Patent US3171797A successfully refreshed from Google Patents.
US3171797A
Expired / Lapsed
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Method of sealing anodic aluminum oxide coatings
Assignee: Motors Liquidation Co
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Filing: 1963-03-20
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Granted: 1965-03-02
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Expires: 1983-03-20
Abstract
No abstract record available.
Inventors
- 👤 Otto J Klingenmaier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:24
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/18; C25D11/24; C25D11/246
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
69 words
A METHOD OF SEALING ANODICALLY FORMED ALUMINUM OXIDE COATINGS COMPRISING THE STEPS OF IMMERSING THE ANODIZED ALUMINUM INTO A SOLUTION HEATED TO A TEMPERATURE OF ABOUT 180* TO 212*F. CONSISTING ESSENTIALLY OF WATER, 0.01% TO 0.1% BY WEIGHT OF DISODIUM 4-DODECYLATED OXYDIBENZENE SULFONATE, AND SUFFICIENT ACID TO ESTABLISH A PH OF BETWEEN ABOUT 5 AND 7, AND MAINTAINING SAID ALUMINUM IN SAID SOLUTION FOR AT LEAST ABOUT FIVE MINUTES.
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) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |