Granted Patent
Utility
US 5,744,504 · App. 08/801,130
Diguanamines and preparation process, derivatives and use thereof
Inventors:
Tetsuya Oishi, Jin Suzuki, Kouhei Ohkawa, Satoshi Furusawa, Hiroshi Ono
Patented Case
View Patent ↗
Granted: Apr 28, 1998
Filed: Feb 14, 1997
Inventors
Tetsuya Oishi
Jin Suzuki
Kouhei Ohkawa
Satoshi Furusawa
Hiroshi Ono
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.