Patent US2801956A successfully refreshed from Google Patents.
US2801956A
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Process for preparing pancreatic desoxyribonuclease
Assignee: Merck and Co Inc
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Filing: 1954-08-24
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Granted: 1957-08-06
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Expires: 1974-08-24
Abstract
No abstract record available.
Inventors
- 👤 Baumgarten Werner
- 👤 Reginald F Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:18
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/14; C12N9/16; C12N9/22; Y; Y10; Y10S; Y10S435/00; Y10S435/814; Y10S435/816
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) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |