Patent US3214445A successfully refreshed from Google Patents.
US3214445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of (oxyphenoxy)-phenylamino dihydroxy-anthraquinone
Assignee: Novartis AG
•
Filing: 1963-04-22
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Granted: 1965-10-26
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Expires: 1983-04-22
Abstract
No abstract record available.
Inventors
- 👤 Hindermann Peter
- 👤 Kolliker Hans Peter
- 👤 Staub Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:25
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/50; C09B1/51; C09B1/514
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A DYESTUFF OF THE FORMULA
Claim 2
Dependent Claim
5 words
A DYESTUFF OF THE 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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |