US3155651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of n, n'-tetrasubstituted 3-amino-2-azaprop-2-en-1-ylideneammonium halides
Assignee: Bayer AG
•
Filing: 1960-12-06
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Granted: 1964-11-03
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Expires: 1980-12-06
Abstract
No abstract record available.
Inventors
- 👤 Gold Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:00
CPC Classifications
C; C07; C07D; C07D413/00; C07D413/02; C07D413/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
29 words
A PROCESS FOR THE PREPARATION OF N,N''-TETRASUBSTITUTED 3-AMINO-2-AZAPROP-2-EN-1-YLIDINE AMMONIUM HALIDES WHICH COMPRISES THE STEPS OF (1) REACTING NOT LESS THAN 6 MOLS OF A SECONDARY N-FORMYLAMINE HAVING THE FORMULA
Claim 2
Dependent Claim
29 words
A PROCESS FOR THE PREPARATION OF N,N''-TETRASUBSTITUTED 3-AMINO-2-AZAPROP-2-EN-1-YLIDINE AMMONIUM HALIDES WHICH COMPRISES THE STEPS OF (1) REACTING NOT LESS THAN 6 MOLS OF A SECONDARY N-FORMYLAMINE HAVING THE FORMULA
Claim 3
Dependent Claim
9 words
AN N,N''TETRASUBSTITUTED 3-AMINO-2-AZAPROP-2-EN-1YLIDENE AMMONIUM HALIDE OF THE FOLLOWING FORMULA
Claim 4
Dependent Claim
9 words
AN N,N''TETRASUBSTITUTED 3-AMINO-2-AZAPROP-2-EN-1YLIDENE AMMONIUM HALIDE OF THE FOLLOWING FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |