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US2829142A
Expired / Lapsed
US
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Metallisable monoazo dyestuffs
Assignee: Novartis AG
•
Filing: 1954-01-28
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Granted: 1958-04-01
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Expires: 1974-01-28
Abstract
No abstract record available.
Inventors
- 👤 Conzetti Achilles
- 👤 Hurbin Meinrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:25
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A MONOAZO DYESTUFF HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
7 words
A MONOAZO DYESTUFF HAVING THE 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) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |