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Patent US3708475A successfully refreshed from Google Patents.
US3708475A
Expired / Lapsed
US
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Process for the production of chlorine-containing v-triazole compounds
Assignee: Novartis Corp
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Filing: 1970-06-03
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Granted: 1973-01-02
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Expires: 1990-06-03
Abstract
Abstract 2,4-DISUBSTITUTED -5-CHLORO-V-TRIAZOLES ARE PRODUCED BY REACTING A 2,4-DISUBSTITUTED-V-TRIAZOLE-1-OXIDE, WITH SULPHURYL CHLORIDE AND REDUCING THE 2,4-DISUBSTITUTED-5CHLORO-V-TRIAZOLE-1-OXIDE OBTAINED WITH NASCENT HYDROGEN. THE-V-TRIAZOLES ARE BRIGHTENERS FOR HIGH-MOLECULAR ORGANIC MATERALS.
Inventors
- 👤 R Kirchmayr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:30
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/02; C07D249/04; C07D249/06
Claims Analysis
Total Claims: 0
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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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |