US3682829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of low silica content dry,granular automatic dish washing detergent
Assignee: DeSoto Inc
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Filing: 1970-09-10
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Granted: 1972-08-08
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Expires: 1990-09-10
Abstract
Abstract DRY, GRANULAR AUTOMATIC DISH WASHING DETERGENT IS PROVIDED BY SLOWLY SPRAYING AQUEOUS ALKALI METAL SILICATE SOLUTION OF RELATIVELY HIGH SILICA CONTENT ONTO AGITATED PARTICLES OF ANHYDROUS GRANULAR ALKALI METAL TRIPOLYPHOSPHATE TO DIRECTLY PROVIDE A DRY POWDER HAVING A SILICA CONTENT IN THE RANGE OF 8.5 TO 10% BY WEIGHT, BASED ON THE WEIGHT OF THE SILICATED TRIPOLYPHOSPHATE. THE GRANULAR PARTICLES IN THE DRY POWDER HAVE A CORE OF ALKALI METAL TRIPOLYPHOSPHATE WITH THE SILICATE BEING SUPERIMPOSED ABOUT THE POLYPHOSPHATE CORE. FROM ABOUT 0.5 TO ABOUT 3% OF A CHLORINATED ISOCYANURATE IS ADDED TO PROVIDE ACTIVE CHLORINE IN A STABLE COMPOSITION.
Inventors
- 👤 Robert S Cooper
- 👤 Donald C Wood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:55
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/0039; C11D3/00; C11D3/02; C11D3/04; C11D3/06; C11D3/08; C11D3/395; C11D3/3958
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |