Product and package with a photosensitive use-evident feature
US11279532B2 · kind B2 · utility
1Cited by
37References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2018 |
| Grant date | Mar 22, 2022 |
| Priority date | — |
| Expiry date | Mar 23, 2038 |
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.