Method and apparatus for directly sampling a fluid for microfiltration
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United States of America Patent
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May 25, 2004
Grant Date -
Jul 4, 2002
app pub date -
Feb 6, 2002
filing date -
May 28, 1999
priority date (Note) -
Expired
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Abstract
Filtration cells capable of direct sampling of a fluid from a container and which may be used for microfiltration of both small and large microvolumes of a fluid to be filtered are provided Also a process for directly transferring a fluid to be filtered from a container to a filtration cell is described. The filtration cells have one or more reservoirs and are in communication with fluid in a container to be filtered through a piercing instrument connected to a base and support for a reservoir that receives the fluid to be filtered after it passed across a filter membrane. The filtration cell may then be pressurized and vented to allow fluid to be filtered to reciprocally and tangentially pass across a filter membrane between either a container having a fluid to be filtered and a single reservoir for small volume filtrations or between two reservoirs after pressurizing a fluid to be filtered into the reservoirs from a container using a piercing instrument. Side wells for collecting samples from the bottom up from the filtration cell outlet are also provided as are a process incorporating automated equipment for transferring the container having fluid to be filtered to the piercing point for entry into the filtration cell.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- BIO/DATA CORPORATION
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Coville, William E | Levittown, PA | 13 | 734 |
St, Onge David M | North Wales, PA | 4 | 212 |
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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