US2831760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material for welding aluminum and other metals
Assignee: Erico International Corp
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Filing: 1955-12-20
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Granted: 1958-04-22
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Expires: 1975-12-20
Abstract
No abstract record available.
Inventors
- 👤 Melvin F Rejdak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:24
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/34; Y; Y10; Y10S; Y10S75/00; Y10S75/959
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
108 words
AN EXOTHERMIC REACTION MIXTURE FOR THE PRODUCTION OF HIGHLY HEATED MOLTEN WELD METAL COMPRISING TIN OXIDE, COPPER OXIDE, A REDUCING AGENT EFFECTIVE TO REDUCE SAID OXIDES TO PRODUCE A MOLTEN ALLOY OF TIN AND COPPER AND SUFFICIENT METAL POWDER SELECTED FROM THE CLASS CONSISTING OF TIN, ALUMINUM, NICKEL, SILVER, IRON AND CHROMIUM TO REGULATE THE REACTION TO PREVENT VIOLENT SPATTERING AND SUBSTANTIAL LOSS OF SUCH MOLTEN ALLOY AND TO REDUCE THE TEMPERATURE OF THE FINAL MOLTEN ALLOY TO A FIGURE NOT LESS THAN 2,000*F., THE TIN COMPRISING A MAJOR PROPORTION OF SUCH FINAL ALLOY AND THE COPPER COMPRISING FROM 2% TO 25% BY WEIGHT OF SUCH FINAL ALLOY.
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US1556402A
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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) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |