Granted Patent
Utility
US 4,238,388 · App. 06/050,207
Derivatives of 1,3,5-triazacycloheptane-2,4-dione and their use as polymer stabilizers
Inventors:
Giuseppe Cantatore, Paolo Cassandrini
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Jun 20, 1979
Inventors
Giuseppe Cantatore
Paolo Cassandrini
Assignee (at issue)
Chimosa Chimica Organica S.p.A.
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.