Granted Patent
Utility
US 6,686,599 · App. 09/996,926
Ion production device for ion beam irradiation apparatus
Inventors:
Nariaki Hamamoto, Shigeki Sakai
Patented Case
View Patent ↗
Granted: Feb 3, 2004
Filed: Nov 30, 2001
Inventors
Nariaki Hamamoto
Shigeki Sakai
Assignee (at issue)
NISSIN ELECTRIC 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.