Patent US3053844A successfully refreshed from Google Patents.
US3053844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mono-acyl derivatives of s-triazolo [2, 3-c] pyrimidines
Assignee: Imperial Chemical Industries Ltd
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Filing: 1960-03-21
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Granted: 1962-09-11
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Expires: 1980-03-21
Abstract
No abstract record available.
Inventors
- 👤 Miller George William
- 👤 Rose Francis Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:43
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A PYRIMIDINE DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULAE:
Claim 2
Dependent Claim
13 words
A PYRIMIDINE DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULAE:
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) | 1965-09-10 | 1966-03-12 | 1966-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-10 | 1970-03-12 | 1970-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-10 | 1974-03-12 | 1974-09-11 | $7700.00 | Window Closed / Lapsed |