US2658981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding beryllium and beryllium alloys
Assignee: Individual
•
Filing: 1950-08-08
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Granted: 1953-11-10
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Expires: 1970-08-08
Abstract
No abstract record available.
Inventors
- 👤 David C Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:35
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/38; B23K35/383
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
45 words
A PROCESS OF WELDING BERYLLIUM-BASE METALS COMPRISING WELDING SAID METALS USING A SHIELD GAS CONSISTING OF FROM 95 TO 99.5% BY VOLUME OF A NOBLE GAS AND FROM 5 TO 0.5% BY VOLUME OF A FLUOROCHLOROHYDROCARBON SELECTED FROM THE GROUP CONSISTING OF FLUOROCHLOROMETHANES AND FLUOROCHLOROETHANES.
Claim 2
Dependent Claim
45 words
A PROCESS OF WELDING BERYLLIUM-BASE METALS COMPRISING WELDING SAID METALS USING A SHIELD GAS CONSISTING OF FROM 95 TO 99.5% BY VOLUME OF A NOBLE GAS AND FROM 5 TO 0.5% BY VOLUME OF A FLUOROCHLOROHYDROCARBON SELECTED FROM THE GROUP CONSISTING OF FLUOROCHLOROMETHANES AND FLUOROCHLOROETHANES.
Claim 3
Dependent Claim
44 words
AS A NEW COMPOSITION OF MATTER, A SHIELD GAS FOR WELDING BERYLLIUM-BASE METALS CONSISTING OF FROM 95 TO 99.5% BY VOLUME OF A NOBLE GAS AND FROM 5 TO 0.5% BY VOLUME OF A FLUOROCHLOROHYDROCARBON SELECTED FROM THE GROUP CONSISTING OF FLUOROCHLOROMETHANES AND FLUOROCHLOROETHANES.
Claim 4
Dependent Claim
44 words
AS A NEW COMPOSITION OF MATTER, A SHIELD GAS FOR WELDING BERYLLIUM-BASE METALS CONSISTING OF FROM 95 TO 99.5% BY VOLUME OF A NOBLE GAS AND FROM 5 TO 0.5% BY VOLUME OF A FLUOROCHLOROHYDROCARBON SELECTED FROM THE GROUP CONSISTING OF FLUOROCHLOROMETHANES AND FLUOROCHLOROETHANES.
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) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |