Patent US6072554A successfully refreshed from Google Patents.
Patent US4518662A successfully refreshed from Google Patents.
US4518662A
Expired / Lapsed
US
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Copper solder containing cobalt
Assignee: Hilti AG
•
Filing: 1984-06-06
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Granted: 1985-05-21
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Expires: 2004-06-06
Abstract
Abstract Copper alloy solders are disclosed which contain 0.5 to 20% by weight of cobalt. The copper and cobalt may be arranged in heterogeneous phases.
Inventors
- 👤 Peter Listemann
- 👤 Sigurd Monch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:11
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/302; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/1291
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
29 words
In a copper alloy solder, the improvement which comprises that the solder contains 0.5 to 20% by weight of cobalt 0.05 to 0.5% by weight of carbon, balance copper.
Claim 2
Dependent Claim
29 words
In a copper alloy solder, the improvement which comprises that the solder contains 0.5 to 20% by weight of cobalt 0.05 to 0.5% by weight of carbon, balance copper.
Claim 3
Dependent Claim
25 words
The improvement of claim 1, wherein the solder comprises: 88-97% by weight of copper, 1-12% by weight of cobalt, and 0.05-0.5% by weight of carbon.
Claim 4
Dependent Claim
27 words
The improvement of claim 1, wherein the solder comprises: at least 91% by weight of copper, 2-8% by weight of cobalt, and 0.05-0.4% by weight of carbon.
Claim 5
Dependent Claim
25 words
The improvement of claim 1, wherein the solder comprises: 94-97% by weight of copper, 3-6% by weight of cobalt, and 0.05-0.5% by weight of carbon.
Claim 6
Dependent Claim
21 words
The improvement of claim 1, wherein the solder comprises carbon in an amount up to the saturation limit of the cobalt.
Claim 7
Dependent Claim
21 words
The improvement of claim 1, wherein the solder contains carbon in an amount corresponding to the saturation limit of the cobalt.
Claim 8
Dependent Claim
42 words
In a reactive copper alloy solder, the improvement which comprises that the solder contains 0.5 to 20% by weight of cobalt with the copper and the cobalt, 0.05-0.5% by weight of carbon, balance copper at least partially being arranged in heterogeneous phases.
Claim 9
Dependent Claim
42 words
In a reactive copper alloy solder, the improvement which comprises that the solder contains 0.5 to 20% by weight of cobalt with the copper and the cobalt, 0.05-0.5% by weight of carbon, balance copper at least partially being arranged in heterogeneous phases.
Claim 10
Dependent Claim
25 words
The improvement of claim 7, wherein the solder comprises: 88-97% by weight of copper, 1-12% by weight of cobalt, and 0.05-0.5% by weight of carbon.
Claim 11
Dependent Claim
27 words
The improvement of claim 7, wherein the solder comprises: at least 91% by weight of copper, 2-8% by weight of cobalt, and 0.05-0.4% by weight of carbon.
Claim 12
Dependent Claim
25 words
The improvement of claim 7, wherein the solder comprises: 94-97% by weight of copper, 3-6% by weight of cobalt, and 0.05-0.5% by weight of carbon.
Claim 13
Dependent Claim
20 words
The improvement of claim 7, wherein the solder comprises carbon in an amount up to the saturation limit of cobalt.
Claim 14
Dependent Claim
27 words
The improvement of claim 7, wherein carbon is present in the form of a cobalt-carbon alloy in an amount up to the saturation limit of the cobalt.
Claim 15
Dependent Claim
24 words
The improvement of claim 7, wherein carbon is present in the form of a carbon compound which gives off carbon at the soldering temperature.
Claim 16
Dependent Claim
20 words
The improvement of claim 7, wherein at least one of the copper and cobalt are present in finely particulate form.
Claim 17
Dependent Claim
17 words
The improvement of claim 7, wherein the solder is incorporated in a solid or paste-like inert carrier.
Claim 18
Dependent Claim
34 words
A composite solder composition comprising at least one layer of copper and at least one layer of cobalt, wherein the composite contains 0.5-20% by weight of cobalt, 0.05-0.5% by weight of carbon, balance copper.
Claim 19
Dependent Claim
34 words
A composite solder composition comprising at least one layer of copper and at least one layer of cobalt, wherein the composite contains 0.5-20% by weight of cobalt, 0.05-0.5% by weight of carbon, balance copper.
Claim 20
Dependent Claim
11 words
The improvement of claim 16, further comprising a carbon containing layer.
Claim 21
Dependent Claim
18 words
The improvement of claim 16, wherein the copper is arranged in a layer sandwiched between two cobalt layers.
Claim 22
Dependent Claim
26 words
A non-ferrous alloy comprising: at least 91% by weight of copper, 3-8% by weight of cobalt, 0.05-0.5% by weight of carbon, with the remainder being contaminants.
Claim 23
Dependent Claim
26 words
A non-ferrous alloy comprising: at least 91% by weight of copper, 3-8% by weight of cobalt, 0.05-0.5% by weight of carbon, with the remainder being contaminants.
Claim 24
Dependent Claim
20 words
A non-ferrous alloy comprising: 92-96% by weight of copper, 4-8% by weight of cobalt, and 0.05-0.6% by weight of carbon.
Claim 25
Dependent Claim
20 words
A non-ferrous alloy comprising: 92-96% by weight of copper, 4-8% by weight of cobalt, and 0.05-0.6% by weight of carbon.
Claim 26
Independent Claim
35 words
A method of soldering steel with hard metal, such as WC-Co-hard metal, which comprises effecting the soldering with a copper alloy solder containing 0.5-20% by weight of cobalt, 0.05-0.5% by weight of carbon, balance copper.
Claim 27
Independent Claim
35 words
A method of soldering steel with hard metal, such as WC-Co-hard metal, which comprises effecting the soldering with a copper alloy solder containing 0.5-20% by weight of cobalt, 0.05-0.5% by weight of carbon, balance copper.
Claim 28
Independent Claim
44 words
A method of soldering steel with hard metal which comprises effecting the soldering with a reactive solder containing a copper layer and at least one separate cobalt layer wherein the solder contains 0.05-20% by weight of cobalt, 0.05-0.5% by weight of carbon balance copper.
Claim 29
Independent Claim
44 words
A method of soldering steel with hard metal which comprises effecting the soldering with a reactive solder containing a copper layer and at least one separate cobalt layer wherein the solder contains 0.05-20% by weight of cobalt, 0.05-0.5% by weight of carbon balance copper.
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) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |