Product and package with a photosensitive use-evident feature
US9938058B2 · kind B2 · utility
1Cited by
20References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 2016 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Jun 7, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2401/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A product includes a container, a photosensitive material carried by the container and responsive to ultraviolet light, and a UV protector carried by the container to protect the photosensitive material from exposure to UV light. A method of producing a food or beverage container includes applying a photochromic material to a food or beverage container that is responsive to ultraviolet (UV) light so as to darken upon exposure thereto, and protecting at least a portion of the photochromic material from exposure to UV light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.