DE3776898D1 - Verfahren zur herstellung eines metalloxidpulvers fuer einen varistor. - Google Patents

Verfahren zur herstellung eines metalloxidpulvers fuer einen varistor.

Info

Publication number
DE3776898D1
DE3776898D1 DE8787907859T DE3776898T DE3776898D1 DE 3776898 D1 DE3776898 D1 DE 3776898D1 DE 8787907859 T DE8787907859 T DE 8787907859T DE 3776898 T DE3776898 T DE 3776898T DE 3776898 D1 DE3776898 D1 DE 3776898D1
Authority
DE
Germany
Prior art keywords
oxide
powder
metal oxide
varistors
precursor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
DE8787907859T
Other languages
English (en)
Inventor
S Thompson
H Wiseman
S Sherman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Raychem Corp
Original Assignee
Raychem Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25443158&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3776898(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Raychem Corp filed Critical Raychem Corp
Application granted granted Critical
Publication of DE3776898D1 publication Critical patent/DE3776898D1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G9/00—Compounds of zinc
    • C01G9/02—Oxides; Hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
    • C01B13/14—Methods for preparing oxides or hydroxides in general
    • C01B13/36—Methods for preparing oxides or hydroxides in general by precipitation reactions in aqueous solutions
    • C01B13/363—Mixtures of oxides or hydroxides by precipitation
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/453—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on zinc, tin, or bismuth oxides or solid solutions thereof with other oxides, e.g. zincates, stannates or bismuthates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
    • H01C7/105—Varistor cores
    • H01C7/108—Metal oxide
    • H01C7/112—ZnO type

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electromagnetism (AREA)
  • Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Thermistors And Varistors (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)
DE8787907859T 1986-10-16 1987-10-14 Verfahren zur herstellung eines metalloxidpulvers fuer einen varistor. Revoked DE3776898D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US92010086A 1986-10-16 1986-10-16
PCT/US1987/002695 WO1988002921A2 (en) 1986-10-16 1987-10-14 Metal oxide varistors, precursor powder compositions and methods for preparing same

Publications (1)

Publication Number Publication Date
DE3776898D1 true DE3776898D1 (de) 1992-04-02

Family

ID=25443158

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787907859T Revoked DE3776898D1 (de) 1986-10-16 1987-10-14 Verfahren zur herstellung eines metalloxidpulvers fuer einen varistor.

Country Status (8)

Country Link
EP (1) EP0289582B1 (de)
JP (1) JP2580302B2 (de)
KR (1) KR880701958A (de)
AT (1) ATE72908T1 (de)
BR (1) BR8707507A (de)
CA (1) CA1332278C (de)
DE (1) DE3776898D1 (de)
WO (1) WO1988002921A2 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5143711A (en) * 1989-12-05 1992-09-01 Asea Brown Boveri Ltd. Process for manufacturing a precursor powder for use in making a varistor and a powder manufactured in this process
US4996510A (en) * 1989-12-08 1991-02-26 Raychem Corporation Metal oxide varistors and methods therefor
US5153554A (en) * 1990-05-08 1992-10-06 Raychem Corp. Low voltage varistor array
US5124822A (en) * 1990-05-08 1992-06-23 Raychem Corporation Varistor driven liquid crystal display
KR940010133A (ko) * 1992-10-20 1994-05-24 모리시타 요이찌 산화아연바리스터의 제조방법
JP3733599B2 (ja) * 1993-08-11 2006-01-11 住友化学株式会社 金属酸化物粉末およびその製造方法
JP3738454B2 (ja) * 1993-08-11 2006-01-25 住友化学株式会社 複合金属酸化物粉末およびその製造方法
CN101023025A (zh) * 2004-06-25 2007-08-22 微小分子股份有限公司 细粒度颗粒的生产方法
AU2005256170B2 (en) * 2004-06-25 2010-09-02 The Very Small Particle Company Pty Ltd Method for producing fine-grained particles
WO2007000014A1 (en) * 2005-06-29 2007-01-04 Very Small Particle Company Pty Ltd Method of making metal oxides
CN101630553B (zh) * 2009-07-17 2011-10-12 立昌先进科技股份有限公司 一种氧化锌变阻器的制备方法
DE102016104990A1 (de) 2016-03-17 2017-09-21 Epcos Ag Keramikmaterial, Varistor und Verfahren zum Herstellen des Keramikmaterials und des Varistors

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2526137C2 (de) * 1975-06-10 1985-03-21 Siemens AG, 1000 Berlin und 8000 München Verfahren zur Herstellung eines Zinkoxid-Varistors
JPS58225604A (ja) * 1982-06-25 1983-12-27 株式会社東芝 酸化物電圧非直線抵抗体
US4575440A (en) * 1984-02-21 1986-03-11 Gte Laboratories Incorporated Process for the preparation of homogeneous metal oxide varistors

Also Published As

Publication number Publication date
KR880701958A (ko) 1988-11-07
BR8707507A (pt) 1989-02-21
WO1988002921A3 (en) 1988-05-05
JPH01501062A (ja) 1989-04-13
EP0289582B1 (de) 1992-02-26
WO1988002921A2 (en) 1988-04-21
JP2580302B2 (ja) 1997-02-12
ATE72908T1 (de) 1992-03-15
CA1332278C (en) 1994-10-11
EP0289582A1 (de) 1988-11-09

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8331 Complete revocation