US2568620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted triazdfes
Assignee: —
•
Filing: —
•
Granted: 1951-09-18
•
Expires: 1968-09-18
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:15
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/14; C07D251/24; C07D487/00; C07D487/02; C07D487/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
THE METHOD OF PREPARING A HETEROCYCLIC COMPOUND OF THE FORMULA
Claim 2
Independent Claim
10 words
THE METHOD OF PREPARING A HETEROCYCLIC COMPOUND OF THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-17 | 1955-03-19 | 1955-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-17 | 1959-03-19 | 1959-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-17 | 1963-03-19 | 1963-09-18 | $7700.00 | Window Closed / Lapsed |