Granted Patent
Utility
US 4,337,089 · App. 06/220,352
Copper-nickel-tin alloys for lead conductor materials for integrated circuits and a method for producing the same
Inventors:
Kishio Arita, Kiyoshi Murakawa, Toshio Takahashi
Patented Case
View Patent ↗
Granted: Jun 29, 1982
Filed: Dec 29, 1980
Inventors
Kishio Arita
Kiyoshi Murakawa
Toshio Takahashi
Assignees (at issue)
Nippon Telegraph and Telephone Public Corporation
Nippon Bell Parts Co., Ltd.
Nihon Telecommunication Engineering 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.