US2710792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and process for treating aluminum and aluminum alloys preparatory to spot welding
Assignee: KELITE PRODUCTS Inc
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Filing: 1953-03-30
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Granted: 1955-06-14
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Expires: 1973-03-30
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 19:25
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3611; C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/16; C23F1/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A COMPOSITION FOR ETCHING ALUMINUM AND ALUMINUM ALLOYS PREPARATORY TO SPOT WELDING, SAID COMPOSITION COMPRISING, PHOSPHORIC ACID, A SEQUESTERING AGENT, AND AN ARYL SULFONIC ACID HAVING LESS THAN 7 ALKYL CARBON ATOMS.
Claim 2
Dependent Claim
32 words
A COMPOSITION FOR ETCHING ALUMINUM AND ALUMINUM ALLOYS PREPARATORY TO SPOT WELDING, SAID COMPOSITION COMPRISING, PHOSPHORIC ACID, A SEQUESTERING AGENT, AND AN ARYL SULFONIC ACID HAVING LESS THAN 7 ALKYL CARBON ATOMS.
References Cited (Backward Citations)
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-13 | 1958-12-13 | 1959-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-13 | 1962-12-13 | 1963-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-13 | 1966-12-13 | 1967-06-14 | $7700.00 | Window Closed / Lapsed |