Fixating image in migrating dye indicator
US6295252A · kind A · utility
42Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1999 |
| Grant date | Sep 25, 2001 |
| Priority date | — |
| Expiry date | Aug 4, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L15/56
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A migrating dye indicator that includes a display layer and a base substrate layer. An adhesive layer is on one surface of the display layer for adhesively attaching the display layer to the base layer. The base layer includes a migrating dye capable of migrating through the adhesive layer to the display layer when the adhesive layer is placed in contact therewith. The adhesive layer contains an accelerator for enhancing the migration of the dye through the adhesive layer. The base layer contains a means for absorbing the accelerator into the base layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.