US3576748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free-flowing granular detergent compositions containing nta and soap
Assignee: Lever Brothers Co
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Filing: 1969-04-01
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Granted: 1971-04-27
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Expires: 1989-04-01
Abstract
Abstract A GRANULAR DETERGENT COMPOSITION WITH IMPROVED FREEFLOWING PROPERTIES IS OBTAINED BY MAKN A SLURRY OF NONIONIC SYNTHETIC DETERGENT, ANIONIC SYNTHETIC DETERGENT AND BUILDING MIXTURE OF A WATER SOLUBLE ALKALI SALT OF NITRILOTRIACETIC ACID AND AN ALKALINE TRIPOLYPHOSPHATE, HEAT-DRYING THE SLURRY AND THEN ADDING SOAP TO THE HEAT-DRIED COMPOSITION.
Inventors
- 👤 Sigvard Gunnar Peterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:13
CPC Classifications
C; C11; C11D; C11D11/00; C11D11/02; C11D1/00; C11D1/66; C11D1/72; C11D10/00; C11D10/04; C11D3/00; C11D3/02; C11D3/04; C11D3/06; C11D3/16; C11D3/26; C11D3/33; C11D1/02; C11D1/12; C11D1/14
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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |