Patent US2653882A successfully refreshed from Google Patents.
US2653882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning and inhibiting corrosion of metal tanks of ships
Assignee: Shell Development Co
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Filing: 1951-03-10
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Granted: 1953-09-29
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Expires: 1971-03-10
Abstract
No abstract record available.
Inventors
- 👤 Richard S Treseder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:03
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/14; C23G1/19; B; B08; B08B; B08B9/00; B08B9/08; B63; B63B; B63B57/00; B63B57/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
85 words
A CLEANING AND CORROSION INHIBITING METHOD FOR FERRUGINOUS METAL TANKS OF SEAGOING, CARGOCARRYING AQUATIC VESSELS AT SEA WHICH COMPRISES DIRECTING AGAINST THE INNER WALLS OF SAID TANKS CONTAINING RESIDUAL AMOUNTS OF PETROLEUM PRODUCTS, UNHEATED FRESH WATER HAVING DISSOLVED THEREIN AS THE SOLE EFFECTIVE CORROSION INHIBITOR AN ALKALINE AGENT WHOSE 0.01 MOLAR SOLUTION HAS A PH OF GREATER THAN ABOUT 7.8, THEREBY FORMING A MIXTURE OF SAID PETROLEUM PRODUCTS AND SAID SOLUTION, SEPARATING THE SOLUTION FROM THE REMOVED PRODUCTS, AND RE-USING SAID SOLUTION FOR FURTHER WASHING.
References Cited (Backward Citations)
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US2089648A
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US2359088A
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US2346562A
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US2385175A
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US2369596A
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US2550997A
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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) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |