US2869267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of etching aluminum and aluminum alloys
Assignee: Turco Products Inc
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Filing: 1957-02-28
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Granted: 1959-01-20
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Expires: 1977-02-28
Abstract
No abstract record available.
Inventors
- 👤 Emmette R Holman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:29
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/32; C23F1/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A PROCESS FOR PRODUCING A CHEMICALLY ETCHED SURFACE ON AN ALUMINUM ARTICLE, WHICH COMPRISES TREATING SAID ARTICLE IN AN ALKALINE ETCHING BATH CONTAINING AS ESSENTIAL ACTIVE INGREDIENTS AN ALKALI METAL HYDROXIDE AND TRIETHANOLAMINE.
Claim 2
Dependent Claim
33 words
A PROCESS FOR PRODUCING A CHEMICALLY ETCHED SURFACE ON AN ALUMINUM ARTICLE, WHICH COMPRISES TREATING SAID ARTICLE IN AN ALKALINE ETCHING BATH CONTAINING AS ESSENTIAL ACTIVE INGREDIENTS AN ALKALI METAL HYDROXIDE AND TRIETHANOLAMINE.
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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |