US2586844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of delta2-1, 3-diazacycloalkenes
Assignee: Wyeth Canada Inc
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Filing: 1948-03-02
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Granted: 1952-02-26
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Expires: 1968-03-02
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Mckay
- 👤 Gordon A Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:25
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/04; C07D233/28; C07D233/44; C07D233/48; C07D239/00; C07D239/02; C07D239/06; C07D239/08; C07D239/12; C07D239/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
41 words
A PROCESS OF PREPARING A 2-SUBSTITUTED AMINO-$2-1,3-DIAZACYCLOALKENE COMPRISING, REACTING A 2-NITRAMINO-$2-1,3-DIAZACYCLOALKENE WITH AN AMINE, HAVING THE FORMULA R-NH2 WHERE R IS A MEMBER OF THE GROUP CONSISTING OF LOWER ALKYL, MONOCYCLIC LOWER ARALKYL, LOWER ALKOXY-ARALKYL AND A RADICAL HAVING THE FORMULA
Claim 2
Dependent Claim
41 words
A PROCESS OF PREPARING A 2-SUBSTITUTED AMINO-$2-1,3-DIAZACYCLOALKENE COMPRISING, REACTING A 2-NITRAMINO-$2-1,3-DIAZACYCLOALKENE WITH AN AMINE, HAVING THE FORMULA R-NH2 WHERE R IS A MEMBER OF THE GROUP CONSISTING OF LOWER ALKYL, MONOCYCLIC LOWER ARALKYL, LOWER ALKOXY-ARALKYL AND A RADICAL HAVING THE FORMULA
Claim 3
Dependent Claim
27 words
A 2-SUBSTITUTED AMINO-$2-1,3-DIAZACYCLOALKENE WHEREIN THE SUBSTITUTENT IS SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, MONOCYCLIC LOWER ARARLKYL, LOWER ALKOXY-ARALKYL RADICALS AND A RADICAL HAVING THE FORMULA
Claim 4
Dependent Claim
27 words
A 2-SUBSTITUTED AMINO-$2-1,3-DIAZACYCLOALKENE WHEREIN THE SUBSTITUTENT IS SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, MONOCYCLIC LOWER ARARLKYL, LOWER ALKOXY-ARALKYL RADICALS AND A RADICAL HAVING THE FORMULA
References Cited (Backward Citations)
US1860036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |