Granted Patent
Utility
US 4,879,232 · App. 07/026,597
Multilayered structure containing immobilized blud-green algae
Inventors:
J. Gavin MacDonald, Ronald Sinclair Nohr
Patented Case
View Patent ↗
Granted: Nov 7, 1989
Filed: Mar 17, 1987
Inventors
J. Gavin MacDonald
Ronald Sinclair Nohr
Assignee (at issue)
Kimberly-Clark Inc.
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.