Patent US3314867A successfully refreshed from Google Patents.
US3314867A
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Method of etching tantalum and niobium for electroplating
Assignee: Individual
•
Filing: 1963-11-01
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Granted: 1967-04-18
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Expires: 1983-11-01
Abstract
No abstract record available.
Inventors
- 👤 James K Gore
- 👤 Seegmiller Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:24
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/38; C25F; C25F3/00; C25F3/02; C25F3/08; H; H05; H05H; H05H6/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A METHOD FOR ELECTRODEPOSITING AN ADHERENT METALLIC FILM ON A METAL SELECTED FROM THE CLASS CONSISTING OF TANTALUM AND NIOBIUM COMPRISING THE SEPS OF MAKING THE SAID METAL ANODIC IN A METHYL ALCOHOL BATH CONSISTING ESSENTIALLY OF APPROXIMATELY EQUAL AMOUNTS OF CONCENTRATED HYDROFLUORIC AND CONCENTRATED HYDROCHLORIC ACIDS, THE CONCENTRATION OF EACH OF SAID ACIDS RANGING BETWEEN 1.0-10.0 VOLUME PERCENT, THE TEMPERATURE OF SAID BATH RANGING BETWEEN 15-65*C., AND THE CURRENT DENSITY OF THE SAID METAL RANGING BETWEEN 0.05-0.50 AMP PER SQUARE INCH AND ELECTRODEPOSITING ANY DESIRED METAL AS A FILM ON THE ETCHED SURFACE OF THE SAID METAL.
Claim 2
Independent Claim
98 words
A METHOD FOR ELECTRODEPOSITING AN ADHERENT METALLIC FILM ON A METAL SELECTED FROM THE CLASS CONSISTING OF TANTALUM AND NIOBIUM COMPRISING THE SEPS OF MAKING THE SAID METAL ANODIC IN A METHYL ALCOHOL BATH CONSISTING ESSENTIALLY OF APPROXIMATELY EQUAL AMOUNTS OF CONCENTRATED HYDROFLUORIC AND CONCENTRATED HYDROCHLORIC ACIDS, THE CONCENTRATION OF EACH OF SAID ACIDS RANGING BETWEEN 1.0-10.0 VOLUME PERCENT, THE TEMPERATURE OF SAID BATH RANGING BETWEEN 15-65*C., AND THE CURRENT DENSITY OF THE SAID METAL RANGING BETWEEN 0.05-0.50 AMP PER SQUARE INCH AND ELECTRODEPOSITING ANY DESIRED METAL AS A FILM ON THE ETCHED SURFACE OF THE SAID METAL.
References Cited (Backward Citations)
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Cited
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US2728719A
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Cited
US3190822A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |