Granted Patent
Utility
US 6,340,641 · App. 09/297,343
Substrate flattening method and film-coated substrate made thereby
Inventors:
Ryo Muraguchi, Akira Nakashima, Atsushi Tonai, Michio Kimatsu, Katsuyuki Machida, Hakaru Kyuragi, Kazuo Imai
Patented Case
View Patent ↗
Granted: Jan 22, 2002
Filed: Apr 29, 1999
Inventors
Ryo Muraguchi
Akira Nakashima
Atsushi Tonai
Michio Kimatsu
Katsuyuki Machida
Hakaru Kyuragi
Kazuo Imai
Assignees (at issue)
CATALYSTS & CHEMICALS INDUSTRIES CO., LTD.
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
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.