US3042587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized desoxyribonuclease preparation
Assignee: Merck and Co Inc
•
Filing: 1960-11-29
•
Granted: 1962-07-03
•
Expires: 1980-11-29
Abstract
No abstract record available.
Inventors
- 👤 Baumgarten Werner
- 👤 Reginald F Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:34
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF STABILIZING A PREPARATION CONTAINING PANCREATIC DESOXYRIBONUCLEASE WHICH COMPRISES ADDING TO IT A SALT HAVING ITS CATION SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND BARIUM, THE SALT BEING ADDED IN AN AMOUNT SUCH THAT THE CALCIUM IONS ARE PRESENT IN THE RANGE OF 1.35% TO 4.2% AND THE BARIUM IONS ARE PRESENT IN THE RANGE OF 4.7% TO 14.8% BY WEIGHT BASED ON THE DESOXYRIBONUCLEASE.
Claim 2
Independent Claim
68 words
THE METHOD OF STABILIZING A PREPARATION CONTAINING PANCREATIC DESOXYRIBONUCLEASE WHICH COMPRISES ADDING TO IT A SALT HAVING ITS CATION SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND BARIUM, THE SALT BEING ADDED IN AN AMOUNT SUCH THAT THE CALCIUM IONS ARE PRESENT IN THE RANGE OF 1.35% TO 4.2% AND THE BARIUM IONS ARE PRESENT IN THE RANGE OF 4.7% TO 14.8% BY WEIGHT BASED ON THE DESOXYRIBONUCLEASE.
References Cited (Backward Citations)
US2677642A
Cited
US2978385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |