Patent US2822360A successfully refreshed from Google Patents.
US2822360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallisable azo dyestuffs and complex heavy metal compounds thereof
Assignee: Novartis AG
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Filing: 1955-03-03
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Granted: 1958-02-04
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Expires: 1975-03-03
Abstract
No abstract record available.
Inventors
- 👤 Ackermann Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 05:15
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/16; C09B45/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A DYESTUFF SELECTED FROM THE GROUP CONSISTING OF THE MONOAZO DYESTUFFS HAVING THE FORMULA:
Claim 2
Dependent Claim
14 words
A DYESTUFF SELECTED FROM THE GROUP CONSISTING OF THE MONOAZO DYESTUFFS HAVING THE FORMULA:
References Cited (Backward Citations)
US1394823A
Cited
CH131253A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |