Granted Patent
Utility
US 6,156,218 · App. 09/355,651
Method of pretreatment for electroless nickel plating
Inventors:
Toshikazu Okubo, Yoshiyuki Hisumi
Patented Case
View Patent ↗
Granted: Dec 5, 2000
Filed: Aug 2, 1999
Inventors
Toshikazu Okubo
Yoshiyuki Hisumi
Assignee (at issue)
Japan Energy Corporation
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.