Filter punch and filter collection system
US5146794A · kind A · utility
7Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1991 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Jul 17, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/2873
- 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 surface to which is secured an elongated piercing member having a sharp point and a periphery comprising holding or cutting edges and a following surface which has a guide member. The piercing member and cutting edges pierce the filtration membrane in each well and push the entire filter and retentate thereon into a receptacle vial.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.