Granted Patent
Utility
US 5,869,664 · App. 08/903,703
Process for preparing adduct of imidazole-isocyanuric acid
Inventors:
Mareki Miura, Yoshinobu Ohnuma
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Jul 31, 1997
Inventors
Mareki Miura
Yoshinobu Ohnuma
Assignee (at issue)
SHELL OIL COMPANY
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.