Granted Patent
Utility
US 5,773,659 · App. 08/682,588
Process for producing dimethylamine
Inventors:
Michio Fukatsu, Katsumasa Nishijima, Takeshi Narita, Toshio Nakamura, Kiyonobu Niwa
Patented Case
View Patent ↗
Granted: Jun 30, 1998
Filed: Jul 24, 1996
Inventors
Michio Fukatsu
Katsumasa Nishijima
Takeshi Narita
Toshio Nakamura
Kiyonobu Niwa
Assignee (at issue)
Nitto Kagaku Kogyo 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.