US2856509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Argon shielded arc welding
Assignee: Union Carbide Corp
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Filing: 1953-07-10
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Granted: 1958-10-14
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Expires: 1973-07-10
Abstract
No abstract record available.
Inventors
- 👤 Frank T Stanchus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:03
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/16; B23K9/173
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN THE ART OF INERT GAS SHIELDED ARC WELDING OF ALUMINUM AND ITS ALLOYS, THE IMPROVEMENTS WHICH COMPRISES SHIELDING THE ARC WITH ARGON OF AT LEAST 99.99% PURITY HAVING AN IMPURITY CONTENT OF 3 TO 50 P. P. M. NITROGEN, THE BALANCE OF SUCH IMPURITY CONTENT COMPRISING HYDROCARBONS, HYDROGEN, OXYGEN AND MOISTURE, WHILE EXCLUDING ALL AIR FROM THE ARC BY THE SHIELDING GAS, WHEREBY A SUBSTANTIAL INCREASE IN WELDING SPEED AND WELD QUALITY IS OBTAINED.
Claim 2
Dependent Claim
75 words
IN THE ART OF INERT GAS SHIELDED ARC WELDING OF ALUMINUM AND ITS ALLOYS, THE IMPROVEMENTS WHICH COMPRISES SHIELDING THE ARC WITH ARGON OF AT LEAST 99.99% PURITY HAVING AN IMPURITY CONTENT OF 3 TO 50 P. P. M. NITROGEN, THE BALANCE OF SUCH IMPURITY CONTENT COMPRISING HYDROCARBONS, HYDROGEN, OXYGEN AND MOISTURE, WHILE EXCLUDING ALL AIR FROM THE ARC BY THE SHIELDING GAS, WHEREBY A SUBSTANTIAL INCREASE IN WELDING SPEED AND WELD QUALITY IS OBTAINED.
References Cited (Backward Citations)
US2504868A
Cited
US2576793A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-13 | 1962-04-14 | 1962-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-13 | 1966-04-14 | 1966-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-13 | 1970-04-14 | 1970-10-14 | $7700.00 | Window Closed / Lapsed |