Granted Patent
Utility
US 5,635,392 · App. 08/347,351
Nutrient mixtures for the bioremediation of polluted soils and waters
Inventors:
Bettina Kopp-Holtwiesche, Albrecht Weiss, Adelheid Boehme
Patented Case
View Patent ↗
Granted: Jun 3, 1997
Filed: Dec 1, 1994
Inventors
Bettina Kopp-Holtwiesche
Albrecht Weiss
Adelheid Boehme
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.