US3565890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel di-arylene azolyl-styrene compound and the use thereof
Assignee: Nippon Chemical Works Co Ltd
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Filing: 1964-03-30
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Granted: 1971-02-23
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Expires: 1984-03-30
Abstract
Abstract THIS INVENTION RELATES TO NOVEL DI-ARYLENE AZOLYLSTYRENE COMPOUNDS HAVING AT LEAST ON HIGHER ALKYL RADICAL. THIS INVENTION ALSO RELATES TO THE PROCESSES FOR USING SAID COMPOUNDS AS AN OPTICAL BRIGHTENING AGENT.
Inventors
- 👤 Toshiki Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:11
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/52; C07D263/62; C07D263/64; C07D277/00; C07D277/60; C07D277/62; C07D277/64; C07D277/66; C07D413/00; C07D413/02; C07D413/10; C07D417/00; C07D417/02; C07D417/10; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145; C08K; C08K5/00; C08K5/0008; C08K5/0041; C08K5/16; C08K5/34; C08K5/35; C08K5/36; C08K5/45; C08K5/46; C08K5/47; C09; C09B; C09B23/00; C09B23/0008; C09B23/0016; C09B23/14; C09B23/143; D; D06; D06L; D06L4/00; D06L4/60
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |