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Patent US2676138A successfully refreshed from Google Patents.
US2676138A
Expired / Lapsed
US
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Stabilized papain composition and its preparation
Assignee: STWB Inc
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Filing: 1951-05-31
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Granted: 1954-04-20
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Expires: 1971-05-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Emil T Hinkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:52
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/96
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A STABLE, DRY PAPAIN COMPOSITION OF HIGH PROTEOLYTIC ACTIVITY HAVING INCORPORATED THEREIN A MINOR QUANTITY OF SODIUM BISULFITE.
Claim 2
Dependent Claim
18 words
A STABLE, DRY PAPAIN COMPOSITION OF HIGH PROTEOLYTIC ACTIVITY HAVING INCORPORATED THEREIN A MINOR QUANTITY OF SODIUM BISULFITE.
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) | 1957-04-19 | 1957-10-19 | 1958-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-19 | 1961-10-19 | 1962-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-19 | 1965-10-19 | 1966-04-20 | $7700.00 | Window Closed / Lapsed |