Granted Patent
Utility
US 5,889,068 · App. 08/899,556
Water blown polyurethane soling systems
Inventors:
Edmund J. Madaj, William E. Slack
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: Jul 24, 1997
Inventors
Edmund J. Madaj
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.