US2551316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
9-aminoalkyl 9-alkanoyl 9, 10 dihydroanthracenes
Assignee: GD Searle LLC
•
Filing: 1948-02-20
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Granted: 1951-05-01
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Expires: 1968-02-20
Abstract
No abstract record available.
Inventors
- 👤 John W Cusic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:01
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A MEMBER OF THE GROUP CONSISTING OF AN ORGANIC BASE AND SALTS THEREOF, SAID ORGANIC BASE BEING 9-AMINOALKYL-9-ALKANOYL-9,10-DIHYDROANTHRACENE HAVING THE FORMULA
Claim 2
Dependent Claim
21 words
A MEMBER OF THE GROUP CONSISTING OF AN ORGANIC BASE AND SALTS THEREOF, SAID ORGANIC BASE BEING 9-AMINOALKYL-9-ALKANOYL-9,10-DIHYDROANTHRACENE HAVING THE FORMULA
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) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |