US2952673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5-arylazorhodanines
Assignee: STANFFER CHEMICAL Co
•
Filing: 1958-02-28
•
Granted: 1960-09-13
•
Expires: 1978-02-28
Abstract
No abstract record available.
Inventors
- 👤 Benghiat Isaac
- 👤 John C Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:59
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/02; C07D277/20; C07D277/32; C07D277/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
ARYLAZO-RHODANINES OF THE GENERAL FORMULA:
Claim 2
Dependent Claim
5 words
ARYLAZO-RHODANINES OF THE GENERAL FORMULA:
References Cited (Backward Citations)
US2028141A
Cited
US1962109A
Cited
US2683709A
Cited
US2683708A
Cited
FR1129111A
Cited
US2743211A
Cited
US2832764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |