Sanitary napkin
US7959622B2 · kind B2 · utility
4Cited by
22References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2006 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Feb 2, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/15357
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A sanitary napkin includes a liquid-permeable topsheet, a backsheet, and a liquid-absorbent layer disposed between the topsheet and the backsheet. The liquid-absorbent layer has a vagina-facing region on a longitudinal centerline of the sanitary napkin and side regions on both sides of the vagina-facing region. The liquid-absorbent layer has a greater thickness and a greater bending stiffness in the vagina-facing region than in the side regions to provide hinge lines along boundaries between the vagina-facing region and the side regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.