Patent US4341232A successfully refreshed from Google Patents.
US2931713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and material for etching aluminum
Assignee: Henkel Corp
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Filing: 1957-09-27
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Granted: 1960-04-05
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Expires: 1977-09-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Nelson J Newhard
- 👤 David Y Dollman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:25
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/32; C23F1/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A COMPOSITION FOR USE IN AQUEOUS SOLUTION AS AN ETCHANT BATH FOR ALUMINUM, SAID COMPOSITION CONSISTING ESSENTIALLY OF:
Claim 2
Dependent Claim
18 words
A COMPOSITION FOR USE IN AQUEOUS SOLUTION AS AN ETCHANT BATH FOR ALUMINUM, SAID COMPOSITION CONSISTING ESSENTIALLY OF:
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) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |