Granted Patent
Utility
US 4,666,995 · App. 06/866,984
Oxymethylene polymer molding compositions having enhanced resistance to black speck formation
Inventors:
Andrew Auerbach, Kavilipalayam M. Natarajan
Patented Case
View Patent ↗
Granted: May 19, 1987
Filed: May 15, 1986
Inventors
Andrew Auerbach
Kavilipalayam M. Natarajan
Assignee (at issue)
Celanese GmbH
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.