US2665273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azo compounds
Assignee: —
•
Filing: —
•
Granted: 1954-01-05
•
Expires: 1971-01-05
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:24
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/12; C09B43/136; C09B43/16; C09B29/00; C09B29/34; C09B29/36; C09B29/3604; C09B29/3665; C09B29/3669
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
AZO COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
5 words
AZO COMPOUNDS 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) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |