Patent US2937438A successfully refreshed from Google Patents.
US2937438A
Expired / Lapsed
US
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Method for joining aluminum to stainless steel
Assignee: Individual
•
Filing: 1958-07-14
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Granted: 1960-05-24
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Expires: 1978-07-14
Abstract
No abstract record available.
Inventors
- 👤 Lloyd C Lemon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:37
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/26; B23K35/262; B23K35/001; B23K35/002; B23K35/004; B32; B32B; B32B15/00; B32B15/01; B32B15/012
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
A METHOD FOR JOINING ALUMINUM TO STAINLESS STEEL COMPRISING ABRADING SAID ALUMINUM, CHEMICALLY CLEANING SAID ALUMINUM, HEATING A PORTION OF SAID ALUMINUM, TINING SAID HEATED PORTION WITH A SOLDER CONSISTING ESSENTIALLY OF 1% SILVER, 1% LEAD, AND THE BALANCE TIN, ABRADING SAID STAINLESS STEEL, CHEMICALLY CLEANING SAID STAINLESS STEEL, HEATING PORTION OF SAID STAINLESS STEEL, TINNING SAID HEATED PORTION WITH A TIN-LEAD SOLDER, CONTACTING SAID ALUMINUM AND STAINLESS STEEL AT THE PORTIONS SO TINNED, AND HEATING SAID ALUMINUM AND STAINLESS STEEL WHILE SO CONTACTED TO BETWEEN 500-600*F.
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) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |