US4758407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pb-free, tin base solder composition
Assignee: J W Harris Co
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Filing: 1987-06-29
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Granted: 1988-07-19
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Expires: 2007-06-29
Abstract
Abstract A lead free, cadmium free tin and tin/antimony based solder alloy having a wide melting range for joining copper tubes and brass pipe and fittings. The non-toxic tin based solder composition has a range of 92.5-96.9% tin, 3.0-5.0% copper, 0.1-2.0% nickel and 0.0-5.0% silver. The non-toxic tin/antimony based solder composition has a range of 87.0-92.9% tin, 4.0-6.0% antimony, 3.0-5.0% copper, 0.0-2.0% nickel and 0.0-0.5% silver and is especially suited for plumbing applications having tight loose fitting solder joints which are exposed to potable water.
Inventors
- 👤 Richard E. Ballentine
- 👤 Joseph W. Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:37
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/26; B23K35/262; C; C22; C22C; C22C13/00; C22C13/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
16 words
A lead-free metal solder composition comprising, by weight: 0.1-2.0% nickel 3.0-5.0% copper 4.0-6.0% antimony 87.0-92.9% tin
Claim 2
Dependent Claim
16 words
A lead-free metal solder composition comprising, by weight: 0.1-2.0% nickel 3.0-5.0% copper 4.0-6.0% antimony 87.0-92.9% tin
Claim 3
Dependent Claim
18 words
A lead-free metal solder composition comprising, by weight: 0.1-0.5% silver 0.1-2.0% nickel 3.0-5.0% copper 4.0-6.0% antimony 87.0-92.9% tin
Claim 4
Dependent Claim
18 words
A lead-free metal solder composition comprising, by weight: 0.1-0.5% silver 0.1-2.0% nickel 3.0-5.0% copper 4.0-6.0% antimony 87.0-92.9% tin
Claim 5
Dependent Claim
16 words
A lead-free metal solder composition comprising, by weight: 0.1-0.5% silver 3.0-5.0% copper 4.0-6.0% antimony 87.0-92.9% tin
Claim 6
Dependent Claim
16 words
A lead-free metal solder composition comprising, by weight: 0.1-0.5% silver 3.0-5.0% copper 4.0-6.0% antimony 87.0-92.9% tin
Claim 7
Dependent Claim
14 words
A lead-free metal solder composition comprising, by weight: 0.1-2.0% nickel 3.0-5.0% copper 93.0-96.9% tin
Claim 8
Dependent Claim
14 words
A lead-free metal solder composition comprising, by weight: 0.1-2.0% nickel 3.0-5.0% copper 93.0-96.9% tin
Claim 9
Dependent Claim
16 words
The composition of claim 4, said metals comprising by weight: 0.2% nickel 3.0% copper 96.8% tin
Claim 10
Dependent Claim
18 words
The composition of claim 3, said metals comprising by weight: 0.5% silver 5.0% copper 4.0% antimony 90.5% tin
Claim 11
Dependent Claim
18 words
The composition of claim 3, said metals, comprising by weight: 0.2% silver 5.0% copper 5.0% antimony 89.8% tin
Claim 12
Dependent Claim
20 words
The composition of claim 2, said metals comprising by weight: 0.1% silver 0.2% nickel 3.0% copper 5.0% antimony 91.7% tin
Claim 13
Dependent Claim
18 words
The composition of claim 1, said metals comprising by weight: 0.5% nickel 3.0% copper 5.0% antimony 91.5% tin
Claim 14
Dependent Claim
16 words
A lead-free metal solder composition comprising by weight: 0.1-0.5% silver 0.1-2.0% nickel 3.0-5.0% copper 92.5%-96.8% tin
Claim 15
Dependent Claim
16 words
A lead-free metal solder composition comprising by weight: 0.1-0.5% silver 0.1-2.0% nickel 3.0-5.0% copper 92.5%-96.8% tin
Claim 16
Dependent Claim
18 words
The composition of claim 10, said metals comprising by weight: 0.2% silver 0.3% nickel 4.0% copper 95.5% tin
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) | 1991-07-19 | 1992-01-18 | 1992-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-19 | 1996-01-18 | 1996-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-19 | 2000-01-18 | 2000-07-19 | $7700.00 | Window Closed / Lapsed |