Granted Patent
Utility
US 5,925,714 · App. 08/206,078
Surfactant for self-inverting polyacrylmides
Inventors:
Eric H. Larson, Manilal S. Dahanayake, William R. Busler
Patented Case
View Patent ↗
Granted: Jul 20, 1999
Filed: Mar 4, 1994
Inventors
Eric H. Larson
Manilal S. Dahanayake
William R. Busler
Assignee (at issue)
SNF SA
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.