Wetlaid unitary stratified composite
US6670522B1 · kind B1 · utility
92Cited by
61References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2000 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Jul 25, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249949
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A unitary stratified composite composed of a first stratum and a second stratum integrally connected by a transition zone is disclosed. The first stratum serves as a liquid acquisition stratum that rapidly acquires and then transfers liquid to the second stratum. The second stratum serves to withdraw liquid from the first stratum and further serves as a temporary storage stratum. Methods for forming the unitary stratified composite are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.