Granted Patent
Utility
US 4,575,385 · App. 06/509,843
Permeation modified gas separation membranes
Inventors:
Albert A. Brooks, Joel R. Fried, Jay Henis, Anthony Zampini, Daniel Raucher
Patented Case
View Patent ↗
Granted: Mar 11, 1986
Filed: Jun 30, 1983
Inventors
Albert A. Brooks
Joel R. Fried
Jay Henis
Anthony Zampini
Daniel Raucher
Assignee (at issue)
Monsanto 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.