US3689425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent compositions containing novel optical brightening agents
Assignee: Bayer Corp
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Filing: 1970-06-15
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Granted: 1972-09-05
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Expires: 1990-06-15
Abstract
Abstract 2-BENZOXAZOL-6-YL-2H-NAPHTHO(1,2-D)TRIAZOLES, 2-BENZOTHIAZOL-6-YL-2H-NAPHTHOL(1,2-D)TRIAZOLES AND 2-BENZIMIDAZOL-6-YL-2H-NAPHTHO(1,2-D)TRIAZOLES, HAVING ATTACHED AT THE 2-POSITION OF THE BENZ-X-AZOL-6-YL RING THEREOF A SUBSTITUENT OF FROM 8-18 CARBON ATOMS AND 4-8 CONJUGATED DOUBLE BONDS, ARE OPTICAL WHITENING AND BRIGHTENING AGENTS HAVING PARTICULARLY DESIRABLE SHADES OF FLUORESCENCE.
Inventors
- 👤 Nathan N Crounse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:50
CPC Classifications
C; C09; C09B; C09B29/00; C09B29/06; C09B29/08; C09B29/095; C09B29/0955
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |