US2730490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of zinc coating magnesium articles
Assignee: Wire Coating and Manuf Co
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Filing: 1951-11-13
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Granted: 1956-01-10
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Expires: 1971-11-13
Abstract
No abstract record available.
Inventors
- 👤 Robert T Hendrich
- 👤 Jr Dudley L O'brien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:16
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE PROCESS OF MAKING A BI-METAL PLATE CONSISTING OF A MAGNESIUM BASE PLATE HAVING A SURFACE COATED WITH A SMOOTH THIN CONTINUOUS ADHERENT COATING OF ZINC WHICH COMPRISES CHEMICALLY DEPOSITING A SUPERFICIAL UNIFORMLY DISCONTINUOUS LAYER OF ZINC ONTO THE THOROUGHLY CLEANED SURFACE OF A MAGNESIUM PLATE BY CONTACTING SAID CLEANED SURFACE WITH AN AQUEOUS ALKALINE SOLUTION COMPRISING ZINC IONS HAVING ION EXCHANGE WITH THE MAGNESIUM PLATE AND THEN DIRECTLY UPON SUCH CHEMICALLY DEPOSITED ZINC, ELECTRODEPOSITING FROM A CYANIDE BATH A CONTINUOUS LAYER OF ZINC HAVING A THICKNESS OF NOT OVER ABOUT .0008 INCH.
Claim 2
Dependent Claim
93 words
THE PROCESS OF MAKING A BI-METAL PLATE CONSISTING OF A MAGNESIUM BASE PLATE HAVING A SURFACE COATED WITH A SMOOTH THIN CONTINUOUS ADHERENT COATING OF ZINC WHICH COMPRISES CHEMICALLY DEPOSITING A SUPERFICIAL UNIFORMLY DISCONTINUOUS LAYER OF ZINC ONTO THE THOROUGHLY CLEANED SURFACE OF A MAGNESIUM PLATE BY CONTACTING SAID CLEANED SURFACE WITH AN AQUEOUS ALKALINE SOLUTION COMPRISING ZINC IONS HAVING ION EXCHANGE WITH THE MAGNESIUM PLATE AND THEN DIRECTLY UPON SUCH CHEMICALLY DEPOSITED ZINC, ELECTRODEPOSITING FROM A CYANIDE BATH A CONTINUOUS LAYER OF ZINC HAVING A THICKNESS OF NOT OVER ABOUT .0008 INCH.
References Cited (Backward Citations)
US2511952A
Cited
US2428356A
Cited
US2443600A
Cited
US2526544A
Cited
US2580773A
Cited
US2704512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |