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US3615899A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of producing materials having a high strength a high electrical conductivity and a high heat resistance

Assignee: Furukawa Electric Co Ltd
•
Filing: 1968-11-08
•
Granted: 1971-10-26
•
Expires: 1988-11-08
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Abstract

Abstract Materials having a high strength, a high electrical conductivity and a high heat resistance are produced by directly internally oxidizing a wire or plate of dilute copper alloy consisting of less than 0.2% Be, less than 0.5% mg. less than 1.0% Ti, less than 0.2% Zr, either single-componentwise or multicomponentwise, or therewith less than 0.9% Al and/or less than 0.9% Si with the total addition amount not in excess of 1%, the remainder being copper, at a temperature above 600* C. and at an internal oxidation velocity no smaller than a critical value. Such a production is carried preferably out by coating the wire or plate, with a slurry composed of cuprous oxide, a heat-stable sinter inhibitor, and water or an organic solvent, completely drying said slurry-coated wire or plate and then embedding said slurry-coated wire or plate in a protective agent and then effecting the internal oxidation.

Inventors

  • 👤 Takao Kimura
  • 👤 Toyoaki Ishibachi
  • 👤 Yasushi Watanabe

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 15:39
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/10; C22C1/1078; H; H01; H01B; H01B1/00; H01B1/02; H01B1/026

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 59 words
The method as claimed in claim 1, wherein said alloy contains, besides 0.01 to 0.15% Zr, at least one element of the group consisting of 0.01 to 0.1% Be, 0.05 to 0.4% Mg, 0.05 to 0.8% Ti, 0.05 to 0.8% Al, and 0.05 to 0.8% Si, with the total addition amount not exceeding 1 percent, and the remainder copper.
Claim 2
Dependent Claim 24 words
The method as claimed in claim 1, wherein said alloy consists of 0.01 to 0.1% Be, 0.01 to 0.15% Zr, and the remainder copper.
Claim 3
Dependent Claim 24 words
The method as claimed in claim 1, wherein said alloy consists of 0.05 to 0.8% Al, 0.01 to 0.15% Zr, and the remainder copper.
Claim 4
Dependent Claim 39 words
The method as claimed in claim 1, wherein said alloy consists of 0.05 to 0.8% Al, 0.01 to 0.1% Be, 0.01 to 0.15% Zr, with the total addition amount not in excess of 1 percent, and the remainder copper.
Claim 5
Dependent Claim 17 words
The method as claimed in claim 1, wherein said internally oxidized wire or plate is further worked.
Claim 6
Dependent Claim 20 words
The method as claimed in claim 1, wherein said internally oxidized wire or plate is further worked and heat treated.
Claim 7
Dependent Claim 27 words
The method as claimed in claim 1, wherein said inhibitor is from the group consisting of alumina, magnesia, magnesium zirconate, cupric oxide, silica, and a mixture thereof.
Claim 8
Dependent Claim 27 words
The method as claimed in claim 1, wherein said shroud is from the group consisting of alumina, magnesia, magnesium zirconate, cupric oxide, silica, and a mixture thereof.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-10-25 1975-04-26 1975-10-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-10-25 1979-04-26 1979-10-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-10-25 1983-04-26 1983-10-26 $7700.00 Window Closed / Lapsed

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