US2767134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of sealing anodized aluminum and aluminum base alloys
Assignee: Jervis Corp
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Filing: 1949-07-05
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Granted: 1956-10-16
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Expires: 1969-07-05
Abstract
No abstract record available.
Inventors
- 👤 Hampel Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:31
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/18; C25D11/24; C25D11/246
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
PROCESS OF SEALING ALUMINUM OXIDE COATING ON ALUMINUM OR ALUMINUM ALLOYS WHICH COMPRISES HEATING AN ARTICLE HAVING AN ELECTROLYTICALLY PRODUCED ALUMINUM OXIDE COATING FOR ABOUT FIFTEEN MINUTES IN AN AQUEOUS SOLUTION OF SODIUM NITRITE WITHIN A TEMPERARURE RANGE OF FROM ABOUT 160* F. TO BELOW THE BOILING POINT OF SAID SOLUTION.
Claim 2
Dependent Claim
51 words
PROCESS OF SEALING ALUMINUM OXIDE COATING ON ALUMINUM OR ALUMINUM ALLOYS WHICH COMPRISES HEATING AN ARTICLE HAVING AN ELECTROLYTICALLY PRODUCED ALUMINUM OXIDE COATING FOR ABOUT FIFTEEN MINUTES IN AN AQUEOUS SOLUTION OF SODIUM NITRITE WITHIN A TEMPERARURE RANGE OF FROM ABOUT 160* F. TO BELOW THE BOILING POINT OF SAID 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) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |