US2639282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin-dyes of the cyanine type
Assignee: Eastman Kodak Co
•
Filing: 1949-09-29
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Granted: 1953-05-19
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Expires: 1969-09-29
Abstract
No abstract record available.
Inventors
- 👤 Robert H Sprague
- 👤 Leslie G S Brooker
- 👤 Jr Samuel G Dent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:27
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/14; C09B23/145; C09B23/02; C09B23/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A RESIN-DYE SELECTED FROM THOSE REPRESENTED BY THE THREE FOLLOWING GENERAL FORMULAS:
Claim 2
Dependent Claim
12 words
A RESIN-DYE SELECTED FROM THOSE REPRESENTED BY THE THREE FOLLOWING GENERAL FORMULAS:
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) | 1956-05-18 | 1956-11-17 | 1957-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-18 | 1960-11-17 | 1961-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-18 | 1964-11-17 | 1965-05-19 | $7700.00 | Window Closed / Lapsed |