US2978385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized chymotrypsin solution
Assignee: Armour and Co
•
Filing: 1957-07-05
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Granted: 1961-04-04
•
Expires: 1977-07-05
Abstract
No abstract record available.
Inventors
- 👤 Charles W Damaskus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:13
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A SUBSTANTIALLY STABILIZED AQUEOUS SOLUTION OF CHYMOTRYPSIN CHARACTERIZED BY CONTAINING FROM .05 TO 1.2% BY WEIGHT OF CALCIUM ACETATE, SAID SOLUTION BEING AT A PH OF FROM 3.5 TO 6.0 AND HAVING A CONCENTRATION OF ALPHA CHYMOTRYPSIN RANGING FROM 1 TO 10MG./CC.
Claim 2
Dependent Claim
42 words
A SUBSTANTIALLY STABILIZED AQUEOUS SOLUTION OF CHYMOTRYPSIN CHARACTERIZED BY CONTAINING FROM .05 TO 1.2% BY WEIGHT OF CALCIUM ACETATE, SAID SOLUTION BEING AT A PH OF FROM 3.5 TO 6.0 AND HAVING A CONCENTRATION OF ALPHA CHYMOTRYPSIN RANGING FROM 1 TO 10MG./CC.
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) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |