The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 2010
Filed:
Mar. 07, 2007
Takemi Muroga, Tsuchiura, JP;
Yasuyuki Ito, Tsuchiura, JP;
Koji Aoyagi, Tsuchiura, JP;
Yoshiki Yamamoto, Tsukuba, JP;
Kenji Yokomizo, Tokyo, JP;
Katsumi Nomura, Tsuchiura, JP;
Takemi Muroga, Tsuchiura, JP;
Yasuyuki Ito, Tsuchiura, JP;
Koji Aoyagi, Tsuchiura, JP;
Yoshiki Yamamoto, Tsukuba, JP;
Kenji Yokomizo, Tokyo, JP;
Katsumi Nomura, Tsuchiura, JP;
Hitachi Cable, Ltd., Tokyo, JP;
Abstract
A rolled copper foil applied with a recrystallization annealing after a final cold rolling step and having a crystal grain alignment satisfying a ratio of [a]/[b]≧3, where [a] and [b] are normalized average intensities of a {111}plane diffraction of a copper crystal by β-scanning at α=35° and 74°, respectively, in an X-ray diffraction pole figure measurement to a rolled surface is manufactured by controlling a total working ratio in the final cold rolling step before the recrystallization annealing to be 94% or more; and controlling a working ratio per one pass in the final cold rolling step to be 15 to 50%.