Granted Patent
Utility
US 6,069,641 · App. 09/027,220
Ion flow recording apparatus and liquid developing method
Inventors:
Junichi Matsuno, Shogo Matsumoto, Taisaku Seino, Yasushi Kinoshita, Akira Mori, Keiji Kamio, Akira Sasaki, Mitsuo Suzuki, Tetsuro Akasaki, Shigetaka Furukawa
Patented Case
View Patent ↗
Granted: May 30, 2000
Filed: Feb 20, 1998
Inventors
Junichi Matsuno
Shogo Matsumoto
Taisaku Seino
Yasushi Kinoshita
Akira Mori
Keiji Kamio
Akira Sasaki
Mitsuo Suzuki
Tetsuro Akasaki
Shigetaka Furukawa
Assignee (at issue)
HITACHI, 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.