US2999799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroplating of niobium
Assignee: GTE Sylvania Inc
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Filing: 1958-06-26
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Granted: 1961-09-12
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Expires: 1978-06-26
Abstract
No abstract record available.
Inventors
- 👤 Edward B Saubestre
- 👤 Edward P Bulan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:17
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A METHOD FOR CLADDING A NIOBIUM SUBSTRATE COMPRISING THE STEPS OF CONNECTING SAID SUBSTRATE AS THE ANODE IN AN ELECTROLYTIC CELL CONTAINING AN ELECTROLYTE OF APPROXIMATELY 10% CONCENTRATION BY WEIGHT OF SODIUM HYDROXIDE IN AQUEOUS SOLUTION, APPLYING A VOLTAGE ACROSS THE ANODE-SOLUTION INTERFACE UNTIL A YELLOW FILM OF NIOBIUM OXIDE IS FORMED ON A SURFACE OF SAID SUBSTRATE, ELECTROLYTICALLY DEPOSITING A FIRST COATING OF NICKEL OVER SAID FILM, ELECTROLYTICALLY DEPOSITING A SECOND COATING OF A METAL SELECTED FROM THE CLASS CONSISTING OF NICKEL AND IRON OVER THE NICKEL COATED SUBSTRATE, AND HEATING THE RESULTANT STRUCTURE TO RED HEAT TO BOND SAID COATINGS TO SAID SUBSTRATE.
Claim 2
Independent Claim
105 words
A METHOD FOR CLADDING A NIOBIUM SUBSTRATE COMPRISING THE STEPS OF CONNECTING SAID SUBSTRATE AS THE ANODE IN AN ELECTROLYTIC CELL CONTAINING AN ELECTROLYTE OF APPROXIMATELY 10% CONCENTRATION BY WEIGHT OF SODIUM HYDROXIDE IN AQUEOUS SOLUTION, APPLYING A VOLTAGE ACROSS THE ANODE-SOLUTION INTERFACE UNTIL A YELLOW FILM OF NIOBIUM OXIDE IS FORMED ON A SURFACE OF SAID SUBSTRATE, ELECTROLYTICALLY DEPOSITING A FIRST COATING OF NICKEL OVER SAID FILM, ELECTROLYTICALLY DEPOSITING A SECOND COATING OF A METAL SELECTED FROM THE CLASS CONSISTING OF NICKEL AND IRON OVER THE NICKEL COATED SUBSTRATE, AND HEATING THE RESULTANT STRUCTURE TO RED HEAT TO BOND SAID COATINGS TO SAID SUBSTRATE.
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) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |