Granted Patent
Utility
US 6,168,766 · App. 08/937,115
Process for leaching copper from copper sulfide using bacteria
Inventors:
Tetsuo Imai, Atsushi Saitoh
Patented Case
View Patent ↗
Granted: Jan 2, 2001
Filed: Sep 24, 1997
Inventors
Tetsuo Imai
Atsushi Saitoh
Assignee (at issue)
Nippon Mining & Metals Co., Ltd.
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.