US2713575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of reacting gelatin and oxidized casein with amyl chloroformate
Assignee: Eastman Kodak Co
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Filing: 1952-04-01
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Granted: 1955-07-19
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Expires: 1972-04-01
Abstract
No abstract record available.
Inventors
- 👤 Jr John W Gates
- 👤 Herbert S Elins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:41
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METHOD OF PREPARING AN ALKYL CHLOROFORMATE DERIVATIVE OF A PROTEIN WHICH COMPRISES REACTING UPON AN AQUEOUS SOLUTION OF PROTEIN SELECTED FROM THE GROUP CONSISTING OF GELATIN AND OXIDIZED CASEIN WITH AMYL CHLOROFORMATE AT A PH OF 9-11 AND AT A TEMPERATURE OF 30-50* C. WHEREBY REACTION OCCURS BETWEEN THE PROTEIN AND THE AMYL CHLOROFORMATE.
Claim 2
Independent Claim
55 words
A METHOD OF PREPARING AN ALKYL CHLOROFORMATE DERIVATIVE OF A PROTEIN WHICH COMPRISES REACTING UPON AN AQUEOUS SOLUTION OF PROTEIN SELECTED FROM THE GROUP CONSISTING OF GELATIN AND OXIDIZED CASEIN WITH AMYL CHLOROFORMATE AT A PH OF 9-11 AND AT A TEMPERATURE OF 30-50* C. WHEREBY REACTION OCCURS BETWEEN THE PROTEIN AND THE AMYL CHLOROFORMATE.
References Cited (Backward Citations)
GB425370A
Cited
US2518666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-18 | 1959-01-17 | 1959-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-18 | 1963-01-17 | 1963-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-18 | 1967-01-17 | 1967-07-19 | $7700.00 | Window Closed / Lapsed |