249 · App. 08/694,258
Quantitative powder feeder capable of feeding powder by fixed amounts
Inventors:
Yoshiaki Kikuchi, Tomohiro Arase, Shotaro Matsuda, Ryoichi Yamamoto
Patented Case
View Patent ↗
Granted: Apr 14, 1998
Filed: Aug 8, 1996
Inventors
Yoshiaki Kikuchi
Tomohiro Arase
Shotaro Matsuda
Ryoichi Yamamoto
Assignee (at issue)
Mitsui Petrochemical 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.