Patent US3062684A successfully refreshed from Google Patents.
US3062684A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inhibiting corrosion of iron and steel
Assignee: Shell USA Inc
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Filing: 1958-08-25
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Granted: 1962-11-06
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Expires: 1978-08-25
Abstract
No abstract record available.
Inventors
- 👤 Richard S Treseder
- 👤 Roos Huib De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:51
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/18; C23F11/181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A CLEANING AND CORROSION INHIBITING PROCESS FOR FERRUGINOUS METAL CARGO COMPARTMENTS OF A SEA-GOING OIL TANKER WHICH COMPRISES; SPRAYING THE INNER SURFACES OF SAID COMPARTMENT CONTAINING RESIDUAL AMOUNTS OF REFINED PETROLEUM PRODUCTS WITH AN AQUEOUS SOLUTION OF ALKALI METAL FERROCYANIDE IN WHICH SAID FERROCYANIDE PRESENT IS BETWEEN 11 AND 24% OF THE WEIGHT OF THE SOLUTION.
Claim 2
Dependent Claim
56 words
A CLEANING AND CORROSION INHIBITING PROCESS FOR FERRUGINOUS METAL CARGO COMPARTMENTS OF A SEA-GOING OIL TANKER WHICH COMPRISES; SPRAYING THE INNER SURFACES OF SAID COMPARTMENT CONTAINING RESIDUAL AMOUNTS OF REFINED PETROLEUM PRODUCTS WITH AN AQUEOUS SOLUTION OF ALKALI METAL FERROCYANIDE IN WHICH SAID FERROCYANIDE PRESENT IS BETWEEN 11 AND 24% OF THE WEIGHT OF THE SOLUTION.
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) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |