Patent US2963478A successfully refreshed from Google Patents.
US2963478A
Expired / Lapsed
US
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4, 7-diamino-nu-aralkyl-2-aryl-6-pteridinecarboxamides
Assignee: Smith Kline & French Laboratories Ltd
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Filing: 1959-05-04
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Granted: 1960-12-06
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Expires: 1979-05-04
Abstract
No abstract record available.
Inventors
- 👤 Weinstock Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:34
CPC Classifications
C; C07; C07D; C07D475/00; C07D475/06; C07D475/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A CHEMICAL COMPOUND HAVING THE FOLLOWING STRUCTURAL FORMULA: IN WHICH R1 IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF PHENYL, PHENYL MONOSUBSTITUTED BY A MEMBER SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, LOWER ALKOXY, CHLORO, BROMO AND NITRO, FURYL, THIENYL AND PYRIDYL, ALK IS AN ALKYLENE GROUP OF FROM 1 TO 6 CARBON ATOMS, R2 AND R3 ARE MEMBERS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND LOWER ALKYL, R4 IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF PHENYL,
Claim 2
Dependent Claim
82 words
A CHEMICAL COMPOUND HAVING THE FOLLOWING STRUCTURAL FORMULA: IN WHICH R1 IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF PHENYL, PHENYL MONOSUBSTITUTED BY A MEMBER SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, LOWER ALKOXY, CHLORO, BROMO AND NITRO, FURYL, THIENYL AND PYRIDYL, ALK IS AN ALKYLENE GROUP OF FROM 1 TO 6 CARBON ATOMS, R2 AND R3 ARE MEMBERS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND LOWER ALKYL, R4 IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF PHENYL,
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) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |