Granted Patent
Utility
US 5,302,749 · App. 07/852,724
Stabilizing method of isocyanate compounds and isocyanate compositions stabilized thereby
Inventors:
Teruyuki Nagata, Hiroyuki Yamashita, Masahiko Kusumoto, Koju Okazaki
Patented Case
View Patent ↗
Granted: Apr 12, 1994
Filed: Mar 17, 1992
Inventors
Teruyuki Nagata
Hiroyuki Yamashita
Masahiko Kusumoto
Koju Okazaki
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.