Granted Patent
Utility
US 5,645,757 · App. 08/449,869
Dry pourable powder premix composition for inclusion in a halogen-containing vulcanizable polymer composition comprising thioester derivative of 2,5-dimercapto-1,2,4-thiadiazole crosslinking agent, glycerin and finely divided material
Inventor:
Jay Bernard Class
Patented Case
View Patent ↗
Granted: Jul 8, 1997
Filed: May 25, 1995
Inventor
Jay Bernard Class
Assignee (at issue)
HERCULES LLC
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.