US3749682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detergent composition
Assignee: Lever Brothers Co
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Filing: 1971-07-23
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Granted: 1973-07-31
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Expires: 1991-07-23
Abstract
Abstract A DETERGENT COMPOSITION WITH GOOD ANTI-SOIL-REDEPOSITION CHARACTERISTICS FOR SYNTHETIC AND SIMILAR FABRICS IS PROVIDED BY INCORPORATING THEREIN A SMALL PROPORTION OF A COPOLYMER OF VINYLPYRROLIDONE AND VINYLACETATE. GENERALLY THE VINYLPYRROLIDONE/VINYLACETATE COPOLYMERS INCORPORATED HAVE AN AVERAGE MOLECULAR WEIGHT WITHIN THE RANGE OF ABOUT 10,000 TO ABOUT 400,000, PREFERABLY FROM ABOUT 20,000 TO ABOUT 200,000.
Inventors
- 👤 E Tanner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:50
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3769; C11D3/3776; C11D3/0005; C11D3/0036
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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |