US2561065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for and process of removing metallic coatings
Assignee: MacDermid Enthone Inc
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Filing: 1949-04-15
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Granted: 1951-07-17
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Expires: 1969-04-15
Abstract
No abstract record available.
Inventors
- 👤 Walter R Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:42
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
PROCESS FOR SELECTIVELY DISSOLVING A COATING OF A METAL OF THE GROUP CONSISTING OF NICKEL, COPPER, ZINC, SILVER, AND CADMIUM FROM THE SURFACE OF A METAL OF A GROUP CONSISTING OF IRON, STEEL, AND CHROMIUM WHICH COMPRISES IMMERSING THE METAL OBJECT TO BE STRIPPED IN AN AQUEOUS SOLUTION OF THE FOLLOWING MATERIALS IN PROPORTIONS WITHIN THE INDICATED RANGES: ALKALI METAL CHLORITE, 5 GRAMS PER LITER TO SATURATION ALKALI METAL CYANIDE, 1 GRAM PER LITER TO SATURATION AT A TEMPERATURTE WITHIN THE RANGE OF ABOUT 70* TO 210* F.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |