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US4879096A
Expired / Lapsed
US
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Lead- and antimony-free solder composition
Assignee: Oatey Co
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Filing: 1989-04-19
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Granted: 1989-11-07
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Expires: 2009-04-19
Abstract
Abstract Lead-free and antimony-free solder compositions are described which comprise, as essential ingredients, about 0.05% to about 3% by weight of silver; about 0.5% to about 6% by weight of copper; about 0.1% to about 3% by weight of bismuth; and about 88% to about 99.35% by weight of tin. In preferred embodiments, the solders are also essentially free of cadmium and may also be essentially free of both cadmium and zinc.
Inventors
- 👤 Paul E. Naton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:04
CPC Classifications
C; C22; C22C; C22C13/00; B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/26; B23K35/262
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
47 words
A lead- and antimony-free solder composition comprising as essential ingredients about 0.05% to about 3% by weight of silver; about 0.5% to about 6% by weight of copper, about 0.1% to about 3% by weight of bismuth; and about 88% to about 99.35% by weight of tin.
Claim 2
Dependent Claim
47 words
A lead- and antimony-free solder composition comprising as essential ingredients about 0.05% to about 3% by weight of silver; about 0.5% to about 6% by weight of copper, about 0.1% to about 3% by weight of bismuth; and about 88% to about 99.35% by weight of tin.
Claim 3
Dependent Claim
12 words
The solder composition of claim 1 which is essentially free of cadmium.
Claim 4
Dependent Claim
14 words
The solder composition of claim 1 which is essentially free of cadmium and zinc.
Claim 5
Dependent Claim
16 words
The solder composition of claim 1 containing about 1% to about 5% by weight of copper.
Claim 6
Dependent Claim
16 words
The solder composition of claim 1 containing about 0.5% to about 2% by weight of bismuth.
Claim 7
Dependent Claim
14 words
The solder composition of claim 1 containing less than 1% by weight of silver.
Claim 8
Dependent Claim
14 words
The solder composition of claim 1 containing less than 0.5% by weight of silver.
Claim 9
Dependent Claim
47 words
A lead- and antimony-free solder composition comprising as essential ingredients about 0.05% to about 0.5% by weight of silver; about 1% to about 5% by weight of copper; about 0.5% to about 2% by weight of bismuth; and about 92.5% to about 98.45% by weight of tin.
Claim 10
Dependent Claim
47 words
A lead- and antimony-free solder composition comprising as essential ingredients about 0.05% to about 0.5% by weight of silver; about 1% to about 5% by weight of copper; about 0.5% to about 2% by weight of bismuth; and about 92.5% to about 98.45% by weight of tin.
Claim 11
Dependent Claim
12 words
The solder composition of claim 9 which is essentially free of cadmium.
Claim 12
Dependent Claim
14 words
The solder composition of claim 9 which is essentially free of cadmium and zinc.
Claim 13
Dependent Claim
34 words
A lead- and antimony-free solder composition comprising as essential ingredients about 0.1% by weight of silver; about 3% by weight of copper; about 1% by weight of bismuth; and the balance is substantially tin.
Claim 14
Dependent Claim
34 words
A lead- and antimony-free solder composition comprising as essential ingredients about 0.1% by weight of silver; about 3% by weight of copper; about 1% by weight of bismuth; and the balance is substantially tin.
Claim 15
Dependent Claim
14 words
The solder composition of claim 11 which is also free of cadmium and zinc.
References Cited (Backward Citations)
US1437641A
Cited
US3607253A
Cited
JPS514193A
Cited
JPS526468A
Cited
US4670217A
Cited
US4778733A
Cited
US4695428A
Cited
US4758407A
Cited
US4806309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-06 | 1993-05-08 | 1993-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-06 | 1997-05-08 | 1997-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-06 | 2001-05-08 | 2001-11-07 | $7700.00 | Window Closed / Lapsed |