Nonoral preparation having three-layer structure
US7695729B2 · kind B2 · utility
0Cited by
9References
5Claims
0Family size
Inventor
Key dates
| Filing date | May 24, 2001 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Jun 30, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/30
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The purpose of the present invention is to provide micro- or mili-capsules and film preparations having not only sustained-release function but also targeting and adhesive functions with approximately 100% loading efficiency of the objective substance. The present invention provides a parenteral preparation having three layers structure of; basement layer composed of polymer; carrying layer that contains objective substances selected from drugs, aroma chemicals, mosquito propellant, dyes, cells or antigens; and surface layer, and in which the carrying layer is sandwiched between the basement layer and the surface layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.