US2683114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of antimony
Assignee: Harshaw Chemical Co
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Filing: 1952-12-04
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Granted: 1954-07-06
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Expires: 1972-12-04
Abstract
No abstract record available.
Inventors
- 👤 John D Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:01
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/54
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
141 words
A PROCESS FOR ELECTRODEPOSITION OF AN ADHERENT, LUSTROUS COATING OF ANTIMONY ON SURFACES OF THE CLASS CONSISTING OF LEAD, TIN, SILVER, ALLOYS OF A PLURALITY THEREOF AND ROUGH STEEL, COMPRISING ELECTROLYZING BETWEEN AN ANODE AND A CATHODE OF SAID CLASS AN AQUEOUS, ACID SOLUTION CONTAINING AN ANTIMONY COMPOUND AFFORDING A SOURCE OF ANTIMONY IONS AND MEANS FOR ADDJUSTING THE PH OF SAID SOLUTION TO FROM 2.5 TO 5.0, SAID SOLUTION ALSO CONTAINING COOPERATING ADHERENCE PROMOTING AND BRIGHTENING ADDITION AGENTS ONE THEREOF BEING OF THE CLASS CONSISTING OF BENZENE SULFONAMIDE, DI-BENZENE SULFONAMIDE ETHER, AND FONAMIDE, DI-BENZENE SULFONAMIDE ETHER, AND TOLUENE SULFONAMIDE AND BEING PRESENT IN SOLUTION IN CONCENTRATION FROM 0.5 TO 6 GRAMS PER LITER, AND THE OTHER THEREOF BEING OF THE CLASS CONSISTING OF DIPHENYL GUANIDINE AND TRIPHENYL GUANIDINE AND BEING PRESENT IN CONCENTRATION FROM 0.005 TO 0.07 GRAM PER LITER.
References Cited (Backward Citations)
US2389131A
Cited
US2441810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-05 | 1958-01-04 | 1958-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-05 | 1962-01-04 | 1962-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-05 | 1966-01-04 | 1966-07-06 | $7700.00 | Window Closed / Lapsed |