Patent US3709823A successfully refreshed from Google Patents.
US3709823A
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Method of manufacturing highly viscous,acidic base materials for detergents
Assignee: Mizusawa Industrial Chemicals Ltd
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Filing: 1970-06-16
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Granted: 1973-01-09
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Expires: 1990-06-16
Abstract
Abstract METHOD OF MANUFACTURING HIGHLY VISCOUS, ACIDIC BASE MATERIALS FOR DETERGENTS BY CONVERTING SILICA HYDROGEL OR SILICA ALUMINA HYDROGEL INTO A HYDROSOL WITH WATER BY THE TECHNIQUE OF WET GRINDING, AND CONTACTING THE THUS OBTAINED HYDROSOL WITH MINERAL ACID, THEREBY REGULATING THE MINERAL ACID CONTENT OF SAID HYDROSOL TO FROM 3 TO 20% BY WEIGHT.
Inventors
- 👤 Y Sugahara
- 👤 M Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:06
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/124; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/14; C01B33/146; C01B33/148; C01B33/1485; C11D3/04; C11D3/08
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |