Thermal signal tampon pledget
US8198504B2 · kind B2 · utility
20Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2008 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Mar 5, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/421
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a tampon pledget, a quantity of moisture activated material is positioned in contact with, or adjacent to a layer of absorbent material used in forming the pledget. Upon contact with menses, the moisture activated material reacts in one of an endothermic and exothermic manner so that in use, the pledget, when forming part of a tampon can thermally alert a wearer when the pledget has reached its absorbent capacity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.