Granted Patent
Utility
US 5,496,475 · App. 07/969,622
Low viscosity polar-solvent fire-fighting foam compositions
Inventors:
Chang H. Jho, Yung Loh, Karl F. Mueller
Patented Case
View Patent ↗
Granted: Mar 5, 1996
Filed: Oct 30, 1992
Inventors
Chang H. Jho
Yung Loh
Karl F. Mueller
Assignee (at issue)
Ciba-Geigy
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.