Filtration device and method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 20, 2018
Grant Date -
Oct 17, 2013
app pub date -
Dec 20, 2011
filing date -
Dec 21, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Embodiments of the present invention relate to a filtration device for use in filtration of a liquid, and disclose: a liquid receptacle having an open end and a closed end; a plunger body moveable at least partially within the liquid receptacle along an axis said axis extending between the open and closed ends, said plunger including a filtrate chamber in fluid communication with the liquid receptacle via a fluid filtering path and a filter disposed in the filtering path, and the device further including a slidable seal for inhibiting or preventing fluid flow across the seal during said plunger movement; wherein said seal includes a first skirt depending from the plunger at one end of the first skirt, said first skirt having an outer surface which in use slidably and sealingly abuts the vial, and having, at least in an uncompressed state, a generally annular separation between the skirt and the plunger body, which separation extends generally parallel to the axis. A second skirt, overlapping the first skirt, is disclosed also.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2011 Application Filing Year
- B01L Class
- 590 Applications Filed
- 483 Patents Issued To-Date
- 81.87 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- B01L Class
- 27.53 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Sep 20, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Sep 20, 2029 |
