Granted Patent
Utility
US 6,713,522 · App. 09/815,874
Peelable foam coating composition
Inventors:
Zhiqiang Zhang, Richard J. Baumgart, Michael A. Dituro, Frances E. Lockwood, Daniel J. Dotson, Wen-Chen Su
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Mar 23, 2001
Inventors
Zhiqiang Zhang
Richard J. Baumgart
Michael A. Dituro
Frances E. Lockwood
Daniel J. Dotson
Wen-Chen Su
Assignee (at issue)
Ashland, Inc.
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.