US3843333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum brazing sheet
Assignee: Kaiser Aluminum and Chemical Corp
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Filing: 1973-08-31
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Granted: 1974-10-22
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Expires: 1993-08-31
Abstract
Abstract 1. A CLAD ALUMINUM BRAZING SHEET COMPRISING A RELATIVELY HIGH MELTING POINT ALUMINUM ALLOY CORE AND CLAD TO SAID CORE A RELATIVELY LOW MELTING POINT ALUMINUM ALLOY CONSISTING ESSENTIALLY OF 5-13% SILICON, UP TO 3% MAGNESIUM, 0.8% MAXIMUM IRON, 0.25% MAXIMUM MANGANESE, 0.25% MAXIMUM COPPER, 0.20% MAXIMUM ZINC, 0.10% MAXIMUM OTHER ELEMENTS EACH AND THE BALANCE ALUMINUM, SAID LOW MELTING POINT ALLOY CLADDING CHARACTERIZED BY SUBSTANTIALLY ALL OF THE SILICON PARTICLES BEING LESS THAN 7 MICRONS IN MAXIMUM DIMENSION AND A MAJORITY OF THE SILICON EXISTING AS PARTICLES FROM ABOUT 0.5 TO 5.0 MICRONS IN MAXIMUM DIMENSION.
Inventors
- 👤 R Woods
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:19
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/28; B23K35/286; B23K1/00; B23K1/19; B23K35/001; B23K35/002; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/925; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12493; Y10T428/12736; Y10T428/12764
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A CLAD ALUMINUM BRAZING SHEET COMPRISING A RELATIVELY HIGH MELTING POINT ALUMINUM ALLOY CORE AND CLAD TO SAID CORE A RELATIVELY LOW MELTING POINT ALUMINUM ALLOY CONSISTING ESSENTIALLY OF 5-13% SILICON, UP TO 3% MAGNESIUM, 0.8% MAXIMUM IRON, 0.25% MAXIMUM MANGANESE, 0.25% MAXIMUM COPPER, 0.20% MAXIMUM ZINC, 0.10% MAXIMUM OTHER ELEMENTS EACH AND THE BALANCE ALUMINUM, SAID LOW MELTING POINT ALLOY CLADDING CHARACTERIZED BY SUBSTANTIALLY ALL OF THE SILICON PARTICLES BEING LESS THAN 7 MICRONS IN MAXIMUM DIMENSION AND A MAJORITY OF THE SILICON EXISTING AS PARTICLES FROM ABOUT 0.5 TO 5.0 MICRONS IN MAXIMUM DIMENSION.
Claim 2
Dependent Claim
96 words
A CLAD ALUMINUM BRAZING SHEET COMPRISING A RELATIVELY HIGH MELTING POINT ALUMINUM ALLOY CORE AND CLAD TO SAID CORE A RELATIVELY LOW MELTING POINT ALUMINUM ALLOY CONSISTING ESSENTIALLY OF 5-13% SILICON, UP TO 3% MAGNESIUM, 0.8% MAXIMUM IRON, 0.25% MAXIMUM MANGANESE, 0.25% MAXIMUM COPPER, 0.20% MAXIMUM ZINC, 0.10% MAXIMUM OTHER ELEMENTS EACH AND THE BALANCE ALUMINUM, SAID LOW MELTING POINT ALLOY CLADDING CHARACTERIZED BY SUBSTANTIALLY ALL OF THE SILICON PARTICLES BEING LESS THAN 7 MICRONS IN MAXIMUM DIMENSION AND A MAJORITY OF THE SILICON EXISTING AS PARTICLES FROM ABOUT 0.5 TO 5.0 MICRONS IN MAXIMUM DIMENSION.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |