Granted Patent
Utility
US 5,556,971 · App. 08/239,009
Process for preparing isocyanate and isocyanate-based derivatives of certain amino-1,3,5-triazines by direct phosgenation
Inventors:
William Elliott Bay, William Jacobs, III, David Gschneidner, Ram B. Gupta
Patented Case
View Patent ↗
Granted: Sep 17, 1996
Filed: May 6, 1994
Inventors
William Elliott Bay
William Jacobs, III
David Gschneidner
Ram B. Gupta
Assignee (at issue)
CYTEC TECHNOLOGY CORP.
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.