Patent US2497057A successfully refreshed from Google Patents.
US2497057A
Expired / Lapsed
US
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Toilet bowl -gleanee
Assignee: —
•
Filing: —
•
Granted: 1950-02-07
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Expires: 1967-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:11
CPC Classifications
C; C11; C11D; C11D17/00; C11D17/0047; C11D17/0056; A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/05; C11D17/0065; C11D17/0073; C11D3/00; C11D3/0005; C11D3/0052; C11D3/02; C11D3/04; C11D3/046; C11D3/10; C11D3/16; C11D3/20; C11D3/2075; C11D3/2086; C11D3/37; C11D3/3703; C11D3/3707; C11D7/00; C11D7/02; C11D7/04; C11D7/10; C11D7/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
A TABLETTED COMPOSITION FOR CLEANING TOILET BOWLS CONSISTING ESSENTIALLY OF SODIUM ACID SULPHATE, A SUBSTANTIAL BUT LESS THAN MOLECULAR EQUIVALENT AMOUNT OF SODIUM BICARBONATE, EFFECTIVE WHEN DISSOLVED IN WATER TO LIBERATE AN AMOUNT OF CARBON DIOXIDE SUFFICIENT TO AGITATE THE WATER IN A TOILET BOWL, AND A NORMALLY SOLID WATER SOLUBLE ORGANIC STABILIZER WHICH IS NONREACTIVE IN RESPECT TO THE SODIUM ACID SULPHATE AND SODIUM BICARBONATE, SAID STABILIZER BEING PRESENT AS A SURFACE COATING ON THE PARTICLES OF REACTANTS, AND BEING SUFFICIENT IN AMOUNT TO PREVENT REACTIVITY IN THE TABLET BETWEEN THE SODIUM BICARBONATE AND SODIUM ACID SULPHATE UNTIL THE TABLET IS INTRODUCED INTO WATER.
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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) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |