US2653860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Etching aluminum using saccharic acid as a modifier
Assignee: MacDermid Enthone Inc
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Filing: 1953-03-09
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Granted: 1953-09-29
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Expires: 1973-03-09
Abstract
No abstract record available.
Inventors
- 👤 Walter R Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:06
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/32; C23F1/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
AN ALUMINUM-ETCHING SOLUTION CONSISTING OF WATER AND FROM 0.5% TO 35% BY WEIGHT OF THE COMPOSITION OF CLAIM 1.
Claim 2
Dependent Claim
57 words
THE PROCESS OF ETCHING A METAL ARTICLE CONSISTING PRINCIPALLY OF ALUMINUM WHICH INCLUDES THE STEPS OF CLEANING THE ARTICLE, PREPARING THE SOLUTION OF CLAIM 6, HEATING SAID SOLUTION TO A TEMPERATURE BETWEEN 60* AND 190* F., SUBJECTING THE ARTICLE TO SAID SOLUTION FOR A PERIOD FROM 5 TO 3600 SECONDS, AND RINSING RESIDUAL SOLUTION FROM THE ARTICLE.
References Cited (Backward Citations)
US2168909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |