US3557005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent compositions containing 3-substituted 2,5 diphenyl-heterocycle brighteners
Assignee: Procter and Gamble Co
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Filing: 1967-07-14
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Granted: 1971-01-19
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Expires: 1987-07-14
Abstract
Abstract 2,5 - DIPHENYLFURANS, 2,5 - DIPHENYLPYRROLES AND 2,5-DIPHENYLTHIOPHENES HAVING AUXOCHROMIC SUBSTITUENTS IN THE 3 POSITION ARE USEFUL BRIGHTNERS IN LAUNDRY DETERGENT COMPOSITIONS WHICH CONTAIN AN ORGANIC DETERGENT AND AN ALKALINE BUILDER SALT AND ARE PARTICULARLY EFFECTIVE IN BRIGHTENING NYLON AND ACETATE FABRICS.
Inventors
- 👤 Charles D Broaddus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:50
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/40; C11D3/42
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |