Patent US3281408A successfully refreshed from Google Patents.
US3281408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-(2-amino-4-azido-6-phenyl-5-pyrimidinyl)-2-propanone semicarbazone and congeners
Assignee: GD Searle LLC
•
Filing: 1966-01-27
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Granted: 1966-10-25
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Expires: 1986-01-27
Abstract
No abstract record available.
Inventors
- 👤 Hans A Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:23
CPC Classifications
C; C07; C07D; C07D239/00; C07D239/02; C07D239/24; C07D239/28; C07D239/32; C07D239/42; C07D239/46; C07D239/47; C07D239/48
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
26 words
A COMPOUND ACFORDING TO CLAIM 1 WHICH IS 1-(2AMINO - 4 - AZIDO - 6 - PHENYL - 5 - PYRIMIDINYL) - 2 - PROPANONE 4-(P-PHENYLAZOPHENYL)SEMICARBAZONE.
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) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |