US2842480A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of thromboplastin
Assignee: Ortho Pharmaceutical Corp
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Filing: 1954-05-27
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Granted: 1958-07-08
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Expires: 1974-05-27
Abstract
No abstract record available.
Inventors
- 👤 Heron O Singher
- 👤 Emanuel A Swart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:28
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN A METHOD FOR THE PREPARATION OF THROMBOPLASTIN, THE STEPS WHICH COMPRISE, FINELY DIVIDING RABBIT TISSUES SELECTED FROM THE GROUP CONSISTING OF BRAIN AND LUNG TISSUE, EXTRACTING THE FINELY DIVIDED TISSUE WITH AN AQUEOUS SOLUTION, BUFFERED AT A PH WITHIN THE RANGE OF 5-8, CONTAINING AN ALCOHOL SELECTED FROM THE CLASS CONSISTING OF METHANOL AND ETHANOL AND MIXTURE THEREOF IN THE AMOUNT OF 5-20 PERCENT BY VOLUME AND 0.01-6.0 PERCENT BY WEIGHT OF AN AMINO ACID HAVING NOT MORE THAN NINE CARBON ATOMS, SEPARATING THE FINELY DIVIDED TISSUE FROM THE EXTRACTING SOLUTION AND DIALIZING THE EXTRACTING SOLUTION AGAINST DISTILLED WATER.
Claim 2
Dependent Claim
100 words
IN A METHOD FOR THE PREPARATION OF THROMBOPLASTIN, THE STEPS WHICH COMPRISE, FINELY DIVIDING RABBIT TISSUES SELECTED FROM THE GROUP CONSISTING OF BRAIN AND LUNG TISSUE, EXTRACTING THE FINELY DIVIDED TISSUE WITH AN AQUEOUS SOLUTION, BUFFERED AT A PH WITHIN THE RANGE OF 5-8, CONTAINING AN ALCOHOL SELECTED FROM THE CLASS CONSISTING OF METHANOL AND ETHANOL AND MIXTURE THEREOF IN THE AMOUNT OF 5-20 PERCENT BY VOLUME AND 0.01-6.0 PERCENT BY WEIGHT OF AN AMINO ACID HAVING NOT MORE THAN NINE CARBON ATOMS, SEPARATING THE FINELY DIVIDED TISSUE FROM THE EXTRACTING SOLUTION AND DIALIZING THE EXTRACTING SOLUTION AGAINST DISTILLED WATER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |