US2958756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-shielded metal-arc welding
Assignee: Union Carbide Corp
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Filing: 1954-01-13
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Granted: 1960-11-01
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Expires: 1974-01-13
Abstract
No abstract record available.
Inventors
- 👤 Donald M Yenni
- 👤 Kenneth L Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:45
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/16; B23K9/173; B23K35/00; B23K35/22; B23K35/38; B23K35/383
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A SHIELDING GAS FOR DIRECT CURRENT STRAIGHT POLARITY SIGMA WELDING OF METAL SELECTED FROM THE CLASS CONSISTING OF CARBON STEEL AND STAINLESS STEEL, COMPOSED OF A RELATIVELY DRY MIXTURE CONTAINING 70% HELIUM, 25% ARGON AND 5% OXYGEN.
Claim 2
Dependent Claim
37 words
A SHIELDING GAS FOR DIRECT CURRENT STRAIGHT POLARITY SIGMA WELDING OF METAL SELECTED FROM THE CLASS CONSISTING OF CARBON STEEL AND STAINLESS STEEL, COMPOSED OF A RELATIVELY DRY MIXTURE CONTAINING 70% HELIUM, 25% ARGON AND 5% OXYGEN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |