US2687980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thromboplastin product and method for preparing same
Assignee: Individual
•
Filing: 1948-09-15
•
Granted: 1954-08-31
•
Expires: 1968-09-15
Abstract
No abstract record available.
Inventors
- 👤 Ernest W Blanchard
- 👤 Clifford F Gerber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:33
CPC Classifications
A; A61; A61K; A61K35/00; A61K35/12; A61K35/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
PROCESS FOR PREPARING STABLE THROMBOPLASTIN IN SALINE SOLUTION WHICH COMPRISES ADDING TO A SALINE SOLUTION ABOUT 0.5 TO ABOUT 1% BY WEIGHT OF PHENOL, EXTRACTING GROUND FRESH THROMBOPLASTIN-CONTAINING ANIMAL TISSUE WITH SAID SALINEPHENOL SOLUTION, THEN SEPARATING THE TISSUE RESIDUE FROM THE REMAINING LIQUID, RECOVERING THE LIQUID, AND MAINTAINING THE PH OF THE LIQUID IN THE RANGE OF ABOUT 6.5 TO 7.0.
Claim 2
Dependent Claim
61 words
PROCESS FOR PREPARING STABLE THROMBOPLASTIN IN SALINE SOLUTION WHICH COMPRISES ADDING TO A SALINE SOLUTION ABOUT 0.5 TO ABOUT 1% BY WEIGHT OF PHENOL, EXTRACTING GROUND FRESH THROMBOPLASTIN-CONTAINING ANIMAL TISSUE WITH SAID SALINEPHENOL SOLUTION, THEN SEPARATING THE TISSUE RESIDUE FROM THE REMAINING LIQUID, RECOVERING THE LIQUID, AND MAINTAINING THE PH OF THE LIQUID IN THE RANGE OF ABOUT 6.5 TO 7.0.
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) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |