Patent US2763639A successfully refreshed from Google Patents.
US2763639A
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Protein derivatives and their preparation
Assignee: Eastman Kodak Co
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Filing: 1952-09-26
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Granted: 1956-09-18
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Expires: 1972-09-26
Abstract
No abstract record available.
Inventors
- 👤 Herbert S Elins
- 👤 Donald C Bellis
- 👤 Jr John W Gates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:52
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/22; G03C7/25; G03C1/00; G03C1/005; G03C1/04; G03C1/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A METHOD OF PREPARING A PROTEIN DERIVATIVE WHICH COMPRISES REACTING A PROTEIN SELECTED FROM THE GROUP CONSISTING OF THE ALBUMENS, THE PHOSPHO PROTEINS, THE SCLERO PROTEINS AND THE SEED PROTEINS WITH AN ESTER SELECTED FROM THE GROUP CONSISTING OF THE ORTHO AND PARA-NITROPHENYL AND THE HALO PHENYL ESTERS OF THE ORGANIC ACIDS AT A PH WITHIN THE RANGE OF 8-12 AND A TEMPERATURE OF 30-73* C.
Claim 2
Independent Claim
66 words
A METHOD OF PREPARING A PROTEIN DERIVATIVE WHICH COMPRISES REACTING A PROTEIN SELECTED FROM THE GROUP CONSISTING OF THE ALBUMENS, THE PHOSPHO PROTEINS, THE SCLERO PROTEINS AND THE SEED PROTEINS WITH AN ESTER SELECTED FROM THE GROUP CONSISTING OF THE ORTHO AND PARA-NITROPHENYL AND THE HALO PHENYL ESTERS OF THE ORGANIC ACIDS AT A PH WITHIN THE RANGE OF 8-12 AND A TEMPERATURE OF 30-73* C.
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) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |