Patent US2631951A successfully refreshed from Google Patents.
US2631951A
Expired / Lapsed
US
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Corrosion protected zinc products and method of producing them
Assignee: Poor and Co
•
Filing: 1950-11-30
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Granted: 1953-03-17
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Expires: 1970-11-30
Abstract
No abstract record available.
Inventors
- 👤 Allan E Chester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:35
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/24; C23C22/26; C23C22/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A PROCESS OF COLORING ZINC AND OF PROTECTING IT AGAINST CORROSION WHICH COMPRISES TREATING A ZINC SURFACED ARTICLE WITH AN AMOUNT OF AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF CHORMIC ACID, AMMONIUM PERSULFATE AND TRIFLUOROACETIC ACID SUFFICIENT TO FORM A UNIFORM BRONZE COLORED FILM ON SAID SURFACE.
Claim 2
Dependent Claim
46 words
A PROCESS OF COLORING ZINC AND OF PROTECTING IT AGAINST CORROSION WHICH COMPRISES TREATING A ZINC SURFACED ARTICLE WITH AN AMOUNT OF AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF CHORMIC ACID, AMMONIUM PERSULFATE AND TRIFLUOROACETIC ACID SUFFICIENT TO FORM A UNIFORM BRONZE COLORED FILM ON SAID SURFACE.
References Cited (Backward Citations)
US2483510A
Cited
US2548420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |