US3145208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of herbicidal derivatives of 2-mercapto-4, 6-bis-amino-s-triazine
Assignee: Novartis AG
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Filing: 1963-07-05
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Granted: 1964-08-18
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 Knusli Enrico
- 👤 Schappi Wilfried
- 👤 Berrer Dagmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:53
CPC Classifications
C; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/40; C07D251/48; C07D251/52; A; A01; A01N; A01N43/00; A01N43/64; A01N43/66; A01N43/68; A01N43/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
IN A PROECSS FOR PREPARING HERBICIDAL DERIVATIVES OF 2-MERCAPTO-4,6-BIS-AMINO-S-TRIZINE FROM 2-HALOGENO-4,6BIS-AMINO-S-TRAZINES, BY REPLACING THE HALOGEN ATOM BY THE HS- GROUP AND TRANSFORMING THE LATTER INTO A HERBICIDALLY-ACTIVE DERIVATIVE, THE IMPROVEMENT CONSISTING ESSENTIALLY OF MIXING AND THEREBY REACTING A 2-HALOGENO-4,6BIS-AMINO-S-TRIAZINE IN AN AQUEOUS MEDIUM, WITH THIOUREA, AND SAPONIFYING THE AREACTION PRODUCT IN AN ALKALINE MEDIUM, THEREBY OBTAINING THE CORRESPONDING 2-MERCAPTO4,6-BIS-AMINO TRIAZINE COMPOUND.
Claim 2
Dependent Claim
61 words
IN A PROECSS FOR PREPARING HERBICIDAL DERIVATIVES OF 2-MERCAPTO-4,6-BIS-AMINO-S-TRIZINE FROM 2-HALOGENO-4,6BIS-AMINO-S-TRAZINES, BY REPLACING THE HALOGEN ATOM BY THE HS- GROUP AND TRANSFORMING THE LATTER INTO A HERBICIDALLY-ACTIVE DERIVATIVE, THE IMPROVEMENT CONSISTING ESSENTIALLY OF MIXING AND THEREBY REACTING A 2-HALOGENO-4,6BIS-AMINO-S-TRIAZINE IN AN AQUEOUS MEDIUM, WITH THIOUREA, AND SAPONIFYING THE AREACTION PRODUCT IN AN ALKALINE MEDIUM, THEREBY OBTAINING THE CORRESPONDING 2-MERCAPTO4,6-BIS-AMINO TRIAZINE COMPOUND.
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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |