US2656353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensitizing dyes containing a 2-thio-2, 5 (3, 4)-thiazoledione nucleus
Assignee: Eastman Kodak Co
•
Filing: 1950-12-29
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Granted: 1953-10-20
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Expires: 1970-12-29
Abstract
No abstract record available.
Inventors
- 👤 Roy A Jeffreys
- 👤 Edward B Knott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:49
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A MEROCYANINE DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
12 words
A MEROCYANINE DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2078233A
Cited
US2170804A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |