Granted Patent
Utility
US 5,300,544 · App. 02/030,999
Non-migrating 1-hydrocarbyloxy-2,2,6,6-tetramethylpiperdine 1,3,5-triazine derivatives as polymer stabilizers
Inventors:
James P. Galbo, Ramanathan Ravichandran, Mark S. Holt
Patented Case
View Patent ↗
Granted: Apr 5, 1994
Filed: Mar 12, 1993
Inventors
James P. Galbo
Ramanathan Ravichandran
Mark S. Holt
Assignee (at issue)
Ciba-Geigy
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.