US2743205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and process for treating metal surfaces
Assignee: Westinghouse Electric Corp
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Filing: 1954-10-14
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Granted: 1956-04-24
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Expires: 1974-10-14
Abstract
No abstract record available.
Inventors
- 👤 James W Condon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:55
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/78; C23C22/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
AN AQUEOUS SOLUTION FOR TREATING METAL SURFACES IN ORDER TO RENDER THEM MORE ACTIVE IN THE SUBSEQUENT FORMATION OF PHOSPHAE COATINGS THEREON, COMPRISING AS ITS ESSENTIAL COMPONENTS, FROM 0.001% TO 0.6% BY WEIGHT OF LITHIUM PRESENT AS A COMPOUND THEREOF AND AT LEAST 0.0004% BY WEIGHT OF PO4 PRESENT AS AN ALKALI ORTHOPHOSPHATE, THERE BEING PRESENT FROM 1 TO 125 PARTS OF LITHIUM FOR EACH 50 PARTS BY WEIGHT OF PO4, THE LITHIUM COMPOUND AND ALKALI ORTHOPHOSPHATE HAVING BEEN PREVIOUSLY DISSOLVED IN WATER AND EVAPORATED TO DRYNESS.
Claim 2
Dependent Claim
87 words
AN AQUEOUS SOLUTION FOR TREATING METAL SURFACES IN ORDER TO RENDER THEM MORE ACTIVE IN THE SUBSEQUENT FORMATION OF PHOSPHAE COATINGS THEREON, COMPRISING AS ITS ESSENTIAL COMPONENTS, FROM 0.001% TO 0.6% BY WEIGHT OF LITHIUM PRESENT AS A COMPOUND THEREOF AND AT LEAST 0.0004% BY WEIGHT OF PO4 PRESENT AS AN ALKALI ORTHOPHOSPHATE, THERE BEING PRESENT FROM 1 TO 125 PARTS OF LITHIUM FOR EACH 50 PARTS BY WEIGHT OF PO4, THE LITHIUM COMPOUND AND ALKALI ORTHOPHOSPHATE HAVING BEEN PREVIOUSLY DISSOLVED IN WATER AND EVAPORATED TO DRYNESS.
References Cited (Backward Citations)
US2329065A
Cited
US2462196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |