Granted Patent
Utility
US 5,919,521 · App. 09/040,790
Method of marking an area with a dry foamable composition
Inventor:
Sadanand Memula
Patented Case
View Patent ↗
Granted: Jul 6, 1999
Filed: Mar 18, 1998
Inventor
Sadanand Memula
Assignee (at issue)
Witco Corporation
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.