DE3680931D1 - Verfahren zur herstellung von kristallinem ammoniummetawolframat. - Google Patents

Verfahren zur herstellung von kristallinem ammoniummetawolframat.

Info

Publication number
DE3680931D1
DE3680931D1 DE8686102455T DE3680931T DE3680931D1 DE 3680931 D1 DE3680931 D1 DE 3680931D1 DE 8686102455 T DE8686102455 T DE 8686102455T DE 3680931 T DE3680931 T DE 3680931T DE 3680931 D1 DE3680931 D1 DE 3680931D1
Authority
DE
Germany
Prior art keywords
tolframate
producing crystalline
ammonium meta
crystalline ammonium
meta
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.)
Expired - Fee Related
Application number
DE8686102455T
Other languages
English (en)
Inventor
Carl W Boyer
Donald H Ennis
Tai K Kim
Martin B Mcinnis
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.)
Osram Sylvania Inc
Original Assignee
GTE Products 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
Priority claimed from US06/704,842 external-priority patent/US4612181A/en
Priority claimed from US06/704,992 external-priority patent/US4612183A/en
Application filed by GTE Products Corp filed Critical GTE Products Corp
Application granted granted Critical
Publication of DE3680931D1 publication Critical patent/DE3680931D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G41/00—Compounds of tungsten

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Powder Metallurgy (AREA)
DE8686102455T 1985-02-25 1986-02-25 Verfahren zur herstellung von kristallinem ammoniummetawolframat. Expired - Fee Related DE3680931D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/704,842 US4612181A (en) 1985-02-25 1985-02-25 Method of producing crystalline ammonium metatungstate
US06/704,992 US4612183A (en) 1985-02-25 1985-02-25 Method of producing crystalline ammonium metatungstate

Publications (1)

Publication Number Publication Date
DE3680931D1 true DE3680931D1 (de) 1991-09-26

Family

ID=27107388

Family Applications (2)

Application Number Title Priority Date Filing Date
DE1986102455 Pending DE193171T1 (de) 1985-02-25 1986-02-25 Verfahren zur herstellung von kristallinem ammoniummetawolframat.
DE8686102455T Expired - Fee Related DE3680931D1 (de) 1985-02-25 1986-02-25 Verfahren zur herstellung von kristallinem ammoniummetawolframat.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE1986102455 Pending DE193171T1 (de) 1985-02-25 1986-02-25 Verfahren zur herstellung von kristallinem ammoniummetawolframat.

Country Status (2)

Country Link
EP (1) EP0193171B1 (de)
DE (2) DE193171T1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3743267A1 (de) * 1987-12-19 1989-06-29 Starck Hermann C Fa Verfahren zur herstellung von ammoniummetawolframat
CN101618893B (zh) * 2009-08-05 2011-04-13 江西稀有稀土金属钨业集团有限公司 一种偏钨酸铵的制备方法
CA3120818A1 (en) 2018-12-19 2020-06-25 H.C. Starck Tungsten Gmbh Method for preparing ammonium metatungstate

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175881A (en) * 1962-07-10 1965-03-30 Sylvania Electric Prod Method of producing crystalline ammonium metatungstate
FR1356164A (fr) * 1963-05-07 1964-03-20 Pechiney Prod Chimiques Sa Procédé de préparation de métatungstate d'ammonium cristallisé
US4504461A (en) * 1983-09-02 1985-03-12 Amax Inc. Process for producing ammonium metatungstate

Also Published As

Publication number Publication date
EP0193171A2 (de) 1986-09-03
DE193171T1 (de) 1986-12-18
EP0193171B1 (de) 1991-08-21
EP0193171A3 (en) 1988-07-06

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee