Granted Patent
Utility
US 5,869,184 · App. 08/804,332
Diguanamines and preparation process, derivatives and use thereof
Inventors:
Tetsuya Oishi, Jin Suzuki, Kouhei Ohkawa, Satoshi Furusawa, Hiroshi Ono, Kazuo Sugazaki
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Feb 14, 1997
Inventors
Tetsuya Oishi
Jin Suzuki
Kouhei Ohkawa
Satoshi Furusawa
Hiroshi Ono
Kazuo Sugazaki
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.