Granted Patent
Utility
US 5,606,001 · App. 08/527,913
Polyisocyanates containing allophanate groups and optionally isocyanurate groups
Inventor:
Myron W. Shaffer
Patented Case
View Patent ↗
Granted: Feb 25, 1997
Filed: Sep 14, 1995
Inventor
Myron W. Shaffer
Assignee (at issue)
Bayer Aktiengesellschaft
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.