Relation to security printing
US11059316B2 · kind B2 · utility
1Cited by
0References
10Claims
0Family size
Assignee
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Key dates
| Filing date | May 15, 2019 |
| Grant date | Jul 13, 2021 |
| Priority date | — |
| Expiry date | Nov 27, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/321
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An article comprising a substrate which carries a material of formula (I) M1aM2bWcOd(P(O)nRm)e (I) wherein each of M1 and M2 is independently ammonium or a metal cation; a is 0.01 to 0.5; b is 0 to 0.5; c is 1; d is 2.5 to 3; e is 0.01 to 0.75; n is 1, 2 or 3; m is 1, 2 or 3; and R is an optionally substituted hydrocarbyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.