US3681241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fabric softening
Assignee: Lever Brothers Co
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Filing: 1968-03-04
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Granted: 1972-08-01
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Expires: 1988-03-04
Abstract
Abstract A HIGH CONCENTRATION FABRIC SOFTENING EMULSION IS OBTAINED BY COMBINING A QUATERNARY AMMONIUM FABRIC SOFTENTER AND AN AMIDOIMIDAZOLINIUM SULFATE FABRIC SOFTENER, THE LATTER BEING DERIVED FROM C14-C18 FATTY ACIDS CONTAINING AT LEAST 80% SATURATED C16 AND C18 ACIDS. LOW TEMPERATURE STABILITY IS PROVIDED BY THE ADDITIONAL PRESENCE OF AN AMIDOIMIDAZOLINIUM SULFATE DERIVED FROM C14-C18 FATTY ACIDS CONTAINING AT LEAST ABOUT 10% OLEIC ACID.
Inventors
- 👤 Jerome Rudy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:50
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/001; C11D3/0015; C11D1/00; C11D1/38; C11D1/62
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |