Patent US2615846A successfully refreshed from Google Patents.
US2615846A
Expired / Lapsed
US
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Washing composition
Assignee: —
•
Filing: —
•
Granted: 1952-10-28
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Expires: 1969-10-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:00
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/02; C11D7/04; C11D7/06; C03; C03C; C03C23/00; C03C23/0075; C11D3/00; C11D3/02; C11D3/04; C11D3/044; C11D3/046; C11D3/16; C11D3/20; C11D3/2075; C11D3/2086; C11D7/08; C11D7/10; C11D7/12; C11D7/22; C11D7/26; C11D7/265; C11D2111/00; C11D2111/10; C11D2111/14; C11D2111/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN THE WASHING OF GLASSWARE, METAL, RUBBER AND THE LIKE WITH WATER CONTAINING DISSOLVED CALCIUM AND MAGNESIUM SALTS WITH HIGHLY CAUSTIC SOLUTIONS, THE METHOD OF PREVENTING DEPOSIT OF UNSLIGHTLY FILMS ON THE ARTICLES BEING WASHED WHICH COMPRISES ADDING TO THE HARD WATER ABOUT 0.25-20% BY WEIGHT OF CAUSTIC ALKALI AND ABOUT 0.25-2% BY WEIGHT OF ALKALI METAL GLUCONATE, THE ADDITIONS BEING FREE FROM IONS CAPABLE OF PRECIPITATING SUBSTANTIAL AMOUNTS OF CALCIUM AND MAGNESIUM SALTS IN THE PRESENCE OF ALKALI METAL GLUCONATE WHEREBY THE ALKALI METAL GLUCONATE SUBSTANTIALLY INHIBITS PRECIPITATION OF THE CALCIUM AND MAGNESIUM SALTS OF THE HARD WATER.
Claim 2
Dependent Claim
99 words
IN THE WASHING OF GLASSWARE, METAL, RUBBER AND THE LIKE WITH WATER CONTAINING DISSOLVED CALCIUM AND MAGNESIUM SALTS WITH HIGHLY CAUSTIC SOLUTIONS, THE METHOD OF PREVENTING DEPOSIT OF UNSLIGHTLY FILMS ON THE ARTICLES BEING WASHED WHICH COMPRISES ADDING TO THE HARD WATER ABOUT 0.25-20% BY WEIGHT OF CAUSTIC ALKALI AND ABOUT 0.25-2% BY WEIGHT OF ALKALI METAL GLUCONATE, THE ADDITIONS BEING FREE FROM IONS CAPABLE OF PRECIPITATING SUBSTANTIAL AMOUNTS OF CALCIUM AND MAGNESIUM SALTS IN THE PRESENCE OF ALKALI METAL GLUCONATE WHEREBY THE ALKALI METAL GLUCONATE SUBSTANTIALLY INHIBITS PRECIPITATION OF THE CALCIUM AND MAGNESIUM SALTS OF THE HARD WATER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |