Patent US3798131A successfully refreshed from Google Patents.
US3798131A
Expired / Lapsed
US
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Assay for polymeric dna as a method for detecting malignancy
Assignee: PASADENA FOUNDATION FOR MEDICA
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Filing: 1972-04-24
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Granted: 1974-03-19
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Expires: 1992-04-24
Abstract
Abstract A METHOD IS DISCLOSED FOR DETERMINING POLYMERIC DNA AND THEREWITH THE PRESENCE OF CANCEROUS CELLS. A SAMPLE OF A BIOLOGICAL FLUID, SUCH AS BLOOD SERUM, IRRIGATION FLUIDS, ETC., IS OBTAINED AND FILTERED. A FLUORESCENT STANCE IS ADMIXED WITH THE FILTRATE WHICH IS CAPABLE OF BINDING WITH POLYMERIC DNA, AFTER WHICH THE FLUORESCENT INTENSITY OF THE MIXTURE IS DETERMINED. THE POLYMERIZED DNA CONTENT OF THE SOLUTION IS DIGESTED AND THE FLUORECENT INTENSITY MEASURED A SECOND TIME. THE DIFFERENCE IN THE TWO READING INDICATES QUANTITATIVELY THE POLYMERIZED DNA PRESENT, WHICH HAS BEEN FOUND TO BE AN INDICATION OF THE PRESENCE OF CANCEROUS CELLS.
Inventors
- 👤 D Rounds
- 👤 K Narayan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:28
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |