Granted Patent
Utility
US 6,242,556 · App. 09/499,603
Liquid MDI adducts with improved freeze stability
Inventors:
Peter H. Markusch, Richard S. Pantone, Ralf Guether, William E. Slack
Patented Case
View Patent ↗
Granted: Jun 5, 2001
Filed: Feb 7, 2000
Inventors
Peter H. Markusch
Richard S. Pantone
Ralf Guether
William E. Slack
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.