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US4040937A
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US
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Mother blank for producing starting sheets used in electrolytic non-ferrous metal production
Assignee: Onahama Smelting and Refining Co Ltd
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Filing: 1975-12-29
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Granted: 1977-08-09
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Expires: 1995-12-29
Abstract
Abstract A mother blank for producing starting sheets used in electrolytic non-ferrous metal production, is composed of a laminar electrolytic deposition member comprising a planar metal member constituting the central layer of laminar deposition member, and electrically conductive polybutene resin layers constituting two surface layers of the laminar deposition member, and a frame-like member made of an electrically nonconductive polybutene resin and attached integrally to the periphery of the laminar deposition member.
Inventors
- 👤 Ryozo Iijima
- 👤 Yukio Matsubara
- 👤 Ginichi Yamaguchi
- 👤 Masatoshi Fukushima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:34
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/28; C; C25; C25C; C25C7/00; C25C7/02; B32B15/00; B32B15/02; B32B15/04; B32B15/08; B32B15/20; B32B3/00; B32B3/26; B32B3/266; B32B5/00; B32B5/16; B32B9/00; B32B9/005; B32B9/007; B32B9/04; B32B9/045; B32B2307/00; B32B2307/20; B32B2307/202; B32B2311/00; B32B2311/12; B32B2311/24; B32B2313/00; B32B2313/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
188 words
A mother blank for producing starting sheets used in electrolytic non-ferrous metal production comprising a laminar electrolytic deposition member and a frame-like insulating member attached integrally to the periphery of the laminar electrolytic deposition member, said laminar electrolytic deposition member comprising a plurality of electrically conductive polybutene resin layers, two of the layers forming the electrolytic deposition surfaces of the said laminar electrolytic deposition member and a planar metal member interposed between the electrically conductive polybutene resin layers; said frame-like insulating member being made of an electrically non-conductive polybutene resin, each of said electrically conductive and non-conductive polybutene resins being a crystalline polybutene resin selected from the group consisting of homopolymer of butene-1, copolymers of butene-1 and an α-olefin having carbon atoms of 2 to 4 in an amount not exceeding 20% by weight of the butene-1, and a polymer mixture of polybutene-1 and polymer of an α-olefin having carbon atoms of from 2 to 4 in an amount not exceeding 20% by weight of the polybutene-1, and wherein said electrically conductive polybutene resin is a mixture of said crystalline polybutene resin and an electrically conductive powdery substance.
Claim 2
Dependent Claim
188 words
A mother blank for producing starting sheets used in electrolytic non-ferrous metal production comprising a laminar electrolytic deposition member and a frame-like insulating member attached integrally to the periphery of the laminar electrolytic deposition member, said laminar electrolytic deposition member comprising a plurality of electrically conductive polybutene resin layers, two of the layers forming the electrolytic deposition surfaces of the said laminar electrolytic deposition member and a planar metal member interposed between the electrically conductive polybutene resin layers; said frame-like insulating member being made of an electrically non-conductive polybutene resin, each of said electrically conductive and non-conductive polybutene resins being a crystalline polybutene resin selected from the group consisting of homopolymer of butene-1, copolymers of butene-1 and an α-olefin having carbon atoms of 2 to 4 in an amount not exceeding 20% by weight of the butene-1, and a polymer mixture of polybutene-1 and polymer of an α-olefin having carbon atoms of from 2 to 4 in an amount not exceeding 20% by weight of the polybutene-1, and wherein said electrically conductive polybutene resin is a mixture of said crystalline polybutene resin and an electrically conductive powdery substance.
Claim 3
Dependent Claim
51 words
A mother blank as set forth in claim 1 wherein said electrically nonconductive polybutene resin is homopolymer of butene-1, and said electrically conductive polybutene resin is a mixture of homopolymer of butene-1 and an electrically conductive powdery substance in the range of 20 to 80% by weight of the butene-1 homopolymer.
Claim 4
Dependent Claim
18 words
A mother blank as set forth in claim 2 wherein said electrically conductive powdery substance is carbon powder.
Claim 5
Dependent Claim
28 words
A mother blank as set forth in claim 2 wherein said electrically conductive powdery substance is electrically conductive carbon powder of a particle size not exceeding 100 mμ.
Claim 6
Dependent Claim
21 words
A mother blank as set forth in claim 1 wherein said planar metal member is a sheet of metal wire net.
Claim 7
Dependent Claim
19 words
A mother blank as set forth in claim 1 wherein said planar metal member is a perforated metal plate.
Claim 8
Dependent Claim
24 words
A mother blank as set forth in claim 1 wherein said planar metal member is made of a material selected from copper and aluminum.
Claim 9
Dependent Claim
20 words
A mother blank as set forth in claim 1 wherein said laminar electrolytic deposition member further contains a reinforcing member.
Claim 10
Dependent Claim
34 words
A mother blank as set forth in claim 1 wherein said mother blank is obtained by a process including at its final stage a step of melt-forming the polybutene resins by heating under pressure.
Claim 11
Dependent Claim
75 words
A mother blank as set forth in claim 1 wherein said crystalline polybutene resin is selected from the group consisting of copolymers of butene-1 and an α-olefin having carbon atoms of from 2 to 4 in an amount not exceeding 5% by weight of the butene-1 and polymer mixtures of polybutene-1 and polymer of an α-olefin having carbon atoms of from 2 to 4 in an amount not exceeding 5% by weight of the polybutene-1.
Claim 12
Dependent Claim
28 words
A mother blank as set forth in claim 10 wherein said electrically conductive powdery sustance is electrically conductive carbon powder of a particle size not exceeding 100 mμ.
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) | 1980-08-08 | 1981-02-07 | 1981-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-08 | 1985-02-07 | 1985-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-08 | 1989-02-07 | 1989-08-09 | $7700.00 | Window Closed / Lapsed |