Tamper indicating label
US4180929A · kind A · utility
41Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 23, 1978 |
| Grant date | Jan 1, 1980 |
| Priority date | — |
| Expiry date | Jan 23, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/915
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Tamper indicating label having strong protective film applied to a relatively fragile base film having adhesive on the opposite side. Sets of indicia and masking layers are printed on the label base with inks of differing adhesivity and overlain by a layer of clear polymeric material such as an ink residue having relatively low adhesivity to the label base but good adhesivity to the masking layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.