US2830169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spot or seam welding of molybdenum and tungsten by means of rhenium interlayers
Assignee: Individual
•
Filing: 1956-08-08
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Granted: 1958-04-08
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Expires: 1976-08-08
Abstract
No abstract record available.
Inventors
- 👤 Gustav K Medicus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:12
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/16; B23K11/18; B23K35/00; B23K35/001; B23K35/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
IN AN ELECTRIC RESISTANCE WELDING PROCESS SUCH AS SPOT OR SEAM WELDING FOR JOINING MOLYBDENUM AND TUNGSTEN SHEETS FOR HIGH TEMPERATURE USE, THE IMPROVED STEP OF USING RHENIUM INTERLAYERS BETWEEN THE SHEETS IN THE WELDING PROCESS TO BOND THE SHEETS TOGETHER.
Claim 2
Dependent Claim
41 words
IN AN ELECTRIC RESISTANCE WELDING PROCESS SUCH AS SPOT OR SEAM WELDING FOR JOINING MOLYBDENUM AND TUNGSTEN SHEETS FOR HIGH TEMPERATURE USE, THE IMPROVED STEP OF USING RHENIUM INTERLAYERS BETWEEN THE SHEETS IN THE WELDING PROCESS TO BOND THE SHEETS TOGETHER.
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) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |