Patent US3274230A successfully refreshed from Google Patents.
US3274230A
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Pentasubstituted guanidines containing cyano groups
Assignee: EIDP Inc
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Filing: 1962-09-18
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Granted: 1966-09-20
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Expires: 1982-09-18
Abstract
No abstract record available.
Inventors
- 👤 Robert A Braun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:16
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/18; C07D295/195; C09; C09D; C09D167/00; C09D167/08; C09F; C09F9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A COMPOUND REPRESENTED BY THE FOLLOWING STRUCTURAL FORMULA R1-N(-R2)-C(=N-R5)-N(-R3)-R4 IN WHICH EACH OF: R1, R2, R3 AND R4 ARE RADICALS SELECTED FROM THE CLASS CONSISTING OF C1-C5 ALKYL, C3-C5 ALKENYL AND C1-C4 ALKOXY-C1:C4 ALKYL; AND R5 IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF CYANOETHYL AND CYANOVINYL.
Claim 2
Dependent Claim
48 words
A COMPOUND REPRESENTED BY THE FOLLOWING STRUCTURAL FORMULA R1-N(-R2)-C(=N-R5)-N(-R3)-R4 IN WHICH EACH OF: R1, R2, R3 AND R4 ARE RADICALS SELECTED FROM THE CLASS CONSISTING OF C1-C5 ALKYL, C3-C5 ALKENYL AND C1-C4 ALKOXY-C1:C4 ALKYL; AND R5 IS A MEMBER SELECTED FROM THE CLASS CONSISTING OF CYANOETHYL AND CYANOVINYL.
References Cited (Backward Citations)
US1766755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |