US2666763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of 3-amino-2, 3-dihydrothionaphthene-1, 1-dioxide
Assignee: GD Searle LLC
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Filing: 1953-03-16
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Granted: 1954-01-19
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Expires: 1973-03-16
Abstract
No abstract record available.
Inventors
- 👤 John W Cusic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:37
CPC Classifications
C; C07; C07D; C07D333/00; C07D333/50; C07D333/52; C07D333/62; C07D333/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A COMPOUND OF THE STRUCTURAL FORMULA WHEREIN A IS A LOWEWR ALKYLENE RADICAL SEPARATING THE TWO NITROGEN ATOMS ATTACHED THERETO BY AT LEAST TWO CARBON ATOMS AND RR''N IS A MEMBER OF THE CLASS CONSISTING OF MORPHOLINO, PYRROLIDINO AND PIPERIDINO RADICALS AND RADICALS WHEREIN R AND R'' ARE MEMBERS OF THE CLASS CONSISTING OF HYDROGEN AND LOWER ALKYL RADICALS.
Claim 2
Dependent Claim
59 words
A COMPOUND OF THE STRUCTURAL FORMULA WHEREIN A IS A LOWEWR ALKYLENE RADICAL SEPARATING THE TWO NITROGEN ATOMS ATTACHED THERETO BY AT LEAST TWO CARBON ATOMS AND RR''N IS A MEMBER OF THE CLASS CONSISTING OF MORPHOLINO, PYRROLIDINO AND PIPERIDINO RADICALS AND RADICALS WHEREIN R AND R'' ARE MEMBERS OF THE CLASS CONSISTING OF HYDROGEN AND LOWER ALKYL RADICALS.
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) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |