US2708669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making cyanine dyes and certain products
Assignee: Eastman Kodak Co
•
Filing: 1952-09-26
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Granted: 1955-05-17
•
Expires: 1972-09-26
Abstract
No abstract record available.
Inventors
- 👤 Larive Henri
- 👤 Pierre D Collet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:52
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/62; C07D213/70; C07D213/71; A; A47; A47L; A47L13/00; A47L13/10; A47L13/14; A47L13/146; C07D277/00; C07D277/60; C07D277/84; C09; C09B; C09B23/00; C09B23/02; C09B23/04; C09B23/10; C09B23/102; C09B23/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
24 words
A PROCESS FOR PREPARING CYANINE DYES COMPRISING CONDENSING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING TWO GENERAL FORMULA
Claim 2
Dependent Claim
24 words
A PROCESS FOR PREPARING CYANINE DYES COMPRISING CONDENSING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING TWO GENERAL FORMULA
Claim 3
Dependent Claim
12 words
A TRINUCLEAR DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 4
Dependent Claim
12 words
A TRINUCLEAR DYE SELECTED FROM THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
GB562754A
Cited
US2432060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |