Granted Patent
Utility
US 6,817,485 · App. 10/428,829
Container for photoresist liquid
Inventors:
Keiji Kawai, Yoshiaki Ito
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: May 5, 2003
Inventors
Keiji Kawai
Yoshiaki Ito
Assignee (at issue)
AICELLO CHEMICAL 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.