US3844895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtration and incubation apparatus
Assignee: EMD Millipore Corp
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Filing: 1973-10-17
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Granted: 1974-10-29
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Expires: 1993-10-17
Abstract
Abstract An apparatus for filtering fluids formed from two mating housing sections, each having a fluid inlet and adapted, when joined, to hold therebetween a filter and a pad therefor, and form a chamber above the filter and seal the chamber from the atmosphere. The filter has a hydrophobic edge extending into the chamber to permit air to pass through the edge.
Inventors
- 👤 R Rose
- 👤 A Reti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:16
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/02; B; B01; B01D; B01D29/00; B01D29/01; C12M; C12M23/00; C12M23/02; C12M23/08; C12M33/00; C12M33/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
APPARATUS FOR COLLECTING, ISOLATING AND GROWING MICROORGANISMS WHICH COMPRISES A CONTAINER ADAPTED TO RETAIN LIQUID NUTRIENT FOR MICROORGANISMS, SAID CONTAINER HAVING A COVER TO RETAIN AT LEAST ONE SWAB WITHIN SAID FILTERING LIQUIDS WHICH COMP LIQUID OUTLET, APPARATUS FOR FILTERING LIQUIDS WHICH COMPRISE A FIST HOUSING SECTION HAVING AN INLET, A FLAT FFILTER AND A SUPPOR PAD FOR SAID FILTER SUPPORTED BY A SECOND HOUSING SECTION, SAID FIRST AND SECOND HOUSING SECTIONS BEING SHAPED TO FORM A CHAMBER ADJACENT AN INLET SURFACE OF SAID FILTER, TO FFORM A SEAL BETWEEN SAID HOUSING SECTIONS, AND TO HOLD SAID FILTER AND PAD STATIONARY ADJACENT SAID CHAMBER, SAID FILTER HAVING A POROUS EDGE FORMED OF A HYDROPHOBIC MATERIAL WHIH EDGE EXTENDS INTO SAID CHAMBER, THE LIQUID OUTLET OF SAID COVER BEING FIT INTO THE INLET OF SAID FIRST HOUSING SECTION TO FORM A SEAL THEREWITH FROM THE ATMOSPHERE.
Claim 2
Dependent Claim
145 words
APPARATUS FOR COLLECTING, ISOLATING AND GROWING MICROORGANISMS WHICH COMPRISES A CONTAINER ADAPTED TO RETAIN LIQUID NUTRIENT FOR MICROORGANISMS, SAID CONTAINER HAVING A COVER TO RETAIN AT LEAST ONE SWAB WITHIN SAID FILTERING LIQUIDS WHICH COMP LIQUID OUTLET, APPARATUS FOR FILTERING LIQUIDS WHICH COMPRISE A FIST HOUSING SECTION HAVING AN INLET, A FLAT FFILTER AND A SUPPOR PAD FOR SAID FILTER SUPPORTED BY A SECOND HOUSING SECTION, SAID FIRST AND SECOND HOUSING SECTIONS BEING SHAPED TO FORM A CHAMBER ADJACENT AN INLET SURFACE OF SAID FILTER, TO FFORM A SEAL BETWEEN SAID HOUSING SECTIONS, AND TO HOLD SAID FILTER AND PAD STATIONARY ADJACENT SAID CHAMBER, SAID FILTER HAVING A POROUS EDGE FORMED OF A HYDROPHOBIC MATERIAL WHIH EDGE EXTENDS INTO SAID CHAMBER, THE LIQUID OUTLET OF SAID COVER BEING FIT INTO THE INLET OF SAID FIRST HOUSING SECTION TO FORM A SEAL THEREWITH FROM THE ATMOSPHERE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |