Patent US2414107A successfully refreshed from Google Patents.
US2674523A
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Process and composition for treatment of magnesium prior to spot welding
Assignee: KELITE PRODUCTS Inc
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Filing: 1953-04-24
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Granted: 1954-04-06
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Expires: 1973-04-24
Abstract
No abstract record available.
Inventors
- 👤 Mcdonald Louis
- 👤 Alfred E Hawley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:29
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/12; B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
58 words
A PROCESS OF CLEANING MAGNESIUM PRIOR TO SPOT WELDING WHICH PROCESS COMPRISES, APPLYING TO THE SURFACE TO BE SPOT WELDED A VISCOUS ETCHING COMPOSITION, WHICH VISCOUS ETCHING COMPOSITION IS AN AQUEOUS COMPOSITION INCLUDING ESSENTIALLY POLYSTYRENE SULFONIC ACID AND ARYL SULFONIC ACID OF LESS THAN 4 ALKYL CARBON ATOMS, AND A WATER SOLUBLE ALIPHATIC HYDROXY CARBOXYLIC ACID SEQUESTERING AGENT.
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) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |