Patent US2923669A successfully refreshed from Google Patents.
US2923669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bacterial analysis
Assignee: EMD Millipore Corp
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Filing: 1958-04-08
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Granted: 1960-02-02
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Expires: 1978-04-08
Abstract
No abstract record available.
Inventors
- 👤 Edward J Poitras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:01
CPC Classifications
C; C12; C12M; C12M23/00; C12M23/02; C12M23/10; C12M25/00; C12M25/02; C12M33/00; C12M33/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
THE METHOD OF ASSYING FOR BIOLOGICAL SPECIMENS COMPRISING PROVIDING AN ENCLOSED CONTAINER HAVING A DRAINAGE PORT AND AN INLET PORT AND FILTER FILM ADAPTED TO REMOVE MICRO-ORGANISMS MOUNTED IN SAID CONTAINER ON A POROUS SUPPORTING PAD OVERLYING THE DRAINAGE PORT, INTRODUCING A FLUID TO BE ASSAYED INTO THE INLET PORT AND DRAINAGE SAID DLUID FROM THE OUTLET PORT TO CAUSE SAID FLUID TO FLOW THROUGH SAID FILTER FILM, THERGY COLLECTING BIOLOGICAL SPECIMENS ON THE SURFACE OF SAID FILTER FILM, IMPREGNATING SAID SUPPORTING PAD WITH A NUTRIENT MEDIUM WHILE SAID FILTER FILM IS MOUNTED THEREON, CLOSING SAID CONTAINER, AND INCUBATING THE SPECIMENS COLLECTED.
Claim 2
Independent Claim
102 words
THE METHOD OF ASSYING FOR BIOLOGICAL SPECIMENS COMPRISING PROVIDING AN ENCLOSED CONTAINER HAVING A DRAINAGE PORT AND AN INLET PORT AND FILTER FILM ADAPTED TO REMOVE MICRO-ORGANISMS MOUNTED IN SAID CONTAINER ON A POROUS SUPPORTING PAD OVERLYING THE DRAINAGE PORT, INTRODUCING A FLUID TO BE ASSAYED INTO THE INLET PORT AND DRAINAGE SAID DLUID FROM THE OUTLET PORT TO CAUSE SAID FLUID TO FLOW THROUGH SAID FILTER FILM, THERGY COLLECTING BIOLOGICAL SPECIMENS ON THE SURFACE OF SAID FILTER FILM, IMPREGNATING SAID SUPPORTING PAD WITH A NUTRIENT MEDIUM WHILE SAID FILTER FILM IS MOUNTED THEREON, CLOSING SAID CONTAINER, AND INCUBATING THE SPECIMENS COLLECTED.
References Cited (Backward Citations)
US2672431A
Cited
US2677646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |