Patent US2755239A successfully refreshed from Google Patents.
US2755239A
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Sealing baths
Assignee: Novartis AG
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Filing: 1954-03-05
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Granted: 1956-07-17
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Expires: 1974-03-05
Abstract
No abstract record available.
Inventors
- 👤 Glauser Walter
- 👤 Keller Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:28
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
59 words
IN A PROCESS FOR SEALING THE OXIDE COATING OF ANODICALLY OXIDISED ALUMINIUM, THE IMPROVEMENT WHICH COMPRISES SUBJECTING THE ANODICALLY OXIDISED ALUMINUM TO THE ACTION OF A HOT WATER SEALING BATH IN THE PRESENCE IN THE BATH OF WATER-SOLUBLE FORMALDEHYDE CONDENSATION PRODUCT OF AN AROMATIC SULPHONIC ACID AND OF IONS SELECTED FROM THE GROUP CONSISTING OF NICKEL AND COLBALT IONS.
Claim 2
Dependent Claim
59 words
IN A PROCESS FOR SEALING THE OXIDE COATING OF ANODICALLY OXIDISED ALUMINIUM, THE IMPROVEMENT WHICH COMPRISES SUBJECTING THE ANODICALLY OXIDISED ALUMINUM TO THE ACTION OF A HOT WATER SEALING BATH IN THE PRESENCE IN THE BATH OF WATER-SOLUBLE FORMALDEHYDE CONDENSATION PRODUCT OF AN AROMATIC SULPHONIC ACID AND OF IONS SELECTED FROM THE GROUP CONSISTING OF NICKEL AND COLBALT IONS.
References Cited (Backward Citations)
US2008733A
Cited
US2204539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |