Patch and patch preparation
US9040077B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 2010 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Aug 24, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/00651
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides to a patch and a patch preparation having low stretchability, which can be continuously adhered to the skin for a long time without undesirable detachment and marked falling off from the skin due to various factors during adhesion, and specifically provides a low stretchable patch and a patch preparation containing a support and an adhesive layer formed on one surface of the support, wherein a ratio P of the total length W (mm) of curved sections of a planar outer shape of the patch to the total length S (mm) of straight-line sections of the planar outer shape of the patch (W/S) is not more than 1.22, and, when the curved sections are approximated by a circular arc, the radius R (mm) of the circular arc is not less than 0.5 mm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.