US2776280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical sensitizing dyes containing a n-carbamylmethyl group
Assignee: Eastman Kodak Co
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Filing: 1954-10-14
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Granted: 1957-01-01
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Expires: 1974-10-14
Abstract
No abstract record available.
Inventors
- 👤 Leslie G S Brooker
- 👤 Donald W Heseltine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:03
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; C; C09; C09B; C09B23/00; C09B23/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
A COMPOUND SELECTED FROM THOSE EPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
11 words
A COMPOUND SELECTED FROM THOSE EPRESENTED 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) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |