US2494910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and composition for coating aluminum
Assignee: Henkel Corp
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Filing: 1948-07-12
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Granted: 1950-01-17
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Expires: 1968-07-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Frank Palin Spruance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:45
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/34; C23C22/37; C23C22/38; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
65 words
IN A PROCESS FOR COATING METAL CHOSEN FROM THE GROUP CONSISTING OF ALUMINUM AND ALLOYS THEREOF IN WHICH ALUMINUM IS THE PRINCIPAL INGREDIENT WITH AN ADHERENT COATING, THE STEP WHICH CONSISTS IN SUBJECTING THE METAL TO THE ACTION OF AN AQUEOUS SOLUTION THE ESSENTIAL ACTIVE COATING-PRODUCING INGREDIENTS OF WHICH ARE FLUORIDE ION, DICHROMATE ION AND PHOSPHATE ION, THE IONS BEING PRESENT IN AMOUNTS EQUVALENT TO
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) | 1953-01-16 | 1953-07-18 | 1954-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-16 | 1957-07-18 | 1958-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-16 | 1961-07-18 | 1962-01-17 | $7700.00 | Window Closed / Lapsed |