Patent US2948392A successfully refreshed from Google Patents.
US2948392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of aluminum surfaces
Assignee: EIDP Inc
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Filing: 1956-06-18
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Granted: 1960-08-09
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Expires: 1976-06-18
Abstract
No abstract record available.
Inventors
- 👤 James H Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:07
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/48; C23C22/56
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
A PACKAGE COMPRISING A CONTAINER HAVING AN INTERIOR ALUMINUM SURFACE COATED WITH A NON-POROUS, NON-ADSORPTIVE OXIDE COATING AND CONTAINING AN AQUEOUS HYDROGEN PEROXIDE SOLUTION IN CONTACT WITH SAID OXIDE COATING SAID OXIDE COATING HAVING BEEN FORMED UPON SAID ALUMINUM SURFACE BY THE ACTION OF A NITRIC ACID SOLUTION OF A STRENGTH IN THE RANGE 25 TO 75%, AND HAVING BEEN RENDERED NON-POROUS AND NON-ABSORPTIVE BY A SUBSEQUENT TREATMENT THEREOF WITH WATER AT A TEMPERATURE OF AT LEAST 80*C.
References Cited (Backward Citations)
US2102925A
Cited
US2316487A
Cited
US2437220A
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US2473456A
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US2767134A
Cited
US2671996A
Cited
US2671995A
Cited
GB747859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |