Granted Patent
Utility
US 6,790,900 · App. 09/854,148
Treatment agent for hydrophilicity and method for preparing thereof
Inventors:
Masahiko Matsukawa, Toshio Inbe, Tatsuo Yoshida
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: May 12, 2001
Inventors
Masahiko Matsukawa
Toshio Inbe
Tatsuo Yoshida
Assignee (at issue)
Nippon Print 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.