US2858301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coona
Assignee: —
•
Filing: —
•
Granted: 1958-10-28
•
Expires: 1975-10-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:18
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A DIAZOAMINO DERIVATIVE SELECTED THOSE HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
10 words
A DIAZOAMINO DERIVATIVE SELECTED THOSE HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2124594A
Cited
US2168800A
Cited
US2522838A
Cited
US2675374A
Cited
US2078387A
Cited
US2572916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |