US3414489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bondable coating on aluminum and method of applying it
Assignee: Bell Aerospace Corp
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Filing: 1966-01-13
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Granted: 1968-12-03
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Expires: 1986-01-13
Abstract
No abstract record available.
Inventors
- 👤 Narvel L Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:03
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
105 words
A METHOD FOR FORMING A CORROSION-RESISTANT ADHESIVEBONDABLE SURFACE ON ALUMINUM AND ALUMINUM ALLOYS, COMPRISING CLEANING AND RINSING THE METAL SURFACE, REMOVING SCALE AND OXIDES ON THE METAL BY SUBJECTING IT TO DEOXIDIZING CONDITIONS, ANODIZING THE SURFACE TO FORM A COATING OF ALUMINUM OXIDE, RINSING THE ANODIZED ALUMINUM IN ROOM TEMPERATURE WATER, THEREAFTER IMMERSING IT FOR SEVERAL MINUTES IN A SEALING AND BONDING SOLUTION MAINTAINED AT ABOUT 180-195*F. AND A PH OF ABOUT 2.5 TO 3.7; SAID SEALING AND BONDING SOLUTION COMPRISING HIGH PURITY WATER TO WHICH HAS BEEN ADDED ABOUT 50 TO 200 P.P.M. OF CHROMIC ACID (CHROMIUM TRIOXIDE), AND THEREAFTER DRYING THE TREATED ALUMINUM.
Claim 2
Independent Claim
105 words
A METHOD FOR FORMING A CORROSION-RESISTANT ADHESIVEBONDABLE SURFACE ON ALUMINUM AND ALUMINUM ALLOYS, COMPRISING CLEANING AND RINSING THE METAL SURFACE, REMOVING SCALE AND OXIDES ON THE METAL BY SUBJECTING IT TO DEOXIDIZING CONDITIONS, ANODIZING THE SURFACE TO FORM A COATING OF ALUMINUM OXIDE, RINSING THE ANODIZED ALUMINUM IN ROOM TEMPERATURE WATER, THEREAFTER IMMERSING IT FOR SEVERAL MINUTES IN A SEALING AND BONDING SOLUTION MAINTAINED AT ABOUT 180-195*F. AND A PH OF ABOUT 2.5 TO 3.7; SAID SEALING AND BONDING SOLUTION COMPRISING HIGH PURITY WATER TO WHICH HAS BEEN ADDED ABOUT 50 TO 200 P.P.M. OF CHROMIC ACID (CHROMIUM TRIOXIDE), AND THEREAFTER DRYING THE TREATED ALUMINUM.
References Cited (Backward Citations)
US1946151A
Cited
US3032435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |