Method for creating a hidden pattern
US10618330B2 · kind B2 · utility
1Cited by
0References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2016 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Mar 9, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB42D25/29
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention relates to a method for creating a hidden pattern on a substrate, wherein a liquid treatment composition comprising at least one acid is deposited by inkjet printing onto a substrate, which comprises at least one external surface comprising a salifiable alkaline or alkaline earth compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.