US3257244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing and inhibiting corrosion of anodized aluminum
Assignee: Reynolds Metals Co
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Filing: 1964-10-14
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Granted: 1966-06-21
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Expires: 1984-10-14
Abstract
No abstract record available.
Inventors
- 👤 Barkman Erik Fredrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:35
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
114 words
METHOD FOR TEH TREATMENT OF AN ANODICALLY FORMED COATING ON ALUMINUM AND ALUMINUM BASE ALLOYS FOR SEALING AND INHIBITING CORROSION THEREOF, WHICH COMPRISES APPLYING TO SAID COATING A DILUTE AQUEOUS SOLUTION OF A WATER SOLUBLE BASIC ORGANIC NITROGEN COMPOUND WHICH DOES NOT CONTAIN A POLAR SUBSTITUENT, SELECTED FROM THE GROUP CONSISTING OF HETEROCYCLIC NITROGEN COMPOUNDS CONTAINING AT LEAST ONE BASIC NITROGEN IN A HETEROCYCLIC RING SELECTED FROM THE GROUP CONSISTING OF PYRIDINE, QUINOLINE AND QUINAZOLINE RINGS, MONONUCLEAR CARBOCYCLIC NITROGEN COMPOUNDS CONTAINING AN UNSUBSTITUTED AMINO GROUP, AND THE WATER SOLUBLE SALTS THEREOF, AT A TEMPERATURE BETWEEN ABOUT 160*F. AND THE BOILING POINT OF SAID SOLUTION, AND AT A PH BETWEEN ABOUT 5 AND ABOUT 8.
Claim 2
Dependent Claim
114 words
METHOD FOR TEH TREATMENT OF AN ANODICALLY FORMED COATING ON ALUMINUM AND ALUMINUM BASE ALLOYS FOR SEALING AND INHIBITING CORROSION THEREOF, WHICH COMPRISES APPLYING TO SAID COATING A DILUTE AQUEOUS SOLUTION OF A WATER SOLUBLE BASIC ORGANIC NITROGEN COMPOUND WHICH DOES NOT CONTAIN A POLAR SUBSTITUENT, SELECTED FROM THE GROUP CONSISTING OF HETEROCYCLIC NITROGEN COMPOUNDS CONTAINING AT LEAST ONE BASIC NITROGEN IN A HETEROCYCLIC RING SELECTED FROM THE GROUP CONSISTING OF PYRIDINE, QUINOLINE AND QUINAZOLINE RINGS, MONONUCLEAR CARBOCYCLIC NITROGEN COMPOUNDS CONTAINING AN UNSUBSTITUTED AMINO GROUP, AND THE WATER SOLUBLE SALTS THEREOF, AT A TEMPERATURE BETWEEN ABOUT 160*F. AND THE BOILING POINT OF SAID SOLUTION, AND AT A PH BETWEEN ABOUT 5 AND ABOUT 8.
References Cited (Backward Citations)
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Cited
US2132619A
Cited
GB525734A
Cited
US2574225A
Cited
US2710804A
Cited
US2653926A
Cited
US3017285A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |