Granted Patent
Utility
US 6,777,455 · App. 10/111,738
Process for producing polyurethane foam
Inventors:
Hiroshi Seyanagi, Kaoru Inoue, Kazuyuki Ogawa, Takashi Masui, Koichi Ono
Patented Case
View Patent ↗
Granted: Aug 17, 2004
Filed: Apr 25, 2002
Inventors
Hiroshi Seyanagi
Kaoru Inoue
Kazuyuki Ogawa
Takashi Masui
Koichi Ono
Assignees (at issue)
TOYO TIRE & RUBBER CO., LTD.
TOYO BOSEKI KABUSHIKI KAISHA
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.