US2794032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acylaminoanthraquinones
Assignee: Saul and Co
•
Filing: 1955-01-24
•
Granted: 1957-05-28
•
Expires: 1975-01-24
Abstract
No abstract record available.
Inventors
- 👤 Frey Wolfgang
- 👤 Peter Albin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:54
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/50; C09B1/51; C09B1/516
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
AN ACYLAMINOANTHRAQUINONE WHICH CORRESPONDS TO THE FORMULA
Claim 2
Dependent Claim
7 words
AN ACYLAMINOANTHRAQUINONE WHICH CORRESPONDS TO 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) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |