Patent US3635959A successfully refreshed from Google Patents.
US3635959A
Expired / Lapsed
US
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2-(4-(3-loweralkyl - 4 -phenyl-v-triazole)-styryl)-benzothiazoles and benzoxazoles
Assignee: Novartis Corp
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Filing: 1969-11-19
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Granted: 1972-01-18
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Expires: 1989-11-19
Abstract
Abstract 2-(4-(O-ALKYL-4-PHENYL-V-TRIAZOLE)-STYRYL)-BENZOXAZOLES AND -BENZOTHIAZOLES ARE BRIGHTNERS FOR ORGANIC MATERIAL. THE COMPOUNDS ARE OBTINED FROM THE OXIMS OF THE COUPLING PRODUCTS OF P-DIAZO-2-STYRYLBENZOXAZOLES AND BENZYLALKYLKETONES THROUGH SPLITTING OFF WATER.
Inventors
- 👤 Gaudenz Girell Di Giovanoel
- 👤 Reinhard Zweidler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:32
CPC Classifications
D; D06; D06L; D06L4/00; D06L4/60; D06L4/614
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |