Granted Patent
Utility
US 5,948,396 · App. 08/921,483
Hair fixative amphoteric polymer composition
Inventors:
Suryya K. Das, Soner Kilic, William C. Allison
Patented Case
View Patent ↗
Granted: Sep 7, 1999
Filed: Sep 2, 1997
Inventors
Suryya K. Das
Soner Kilic
William C. Allison
Assignee (at issue)
PPG Industries Ohio, 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.