Thermally protective camera case
US6377755B1 · kind B1 · utility
5Cited by
24References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1997 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Dec 17, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to an article comprising photographic silver halide film substantially surrounded by a container comprising a phase change material, wherein said container will maintain said film at a temperature of below 130° F.(55° C.) when said container is repeatedly cycled over a 24-hour period reaching 180° F.(82° C.) for four hours.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.