Patent US3881919A successfully refreshed from Google Patents.
US3881919A
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US
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Ternary alloys
Assignee: Whyco Chromium Co Inc
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Filing: 1974-01-07
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Granted: 1975-05-06
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Expires: 1994-01-07
Abstract
Abstract Bright, tarnish resistant and color stable ternary alloys of about 40 - 90% of tin, about 10 - 50% cobalt and about 1 - 28% of a third metal of Periodic Group IIB, IIIA or VIB. Typical third metals are zinc, cadmium, indium, antimony or chromium. The alloys are electrodeposited from aqueous acidic baths at a temperature of about 50* - 85*C. and current density of about 5 45 A/ft.2.
Inventors
- 👤 Jacob Hyner
- 👤 Robert A Michelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:40
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C22; C22C; C22C13/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
39 words
A BRIGHT, TARNISH RESISTANT AND COLOR STABLE TERNARY ALLOY CONSISTING ESSENTIALLY OF ABOUT 40-90 WT.% TIN 10-50 WT.% COBALT 1-28 WT.% THIRD METAL WHEREIN SAID THIRD METAL IS ANTIMONY OR A METAL OF PERIODIC GROUP IIB, III$ OR VIB.
Claim 2
Dependent Claim
39 words
A BRIGHT, TARNISH RESISTANT AND COLOR STABLE TERNARY ALLOY CONSISTING ESSENTIALLY OF ABOUT 40-90 WT.% TIN 10-50 WT.% COBALT 1-28 WT.% THIRD METAL WHEREIN SAID THIRD METAL IS ANTIMONY OR A METAL OF PERIODIC GROUP IIB, III$ OR VIB.
Claim 3
Dependent Claim
17 words
A ternary alloy as in claim 1 wherein said third metal is zinc, cadmium, indium, or chromium.
Claim 4
Dependent Claim
16 words
A ternary alloy as in claim 1 wherein said third metal is zinc, indium or chromium.
References Cited (Backward Citations)
US2853382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |