Film production method and film production device
US10263233B2 · kind B2 · utility
0Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2015 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Sep 18, 2035 |
Classification
- Technology area (CPC —)General
Abstract
A method of film production includes the steps of obtaining defect information including information on the position of a defect (D) in a separator original sheet (12b), slitting the separator original sheet (12b) to produce a plurality of separators (12a), and determining, on the basis of the defect information on a single defect (D), that a separator (12a) actually having the defect (D) and another separator (12a) adjacent to the above separator (12a) are defective.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.