US2795575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azo dyes
Assignee: Compagnie Francaise des Matieres Colorantes SARL
•
Filing: 1955-04-29
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Granted: 1957-06-11
•
Expires: 1975-04-29
Abstract
No abstract record available.
Inventors
- 👤 Sureau Robert Frederic Michel
- 👤 Blum Juliette Nicole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:15
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A COUPLINGG COMPONENT BEING A METALLIFEROUS COMPLEX OF A MONO-AZO DYE, THE MONOAZO DYE HAVING THE FORMULA:
Claim 2
Dependent Claim
17 words
A COUPLINGG COMPONENT BEING A METALLIFEROUS COMPLEX OF A MONO-AZO DYE, THE MONOAZO DYE HAVING THE FORMULA:
References Cited (Backward Citations)
US1193829A
Cited
US2675374A
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US2315220A
Cited
US2308023A
Cited
GB599834A
Cited
GB632595A
Cited
US2671775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-10 | 1960-12-10 | 1961-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-10 | 1964-12-10 | 1965-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-10 | 1968-12-10 | 1969-06-11 | $7700.00 | Window Closed / Lapsed |