US4952368A
Expired / Lapsed
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Zinc alloys for electrochemical battery cans
Assignee: SA ACEC-UNION MINIERE NV A Co UNDER LAW OF BELGIUM
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Filing: 1989-09-22
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Granted: 1990-08-28
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Expires: 2009-09-22
Abstract
Abstract The alloys contain, besides zinc and unavoidable impurities, 0.05-0.8% of Pb and either 0.005-1% of Al and 0.0005-0.1% REM, REM being a rare earth metal or a mixture of rare earth metals, or 0.005-1% of Mn or 0.005-1.5% of a mixture of Al, REM and Mn. These alloys have a higher mechanical strength and a better resistance to corrosion than the known alloys with Pb-Cd or Pb.
Inventors
- 👤 Andre Skenazi
- 👤 Ivan A. Strauven
- 👤 Michel L. Cauwe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:21
CPC Classifications
C; C22; C22C; C22C18/00; H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/38; H01M4/42; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
61 words
Lead bearing zinc alloys for electrochemical battery cans consisting essentially of the alloy concentration basis 0.05-0.8% of lead and either 0.005-1% of Al and 0.0005-0.1% of REM, REM being a rare earth metal or a mixture of rare earth metals or 0.005-1% of Mn or 0.005-1.5% of a mixture of Al, REM and Mn, the rest being zinc and unavoidable impurities.
Claim 2
Dependent Claim
61 words
Lead bearing zinc alloys for electrochemical battery cans consisting essentially of the alloy concentration basis 0.05-0.8% of lead and either 0.005-1% of Al and 0.0005-0.1% of REM, REM being a rare earth metal or a mixture of rare earth metals or 0.005-1% of Mn or 0.005-1.5% of a mixture of Al, REM and Mn, the rest being zinc and unavoidable impurities.
Claim 3
Dependent Claim
12 words
Alloy according to claim 1 which contains at least 0.15% of Pb.
Claim 4
Dependent Claim
10 words
Alloy according to claim 2 which contains 0.2-0.3% of Pb.
Claim 5
Dependent Claim
20 words
Alloy according to claim 1 which contains, besides Zn, Pb and unavoidable impurities, 0.01-1% of Al and 0.001-0.01% of REM.
Claim 6
Dependent Claim
20 words
Alloy according to claim 2 which contains, besides Zn, Pb and unavoidable impurities, 0.01-1% of Al and 0.001-0.01% of REM.
Claim 7
Dependent Claim
20 words
Alloy according to claim 3 which contains, besides Zn, Pb and unavoidable impurities, 0.01-1% of Al and 0.001-0.01% of REM.
Claim 8
Dependent Claim
16 words
Alloy according to claim 1 which contains, besides Zn, Pb and unavoidable impurities, 0.01-0.1% of Mn.
Claim 9
Dependent Claim
16 words
Alloy according to claim 2 which contains, besides Zn, Pb and unavoidable impurities, 0.01-0.1% of Mn.
Claim 10
Dependent Claim
16 words
Alloy according to claim 3 which contains, besides Zn, Pb and unavoidable impurities, 0.01-0.1% of Mn.
Claim 11
Dependent Claim
31 words
Alloy according to claim 1 which contains Al, REM and Mn and that the atomic ratio Al:Mn ranges from 0.3 to 10 and the atomic ratio Al:REM from 30 to 200.
Claim 12
Dependent Claim
31 words
Alloy according to claim 2 which contains Al, REM and Mn and that the atomic ratio Al:Mn ranges from 0.3 to 10 and the atomic ratio Al:REM from 30 to 200.
Claim 13
Dependent Claim
31 words
Alloy according to claim 3 which contains Al, REM and Mn and that the atomic ratio Al:Mn ranges from 0.3 to 10 and the atomic ratio Al:REM from 30 to 200.
Claim 14
Dependent Claim
16 words
Alloy according to claim 1 wherein the total content of Al, REM and Mn is 0.01-0.1%.
Claim 15
Dependent Claim
16 words
Alloy according to claim 2 wherein the total content of Al, REM and Mn is 0.01-0.1%.
Claim 16
Dependent Claim
16 words
Alloy according to claim 3 wherein the total content of Al, REM and Mn is 0.01-0.1%.
Claim 17
Dependent Claim
16 words
Alloy according to claim 10 wherein the total content of Al, REM and Mn is 0.01-0.1%.
Claim 18
Dependent Claim
16 words
Alloy according to claim 11 wherein the total content of Al, REM and Mn is 0.01-0.1%.
Claim 19
Dependent Claim
16 words
Alloy according to claim 12 wherein the total content of Al, REM and Mn is 0.01-0.1%.
Claim 20
Dependent Claim
10 words
Alloy according to claim 1 wherein REM is misch metal.
Claim 21
Dependent Claim
19 words
Casting for being processed into cans for electrochemical batteries, said casting consisting of an alloy according to claim 1.
Claim 22
Dependent Claim
18 words
Rolled strip for being punched into slugs said rolled strip consisting of an alloy according to claim 1.
Claim 23
Dependent Claim
18 words
Slug for being extruded into a battery can, said slug consisting of an alloy according to claim 1.
Claim 24
Dependent Claim
14 words
Can for electrochemical battery, said can consisting of an alloy according to claim 1.
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) | 1993-08-27 | 1994-02-26 | 1994-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-27 | 1998-02-26 | 1998-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-27 | 2002-02-26 | 2002-08-28 | $7700.00 | Window Closed / Lapsed |