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Patent US2888467A successfully refreshed from Google Patents.
US2888467A
Expired / Lapsed
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Anthraquinonyloxy-benzyl amine compounds
Assignee: EIDP Inc
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Filing: 1957-06-13
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Granted: 1959-05-26
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Expires: 1977-06-13
Abstract
No abstract record available.
Inventors
- 👤 Richter John William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:47
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/50; C09B1/501; C09B1/503; C09B1/54; C09B1/547
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE FREE BASE FROM, SALTS AND QUATERNIZATION PRODUCTS OF THE ANTHRAQUINONYLOXY-BENZYL-AMINES OF THE FORMULA
Claim 2
Dependent Claim
22 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE FREE BASE FROM, SALTS AND QUATERNIZATION PRODUCTS OF THE ANTHRAQUINONYLOXY-BENZYL-AMINES OF THE FORMULA
References Cited (Backward Citations)
US2773071A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |