US2529206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for increasing the corrosion resistance of ferrous articles
Assignee: General Electric Co
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Filing: 1948-02-18
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Granted: 1950-11-07
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Expires: 1968-02-18
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Winslow
- 👤 Earl W Balis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:24
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/24; C23C22/33; C23C22/82; C23C22/83
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
94 words
A METHOD FOR IMPROVING THE CORROSION RESISTANCE OF THE SURFACE OF A FERROUS ARTICLE WHICH COMPRISES (1) APPLYING TO THE SURFACE OF THE SAID FERROUS ARTICLE A THIN ADHERENT COATING OF AN AQUEOUS SOLUTION COMPRISING AN ALKALI-METAL SILICATE, SAID SOLUTION CONTAINING, BY WEIGHT, FROM 10 TO 90% PHOSPHORIC ACID, BASED ON THE WEIGHT OF THE ALKALI-METAL SILICATE, (2) REMOVING THE WATER FROM THE AQUEOUS SILICATE-PHOSPHORIC ACID SOLUTION COATING AND PASSING THE DRIED COATED ARTICLE THROUGH AN ATMOSPHERE CONTAINING WATER VAPOR, (3) SUBJECTING THE SAID WATER VAPOR-TREATED ARTICLE TO THE VAPORS OF A HYDROCARBON-SUBSTITUTED HALOGENOSDIANE.
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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) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |