Patent US2879211A successfully refreshed from Google Patents.
US2879211A
Expired / Lapsed
US
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Electroplating duplex nickel coatings
Assignee: Hanson Van Winkle Munning Co
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Filing: 1956-11-16
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Granted: 1959-03-24
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Expires: 1976-11-16
Abstract
No abstract record available.
Inventors
- 👤 Kardos Otto
- 👤 Neumann Robert Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:43
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/10; C25D5/12; C25D5/14; C25D5/60; C25D5/615; C25D5/617; C25D5/627
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
THE METHOD OF PRODUCING A NICKEL ELECTOPLATE OF DUPLEX STRUCTURE HAVING ENHANCED CAPABILITY OF PROTECTING UNDERLYING METAL FROM CORROSION WHICH COMPRISES ESTABLISHING A SUBSTANTIALLY UNAGITATED AQUEOUS NICKEL ELECTROPLATING BATH IN WHICH A BRIGHTENING ADDITION AGENT IS INCORPORATED, INTRODUCING AN ARTICLE TO BE ELECTROPLATED INTO THE UNAGITATED BATHE, SAID BATH BEING SUBSTANTIALLY QUIESCENT IN THE VICINITY OF SAID ARTICLE, AND ELECTRODEPOSITING NICKEL OF A GENERALLY COLUMNAR, FIBROUS MICROSTRUCTURE UNTIL A SUBSTANTIALLY NICKEL ELECTROPLATE HAS FORMED ON THE ARTICLE, AND THEREAFTER, WITHOUT WITHDRAWING SAID ARTICLE FROM THE BATH AND WITHOUT DISCONTINUING THE DEPOSITION OF NICKEL THEREON, SUBJECTING SAID BATH IN THE VICINITY OF THE ARTICLE TO VIGOROUS AGITATION UNTIL A FURTHER SUBSTANTIAL AMOUNT OF NICKEL OF A LAMELLAR MICROSTRUCTURE HAS BEEN ELECTROPLATED ON SAID ARTICLE.
Claim 2
Independent Claim
123 words
THE METHOD OF PRODUCING A NICKEL ELECTOPLATE OF DUPLEX STRUCTURE HAVING ENHANCED CAPABILITY OF PROTECTING UNDERLYING METAL FROM CORROSION WHICH COMPRISES ESTABLISHING A SUBSTANTIALLY UNAGITATED AQUEOUS NICKEL ELECTROPLATING BATH IN WHICH A BRIGHTENING ADDITION AGENT IS INCORPORATED, INTRODUCING AN ARTICLE TO BE ELECTROPLATED INTO THE UNAGITATED BATHE, SAID BATH BEING SUBSTANTIALLY QUIESCENT IN THE VICINITY OF SAID ARTICLE, AND ELECTRODEPOSITING NICKEL OF A GENERALLY COLUMNAR, FIBROUS MICROSTRUCTURE UNTIL A SUBSTANTIALLY NICKEL ELECTROPLATE HAS FORMED ON THE ARTICLE, AND THEREAFTER, WITHOUT WITHDRAWING SAID ARTICLE FROM THE BATH AND WITHOUT DISCONTINUING THE DEPOSITION OF NICKEL THEREON, SUBJECTING SAID BATH IN THE VICINITY OF THE ARTICLE TO VIGOROUS AGITATION UNTIL A FURTHER SUBSTANTIAL AMOUNT OF NICKEL OF A LAMELLAR MICROSTRUCTURE HAS BEEN ELECTROPLATED ON SAID ARTICLE.
References Cited (Backward Citations)
US2312517A
Cited
US2712522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-23 | 1962-09-22 | 1963-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-23 | 1966-09-22 | 1967-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-23 | 1970-09-22 | 1971-03-24 | $7700.00 | Window Closed / Lapsed |