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US2920068A
Expired / Lapsed
US
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Process for treating protein with pyrocarbonic acid esters
Assignee: Bayer AG
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Filing: 1957-07-02
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Granted: 1960-01-05
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Expires: 1977-07-02
Abstract
No abstract record available.
Inventors
- 👤 Bernhard Hermann
- 👤 Genth Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:17
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A PROCESS FOR TREATING A PROTEIN SELECTED FROM THE GROUP CONSISTING OF GELATIN AND GLUE WHICH COMPRISES ADDING A PYROCARBONIC ACID ESTER GRADUALLY WITH STIRRING TO A NEUTRAL AQUEOUS SOLUTION OF THE PROTEIN AT A TEMPERATURE BETWEEN 35 AND 50*C., SAID PYROCARBONIC ACID ESTER HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
48 words
A PROCESS FOR TREATING A PROTEIN SELECTED FROM THE GROUP CONSISTING OF GELATIN AND GLUE WHICH COMPRISES ADDING A PYROCARBONIC ACID ESTER GRADUALLY WITH STIRRING TO A NEUTRAL AQUEOUS SOLUTION OF THE PROTEIN AT A TEMPERATURE BETWEEN 35 AND 50*C., SAID PYROCARBONIC ACID ESTER HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2713574A
Cited
US2713575A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |