US3696097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heterocyclic substituted vinyl-v-triazoles of the coumarin series, and their use for the optical brightening of organic materials
Assignee: Novartis Corp
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Filing: 1970-06-04
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Granted: 1972-10-03
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Expires: 1990-06-04
Abstract
Abstract New 2-(3-arylcoumarinyl-(7))-4-aryl-vinyl-v-triazoles are brighteners of high-molecular organic materials. The compounds are obtained by splitting off water from isnitrosoarylideneacetone(-3-aryl-coumarinyl-(7))-hydrazone.
Inventors
- 👤 Hans Schlapfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:40
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/45; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/52; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
8 words
The compound of claim 1 which is 2-(3-phenylcoumarinyl-(7))-4-(2-(1-phenyl-3,5-dimethyl-pyrazolyl-4)-vinyl)-v-triazole.
Claim 2
Dependent Claim
8 words
The compound of claim 1 which is 2-(3-phenylcoumarinyl-(7))-4-(2-(2-phenyl-v-triazolyl-4)-vinyl)-v-triazole.
Claim 3
Dependent Claim
9 words
The compOund of claim 1 which is 2-(3-phenylcoumarinyl-(7))-4-(2-(4,6-diphenyl-s-triazinyl-2)-vinyl)-v -triazole.
References Cited (Backward Citations)
US3501490A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |