US2681875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making an arc welding composition
Assignee: Lincoln Electric Co
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Filing: 1949-08-10
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Granted: 1954-06-22
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Expires: 1969-08-10
Abstract
No abstract record available.
Inventors
- 👤 Stringham Leonidas Keever
- 👤 Ashton Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:03
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/362
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
IN A METHOD OF MAKING A FLUX COMPOSITION SUITABLE FOR USE IN ARC WELDING, THE STEP WHICH COMPRISES HEATING, AN INTERMIXTURE OF DRY, FINELY GROUND WELDING FLUX INGREDIENTS TOGETHER WITH A RELATIVELY SMALL AMOUNT OF BINDER SELECTED FROM THE CLASS CONSISTING OF SODIUM CARBONATE, POTASSIUM CARBONATE, SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE, SUCH INGREDIENTS INCLUDING SILICA IN AN AMOUNT AVAILABLE FOR DRY REACTION WITH SUCH BINDER, TO THE TEMPERATURE OF SUCH REACTION WHEREBY A SILICATE OF THE CLASS OF SODIUM OR POTASSIUM IN INCIPIENT STATE OF SELECTIVE FUSION IS PRODUCED IN SITU AND SERVES TO AGGLOMERATE THE OTHER INGREDIENTS IN UNREACTED AND UNIFORMLY DISTRIBUTED CONDITION.
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US2150000A
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US2223230A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-06-21 | 1957-12-21 | 1958-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-21 | 1961-12-21 | 1962-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-21 | 1965-12-21 | 1966-06-22 | $7700.00 | Window Closed / Lapsed |