Granted Patent
Utility
US 5,700,321 · App. 08/687,690
Method of feeding a dopant in a continuously charging method
Inventor:
Keishi Niikura
Patented Case
View Patent ↗
Granted: Dec 23, 1997
Filed: Jul 26, 1996
Inventor
Keishi Niikura
Assignee (at issue)
Komatsu Electronic Metals Co., 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.