US2526632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid merocyanine dyes
Assignee: Eastman Kodak Co
•
Filing: 1948-09-08
•
Granted: 1950-10-24
•
Expires: 1968-09-08
Abstract
No abstract record available.
Inventors
- 👤 Leslie G S Brooker
- 👤 Frank L White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:50
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/10; C09B23/105; C09B23/0075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
THE MEROCYANINE DYES REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
9 words
THE MEROCYANINE DYES REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
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) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |