Granted Patent
Utility
US 5,789,519 · App. 08/629,948
High viscosity, high equivalent weight polyisocyanate mixtures containing allophanate and isocyanurate groups and their use in coating compositions
Inventors:
William E. Slack, Douglas A. Wicks
Patented Case
View Patent ↗
Granted: Aug 4, 1998
Filed: Apr 12, 1996
Inventors
William E. Slack
Douglas A. Wicks
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.