US2945778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of aluminum and composition therefor
Assignee: Lord Manufacturing Co
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Filing: 1957-03-07
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Granted: 1960-07-19
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Expires: 1977-03-07
Abstract
No abstract record available.
Inventors
- 👤 Richard J Lipinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:08
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/38; H05K3/382; H05K3/385; B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/48; C23C22/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
THE METHOD OF IMPROVING THE BONDABILITY OF AN ALUMINUM SURFACE TO ORGANIC POLYMERIC MATERIAL WHICH COMPRISES CONSISTING SAID SURFACE WITH A SOLUTION, AT A PH BELOW 4, CONSISTING ESSENTIALLY OF A NITROSULFONIC ACID UNTIL SAID ALUMINUM SURFACE IS VISIBLY ALTERED THROUGH FORMATION OF A FILM THEREON, AND RECOVERING THE ALUMINUM WITH SAID FILM ON THE SURFACE THEREOF.
Claim 2
Independent Claim
57 words
THE METHOD OF IMPROVING THE BONDABILITY OF AN ALUMINUM SURFACE TO ORGANIC POLYMERIC MATERIAL WHICH COMPRISES CONSISTING SAID SURFACE WITH A SOLUTION, AT A PH BELOW 4, CONSISTING ESSENTIALLY OF A NITROSULFONIC ACID UNTIL SAID ALUMINUM SURFACE IS VISIBLY ALTERED THROUGH FORMATION OF A FILM THEREON, AND RECOVERING THE ALUMINUM WITH SAID FILM ON THE SURFACE THEREOF.
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) | 1963-07-19 | 1964-01-18 | 1964-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-19 | 1968-01-18 | 1968-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-19 | 1972-01-18 | 1972-07-19 | $7700.00 | Window Closed / Lapsed |