US2494041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives obtained by reacting gelatin and furoyl halides
Assignee: Eastman Kodak Co
•
Filing: 1947-08-13
•
Granted: 1950-01-10
•
Expires: 1967-08-13
Abstract
No abstract record available.
Inventors
- 👤 Gordon F Frame
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:20
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A GELATIN DERIVATIVE RESULTING FROM HEATING TOGETHER IN SOLUTION GELATIN AND THE HALIDE OF A FUROIC ACID AT A PH OF 8.5-12.
Claim 2
Dependent Claim
22 words
A GELATIN DERIVATIVE RESULTING FROM HEATING TOGETHER IN SOLUTION GELATIN AND THE HALIDE OF A FUROIC ACID AT A PH OF 8.5-12.
References Cited (Backward Citations)
US2317286A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |