Patent US2759446A successfully refreshed from Google Patents.
US2759446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brazing mixture
Assignee: Motors Liquidation Co
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Filing: 1950-09-09
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Granted: 1956-08-21
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Expires: 1970-09-09
Abstract
No abstract record available.
Inventors
- 👤 Charles W Ewing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:23
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
A NON-CAKING READILY STORED DRY COPPER BRAZING POWDER MIXTURE CAPABLE OF BEING QUICKLY MIXED WITH WATER ONLY ON THE JOB IN SMALL AMOUNTS TO MAKE A COPPER BRAZING PASTE CAPABLE OF RETAINING ITS WATER SOLUBILITY UPON DRYING WHICH INCLUDES 85% TO 99.5% BY WEIGHT OF COPPER POWDER, 1/2% TO 5% BY WEIGHT OF AN ALKALI CARBOXY METHYL CELLULOSE, AND 0% TO 14% BY WEIGHT OF IRON OXIDE POWDER.
Claim 2
Dependent Claim
68 words
A NON-CAKING READILY STORED DRY COPPER BRAZING POWDER MIXTURE CAPABLE OF BEING QUICKLY MIXED WITH WATER ONLY ON THE JOB IN SMALL AMOUNTS TO MAKE A COPPER BRAZING PASTE CAPABLE OF RETAINING ITS WATER SOLUBILITY UPON DRYING WHICH INCLUDES 85% TO 99.5% BY WEIGHT OF COPPER POWDER, 1/2% TO 5% BY WEIGHT OF AN ALKALI CARBOXY METHYL CELLULOSE, AND 0% TO 14% BY WEIGHT OF IRON OXIDE POWDER.
Claim 3
Dependent Claim
70 words
A COPPER BRAZING PASTE CAPABLE OF RETAINING ITS WATER SOLUBILITY UPON DRYING WHICH INCLUDES 85% TO 99.5% BY WEIGHT OF METAL POWDER HAVING A SUBSTANTIALY COPPER CONTENT, 1/2% TO 5% BY WEIGHT OF AN ALKALI CARBOXY METHYL CELLULOSE, 0% TO 14% OF A POWDER HAVING A SUBSTANTIAL IRON CONTENT ALL CALCULATED UPON AN ANHYDROUS BASIS, AND WATER IN THE AMOUNT OF 10% TO 60% BY WEIGHT OF THE ABOVE MATERIALS.
Claim 4
Dependent Claim
70 words
A COPPER BRAZING PASTE CAPABLE OF RETAINING ITS WATER SOLUBILITY UPON DRYING WHICH INCLUDES 85% TO 99.5% BY WEIGHT OF METAL POWDER HAVING A SUBSTANTIALY COPPER CONTENT, 1/2% TO 5% BY WEIGHT OF AN ALKALI CARBOXY METHYL CELLULOSE, 0% TO 14% OF A POWDER HAVING A SUBSTANTIAL IRON CONTENT ALL CALCULATED UPON AN ANHYDROUS BASIS, AND WATER IN THE AMOUNT OF 10% TO 60% BY WEIGHT OF THE ABOVE MATERIALS.
References Cited (Backward Citations)
US841151A
Cited
US2288200A
Cited
US2591994A
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US2583036A
Cited
US2550174A
Cited
US2507751A
Cited
US2606132A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-21 | 1960-02-20 | 1960-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-21 | 1964-02-20 | 1964-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-21 | 1968-02-20 | 1968-08-21 | $7700.00 | Window Closed / Lapsed |