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US4515850A
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Composite ferrite textile
Assignee: TDK Corp
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Filing: 1983-09-07
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Granted: 1985-05-07
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Expires: 2003-09-07
Abstract
Abstract A composite ferrite cloth having ferro-magnetic property weaved with composite ferrite textile has been found. The composite ferrite textile is the mixture of ferrite powder and the binder for coupling the same. The binder may be a high molecule compound like plastics, or glass with low melting point. The composite textile may be produced either by slicing a composite ferrite sheet attached on a plastics substrate, depositing composite ferrite paint around a core textile similar to the producing process of an electric wire, or just mixing ferrite powder with plastics or glass. The ferrite cloth which is weaved with composite ferrite textile is flexible and has many fields of application.
Inventors
- 👤 Ken Ishino
- 👤 Yasuo Hashimoto
- 👤 Kenichi Ichihara
- 👤 Yoshikazu Narumiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:16
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/0027; D; D01; D01D; D01D5/00; D01D5/42; D01D5/426; D06; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/49; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2861; Y10T442/2893; Y10T442/2926; Y10T442/30; Y10T442/3033; Y10T442/3041; Y10T442/3049
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
64 words
A composite ferrite cloth woven from textile, said textile including a composite ferrite textile containing composite ferrite, said composite ferrite comprising a mixture of a ferrite powder and a binder, said binder bonding said ferrite powder together to form said composite ferrite, wherein the volume ratio of ferrite powder to said mixture in said composite ferrite is in the range between 0.2 and 0.8.
Claim 2
Dependent Claim
64 words
A composite ferrite cloth woven from textile, said textile including a composite ferrite textile containing composite ferrite, said composite ferrite comprising a mixture of a ferrite powder and a binder, said binder bonding said ferrite powder together to form said composite ferrite, wherein the volume ratio of ferrite powder to said mixture in said composite ferrite is in the range between 0.2 and 0.8.
Claim 3
Dependent Claim
25 words
A composite ferrite cloth according to claim 1, wherein average diameter of said ferrite powder is in the range between 0.3 micron and 20 microns.
Claim 4
Dependent Claim
15 words
A composite ferrite cloth according to claim 1, wherein said binder is high molecular compound.
Claim 5
Dependent Claim
13 words
A composite ferrite cloth according to claim 1, wherein said binder is glass.
Claim 6
Dependent Claim
31 words
A composite ferrite cloth according to claim 1, wherein said composite ferrite textile comprises an elongated thin textile core surrounded by a layer of said composite ferrite covering said textile core.
Claim 7
Dependent Claim
24 words
A composite ferrite cloth according to claim 1, wherein said composite ferrite textile comprises a plastic substrate, and composite ferrite deposited on said substrate.
Claim 8
Dependent Claim
24 words
A composite ferrite cloth according to claim 1, wherein said composite ferrite textile is a mixed spinning of synthetic textile and composite ferrite textile.
Claim 9
Dependent Claim
36 words
A composite ferrite cloth according to claim 1, wherein said composite ferrite powder has chemical formula MO.Fe 2 O 3 , where M is metal of bi-valence selected from Ni, Zn, Mn, Gu, Mg and Sr.
Claim 10
Dependent Claim
23 words
A composite ferrite cloth according to claim 8, wherein said composite ferrite powder is Ba group ferrite powder or Sr group ferrite powder.
Claim 11
Dependent Claim
49 words
A composite ferrite textile containing composite ferrite, said composite ferrite comprising a mixture of ferrite powder and a binder, said binder bonding said ferrite powder together to form said ferrite composite, wherein the volume ratio of ferrite powder to said mixture is in the range between 0.2 and 0.8.
Claim 12
Dependent Claim
49 words
A composite ferrite textile containing composite ferrite, said composite ferrite comprising a mixture of ferrite powder and a binder, said binder bonding said ferrite powder together to form said ferrite composite, wherein the volume ratio of ferrite powder to said mixture is in the range between 0.2 and 0.8.
Claim 13
Dependent Claim
26 words
A composite ferrite textile according to claim 10, wherein the average diameter of said ferrite powder is in the range between 0.3 micron and 20 microns.
Claim 14
Dependent Claim
15 words
A composite ferrite textile according to claim 10, wherein said binder is high molecular compound.
Claim 15
Dependent Claim
13 words
A composite ferrite textile according to claim 10, wherein said binder is glass.
Claim 16
Dependent Claim
27 words
A composite ferrite textile according to claim 10, which comprises an elongated thin textile core surrounded by a layer of said composite ferrite covering said textile core.
Claim 17
Dependent Claim
20 words
A composite ferrite textile according to claim 10, which comprises a plastic substrate, an composite ferrite deposited on said substrate.
Claim 18
Dependent Claim
20 words
A composite ferrite textile according to claim 10, which is a mixed spinning of synthetic textile and composite ferrite textile.
Claim 19
Dependent Claim
36 words
A composite ferrite textile according to claim 10 wherein said composite ferrite powder has chemical formula MO.Fe 2 O 3 , where M is metal of bi-valence selected from Ni, Zn, Mn, Cu, Mg and Sr.
Claim 20
Dependent Claim
23 words
A composite ferrite textile according to claim 17 wherein said composite ferrite powder is Ba group ferrite powder or Sr group ferrite powder.
Claim 21
Dependent Claim
57 words
Process for producing composite ferrite textile according to claim 10, comprising the steps of depositing a layer of ferrite powder bonded by a high molecular compound to form a composite ferrite on a plastic film to form a composite ferrite sheet and, slicing said composite ferrite sheet into elongated thin ribbons to form said composite ferrite textile.
Claim 22
Dependent Claim
103 words
Process for producing composite ferrite textile according to claim 10, comprising the steps of providing a composite ferrite liquid in a basin, said liquid comprising a mixture of ferrite powder and binder, dipping a textile into said composite ferrite liquid and pulling up the textile so that the textile is covered with a layer of composite ferrite liquid, passing said textile covered with said layer of composite ferrite liquid through a hole with a predetermined diameter repetitively until a desired thickness of said layer is obtained, and drying the textile covered with said layer of composite ferrite to form said composite ferrite textile.
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) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |