US2859146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating galvanized metal to inhibit corrosion
Assignee: Republic Steel Corp
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Filing: 1956-07-09
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Granted: 1958-11-04
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Expires: 1976-07-09
Abstract
No abstract record available.
Inventors
- 👤 Alvin F Prust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:23
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
THE METHOD OF TREATING A GALVANIZED METAL SURFACE TO INHIBIT STORAGE STAIN WHICH COMPRISES EXPOSING THE SURFACE TO DILUTE AQUEOUS SOLUTION OF BORAX AND PHOSPHORIC ACID, CONTAINING SODIUM NITRITE IN AMOUNT OF AT LEAST ABOUT 0.1%, THE BORAX BEING IN GREATER AMOUNT THAN THE PHOSPHORIC ACID, AND DRYING THE TREATED SURFACE.
Claim 2
Independent Claim
51 words
THE METHOD OF TREATING A GALVANIZED METAL SURFACE TO INHIBIT STORAGE STAIN WHICH COMPRISES EXPOSING THE SURFACE TO DILUTE AQUEOUS SOLUTION OF BORAX AND PHOSPHORIC ACID, CONTAINING SODIUM NITRITE IN AMOUNT OF AT LEAST ABOUT 0.1%, THE BORAX BEING IN GREATER AMOUNT THAN THE PHOSPHORIC ACID, AND DRYING THE TREATED SURFACE.
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) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |