Systems and methods for printing patterns using near infrared upconverting inks
US11773282B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Jul 2, 2019 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Apr 19, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M3/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates generally to using upconverting inks for producing highly-resolved patterns for inter alia, security applications. More specifically, the present invention relates to the use of sols (inks) and printing processes that produce well-defined printed features consisting of polymers impregnated with luminescent upconversion nanocrystals. The patterns printed using such inks and processes may exhibit defined shapes, characters of text, and various other types of images.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.