Granted Patent
Utility
US 6,119,484 · App. 09/164,356
Vacuum degassing apparatus for molten glass
Inventors:
Yusuke Takei, Masataka Matsuwaki, Toshiyasu Kawaguchi, Takashi Kijima, Atsushi Tanigaki, Katsuharu Imamaki, Michito Sasaki, Toshihiro Ishino
Patented Case
View Patent ↗
Granted: Sep 19, 2000
Filed: Oct 1, 1998
Inventors
Yusuke Takei
Masataka Matsuwaki
Toshiyasu Kawaguchi
Takashi Kijima
Atsushi Tanigaki
Katsuharu Imamaki
Michito Sasaki
Toshihiro Ishino
Assignee (at issue)
ASAHI GLASS 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.