US2762694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of etching of aluminum and its alloys
Assignee: Turco Products Inc
•
Filing: 1954-07-22
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Granted: 1956-09-11
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Expires: 1974-07-22
Abstract
No abstract record available.
Inventors
- 👤 Newman Kenneth Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:21
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/02; C23F1/10; C23F1/14; C23F1/16; C23F1/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
A METHOD OF ETCHING AN ALUMINUM OBJECT WHICH COMPRISES: TREATING THE ALUMINUM WITH AN ALUMINUM NONCORROSIVE ACIDIC SOLUTION, THE TEMPERATURE AND ACID CONCENTRATION OF SAID TREATING SOLUTION BEING RELATED TO RENDER THE SOLUTION AN ACTIVE REAGENT FOR THE REMOVAL OF ALUMINUM OXIDE FROM SAID OBJECT AND SUBSTANTIALLY NON-CORROSIVE TO ALUMINUM, THE DURATION OF SAID TREATING BEING ONLY SUBSTANTIALLY FOR THE TIME REQUIRED TO REMOVE AN OXIDE COATING FROM SAID OBJECT; COATING A PORTION ONLY OF THE TREATED SURFACE OF THE OBJECT WITH AN ALKALI RESISTANT RESIN BASED COATING COMPOSITION FOR ALUMINUM; AND TREATING THE ALUMINUM OBJECT WITH AN ALKALINE ETCHING SOLUTION; THEREBY ETCHING SAID SURFACE TREATED WITH SAID ETCHING SOLUTION.
References Cited (Backward Citations)
US2472304A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |