Granted Patent
Utility
US 5,082,472 · App. 07/608,907
Composite membrane for facilitated transport processes
Inventors:
Robert S. Mallouk, Phillip A. Branca, Randal L. Perry
Patented Case
View Patent ↗
Granted: Jan 21, 1992
Filed: Nov 5, 1990
Inventors
Robert S. Mallouk
Phillip A. Branca
Randal L. Perry
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.