US3231503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ammoniacal aqueous solution containing sodium chlorite and used for dissolving metals
Assignee: MacDermid Inc
•
Filing: 1964-01-30
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Granted: 1966-01-25
•
Expires: 1984-01-30
Abstract
No abstract record available.
Inventors
- 👤 The Colonial Bank And Company
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:58
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A SOLUTION FOR DISSOLVING METALS OF THE CLASS CONSISTING OF COPPER, ZINC, BRASS, CADMIUM AND SILVER, WHICH CONSISTS ESSENTIALLY OF AN AMMONIACAL AQUEOUS SOLUTION OF SODIUM CHLORITE, WHEREIN SAID CHLORITE IS PERSENT IN AMOUNT FROM ABOUT 0.1 M./1. TO SATURATION AND SAID SOLUTION HAS A PH OF FROM 8 TO 13.
Claim 2
Dependent Claim
51 words
A SOLUTION FOR DISSOLVING METALS OF THE CLASS CONSISTING OF COPPER, ZINC, BRASS, CADMIUM AND SILVER, WHICH CONSISTS ESSENTIALLY OF AN AMMONIACAL AQUEOUS SOLUTION OF SODIUM CHLORITE, WHEREIN SAID CHLORITE IS PERSENT IN AMOUNT FROM ABOUT 0.1 M./1. TO SATURATION AND SAID SOLUTION HAS A PH OF FROM 8 TO 13.
References Cited (Backward Citations)
US1657666A
Cited
US1798607A
Cited
US1867527A
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US2457234A
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US2564549A
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US2581490A
Cited
US2588566A
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US2561065A
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US2673143A
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US2727818A
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US3150960A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |