Granted Patent
Utility
US 5,631,332 · App. 08/584,551
Curing agents for epoxy resins comprising bis(aminomethyl)bicyclo[2.2.1]heptane adducts
Inventors:
Minato Karasawa, Takuji Shimizu
Patented Case
View Patent ↗
Granted: May 20, 1997
Filed: Jan 11, 1996
Inventors
Minato Karasawa
Takuji Shimizu
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.