Granted Patent
Utility
US 5,670,553 · App. 08/705,869
Internal mold release compositions
Inventor:
Paul William Mackey
Patented Case
View Patent ↗
Granted: Sep 23, 1997
Filed: Aug 28, 1996
Inventor
Paul William Mackey
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.