US2728718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum coating
Assignee: Battelle Development Corp
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Filing: 1951-11-02
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Granted: 1955-12-27
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Expires: 1971-11-02
Abstract
No abstract record available.
Inventors
- 👤 William C Schickner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:07
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/42; C25D3/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
114 words
THE METHOD OF ELECTROFORMING AN ALUMINUM ARTICLE WHICH COMPRISES THE STEPS OF FORMING AN ELECTRICALLY CONDUCTIVE BASE IN A DESIRED CONFIGURATION, IMMERSING SAID ARTICLE IN A BATH, SAID BATH COMPRISING A SOLUTION OF A LIQUID AROMATIC HYDROCARBON SOLVENT IN WHICH IS DISSOLVED A FUSION OF AN ALUMINUM HALIDE AND A QUATERNARY SALT OF NITROGEN, SAID SOLVENT BEING PRESENT IN SUFFICIENT QUANTITY TO FORM A LAYER OF EXCESS SOLVENT, CONTINUOUSLY DISPERSING SAID EXCESS SOLVENT THROUGHOUT THE BATH, PASSING AN ELECTRIC CURRENT BETWEEN AN ALUMINUM ANODE AND SAID CONDUCTIVE BASE AS A CATHODE UNTIL AND ALUMINUM COATING IS DEPOSITED THEREON, REMOVING SAID COATED BASE FROM THE BATH, AND SEPARATING SAID CONDUCTIVE BASE FROM SAID ALUMINUM COATING.
References Cited (Backward Citations)
US1854684A
Cited
US2446349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |