Granted Patent
Utility
US 6,660,236 · App. 09/410,029
Apparatus for decomposition and recovery of polyurethane resin
Inventors:
Katsuhisa Kodama, Kouichi Murayama, Takashi Kumaki, Fumihiko Kasuya, Yoshiyuki Nagase, Masaaki Nakata, Satoshi Nishida
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Oct 1, 1999
Inventors
Katsuhisa Kodama
Kouichi Murayama
Takashi Kumaki
Fumihiko Kasuya
Yoshiyuki Nagase
Masaaki Nakata
Satoshi Nishida
Assignees (at issue)
Takeda Chemical Industries Ltd.
Kabushiki Kaisha Kobe Seiko Sho
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.