US3238231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble sulfonic acid deriva-tives of benzanthronylaminoan-thraquiones
Assignee: EIDP Inc
•
Filing: 1962-03-19
•
Granted: 1966-03-01
•
Expires: 1982-03-19
Abstract
No abstract record available.
Inventors
- 👤 Deinet Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:17
CPC Classifications
C; C09; C09B; C09B3/00; C09B3/02; C09B3/06; C09B3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
THE WATER-SOLUBLE PRODUCT OF THE PROCESS WHICH COMPRISES REACTING (1) A BENZANTHRONYLAMINOANTHRAQUINONE COMPOUND HAVING A MOLECULAR LINKAGE SELECTED FROM THE GROUP CONSISTING OF (A) X-BZ-NH-AQ-NH-BZ-X, (B) X-AQ-NH-BZ-NH-AQ-X, AND
Claim 2
Dependent Claim
28 words
THE WATER-SOLUBLE PRODUCT OF THE PROCESS WHICH COMPRISES REACTING (1) A BENZANTHRONYLAMINOANTHRAQUINONE COMPOUND HAVING A MOLECULAR LINKAGE SELECTED FROM THE GROUP CONSISTING OF (A) X-BZ-NH-AQ-NH-BZ-X, (B) X-AQ-NH-BZ-NH-AQ-X, AND
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |