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. 08, 2020
Filed:
Jul. 02, 2018
Toppan Printing Co., Ltd., Taito-ku, Tokyo, JP;
Mikio Shinno, Tokyo, JP;
Reiji Terada, Tokyo, JP;
Kiyoaki Nishitsuji, Tokyo, JP;
Masashi Kurata, Tokyo, JP;
Kenta Takeda, Tokyo, JP;
Naoko Mikami, Tokyo, JP;
Sumika Akiyama, Tokyo, JP;
TOPPAN PRINTING CO., LTD., Tokyo, JP;
Abstract
The ratio of the difference between a surface distance L at each of the different positions in a width direction DW of a metal sheet and a minimum surface distance Lm to the minimum surface distance Lm is an elongation difference ratio. The elongation difference ratio in a center section in the width direction DW of the metal sheet is less than or equal to 3×10. The elongation difference ratios in two edge sections in the width direction DW of the metal sheet are less than or equal to 15×10. The elongation difference ratio in at least one of the two edge sections in the width direction DW of the metal sheet is less than the elongation difference ratio in the center section in the width direction of the metal sheet.