Granted Patent
Utility
US 5,149,722 · App. 07/751,393
Dispersant for carbon black-filled foam
Inventor:
Thomas G. Soukup
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Aug 28, 1991
Inventor
Thomas G. Soukup
Assignees (at issue)
Celotex Corporation
Apache Building Products Company
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.