Filter punch and filter collection system
US4974462A · kind A · utility
2Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 1988 |
| Grant date | Dec 4, 1990 |
| Priority date | — |
| Expiry date | Mar 17, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/288
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A filter punch construction is provided for use in conjunction with a multiwell filtration device wherein each well includes a filtration membrane. The punch has a leading flat surface to which is secured an elongated piercing member having a sharp point and a following surface to which is secured a guide member. The piercing member pierces the filtration membrane in each well and the flat leading surface pushes the entire membrane and retentate thereon into a receptacle vial.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.