Patent US2811484A successfully refreshed from Google Patents.
US2811484A
Expired / Lapsed
US
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Electrodeposition of zinc on magnesium and its alloys
Assignee: Dow Chemical Co
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Filing: 1956-06-20
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Granted: 1957-10-29
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Expires: 1976-06-20
Abstract
No abstract record available.
Inventors
- 👤 Long Herbert K De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:32
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/42; C25D3/00; C25D3/02; C25D3/22; C25D5/10; C25D5/12; C25D5/14; C25D5/60; C25D5/605; C25D5/611; C25D5/627
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
THE METHOD OF ZINC-PLATING AN ARTICLE COMPOSED OF AT LEAST 85 PERCENT MAGNESIUM WHICH COMPRISES MAKING THE ARTICLE TO BE PLATED THE CATHODE IN AN AQUEOUS ELECTROPLATING SOLUTION HAVING A PH BETWEEN 10.2 AND 10.8 AT A TEMPERATURE BETWEEN 70* AND 190*F., SAID SOLUTION CONTAINING PER LITER A PYROPHOSPHATE OF AN ALKALI OF WHICH THE PYROPHOSPHATE FRACTION COMPRISES FROM 40 TO 310 GRAMS, A ZINC SALT OF WHICH THE ZINC FRACTION COMPRISES FROM 4.3 TO 19.35 GRAMS, A FLUORIDE OF AN ALKALI OF WHICH THE FLUORIDE FRACTION COMPRISES FROM 2.5 TO 6.5 GRAMS, AND A SULFATE OF AN ALKALI OF WHICH THE SULFATE FRACTION COMPRISES FROM 2 TO 47 GRAMS.
Claim 2
Independent Claim
110 words
THE METHOD OF ZINC-PLATING AN ARTICLE COMPOSED OF AT LEAST 85 PERCENT MAGNESIUM WHICH COMPRISES MAKING THE ARTICLE TO BE PLATED THE CATHODE IN AN AQUEOUS ELECTROPLATING SOLUTION HAVING A PH BETWEEN 10.2 AND 10.8 AT A TEMPERATURE BETWEEN 70* AND 190*F., SAID SOLUTION CONTAINING PER LITER A PYROPHOSPHATE OF AN ALKALI OF WHICH THE PYROPHOSPHATE FRACTION COMPRISES FROM 40 TO 310 GRAMS, A ZINC SALT OF WHICH THE ZINC FRACTION COMPRISES FROM 4.3 TO 19.35 GRAMS, A FLUORIDE OF AN ALKALI OF WHICH THE FLUORIDE FRACTION COMPRISES FROM 2.5 TO 6.5 GRAMS, AND A SULFATE OF AN ALKALI OF WHICH THE SULFATE FRACTION COMPRISES FROM 2 TO 47 GRAMS.
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) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |