Patent US4180616A successfully refreshed from Google Patents.
US4180616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soft soldering
Assignee: Multicore Solders Ltd
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Filing: 1977-11-25
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Granted: 1979-12-25
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Expires: 1997-11-25
Abstract
Abstract Flux compositions for use in soft soldering processes comprise as part or all of the active flux material at least one compound selected from the class of compounds characterized by the presence therein of a perhydro-1,2-cyclopentanophenanthrene ring system. Compounds belonging to this class include the bile acids.
Inventors
- 👤 David G. Lovering
- 👤 James H. Turnbull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:39
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; C; C07; C07J; C07J9/00; C07J9/005; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2958
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
38 words
A soldering composition for use in soft soldering processes, the composition comprising (a) a soft solder alloy and (b) a flux composition comprising as an essential active flux material at least one compound containing a perhydro-1,2-cyclopentanophenanthrene ring system.
Claim 2
Dependent Claim
38 words
A soldering composition for use in soft soldering processes, the composition comprising (a) a soft solder alloy and (b) a flux composition comprising as an essential active flux material at least one compound containing a perhydro-1,2-cyclopentanophenanthrene ring system.
Claim 3
Dependent Claim
21 words
A soldering composition as claimed in claim 1, wherein said flux material is a bile acid or mixture of bile acids.
Claim 4
Dependent Claim
15 words
A soldering composition as claimed in claim 1, wherein said flux material is cholic acid.
Claim 5
Dependent Claim
39 words
A soldering composition for use in soft soldering processes, the composition comprising (a) a soft solder tin/lead alloy and (b) a flux composition comprising as an essential active flux material at least one compound containing a perhydro-1,2-cyclopentanophenanthrene ring system.
Claim 6
Dependent Claim
39 words
A soldering composition for use in soft soldering processes, the composition comprising (a) a soft solder tin/lead alloy and (b) a flux composition comprising as an essential active flux material at least one compound containing a perhydro-1,2-cyclopentanophenanthrene ring system.
Claim 7
Dependent Claim
20 words
A soldering composition as claimed in claim 4, wherein said flux material is composed of one of more bile acids.
Claim 8
Dependent Claim
15 words
A soldering composition as claimed in claim 4, wherein said flux material is cholic acid.
Claim 9
Dependent Claim
35 words
A soldering composition as claimed in claim 1, wherein the soft solder alloy and the flux composition are maintained in interfacial contact by the soldering composition being in the form of a flux-cored solder member.
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) | 1982-12-24 | 1983-06-25 | 1983-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-24 | 1987-06-25 | 1987-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-24 | 1991-06-25 | 1991-12-25 | $7700.00 | Window Closed / Lapsed |