Method of verifying the usabilty of photosensitive film product just prior to use
US6757492B1 · kind B1 · utility
7Cited by
9References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 22, 2003 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Sep 22, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2217/26
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of verifying the usability of a photosensitive film product just prior to use by applying at least one environmental sensitive label to the photosensitive film product. The environmental sensitive label has at least one cumulative time-temperature indicator and at least one thermal event indicator each providing independent indications of product performance in a predetermined environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.