US3708301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azo couplers of the cyanoacetylated polyamine class
Assignee: Andrews Paper and Chemical Co Inc
•
Filing: 1969-11-24
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Granted: 1973-01-02
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Expires: 1989-11-24
Abstract
Abstract CYANOACETYLATED POLYAMINES AS A NEW CLASS OF AZO COUPLERS, USEFUL IN THE DIAZOTYPE REPRODUCTION PROCESS AS COUPLING COMPONENTS FOR DIAZOTYPE REPRODUCTION MATERIALS. THE CYANOCETYLATED POLYAMINES ARE SUBSTANTIALLY NON-VOLATILE, NON-MIGRATORY AND EXHIBIT EXCELLENT STABILITY.
Inventors
- 👤 P Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:00
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |