DE69300179D1 - Verfahren zur Herstellung von Röntgenstrahlenphosphor mit verbesserten Wirksamheit. - Google Patents

Verfahren zur Herstellung von Röntgenstrahlenphosphor mit verbesserten Wirksamheit.

Info

Publication number
DE69300179D1
DE69300179D1 DE69300179T DE69300179T DE69300179D1 DE 69300179 D1 DE69300179 D1 DE 69300179D1 DE 69300179 T DE69300179 T DE 69300179T DE 69300179 T DE69300179 T DE 69300179T DE 69300179 D1 DE69300179 D1 DE 69300179D1
Authority
DE
Germany
Prior art keywords
production
improved effectiveness
ray phosphor
phosphor
ray
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
DE69300179T
Other languages
English (en)
Other versions
DE69300179T2 (de
Inventor
David Hedden
Constantine Markellos
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.)
Agfa Gevaert NV
Original Assignee
EI Du Pont de Nemours and Co
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
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of DE69300179D1 publication Critical patent/DE69300179D1/de
Application granted granted Critical
Publication of DE69300179T2 publication Critical patent/DE69300179T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/06—Jet mills
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7701—Chalogenides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
    • C09K11/7767—Chalcogenides
    • C09K11/7769—Oxides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Luminescent Compositions (AREA)
DE69300179T 1992-02-07 1993-01-29 Verfahren zur Herstellung von Röntgenstrahlenphosphor mit verbesserten Wirksamheit. Expired - Fee Related DE69300179T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/832,822 US5154360A (en) 1992-02-07 1992-02-07 Process of making X-ray phosphors having improved efficiency
PCT/US1993/000609 WO1993016146A1 (en) 1992-02-07 1993-01-29 Process of making x-ray phosphors having improved efficiency

Publications (2)

Publication Number Publication Date
DE69300179D1 true DE69300179D1 (de) 1995-07-13
DE69300179T2 DE69300179T2 (de) 1995-11-16

Family

ID=25262700

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69300179T Expired - Fee Related DE69300179T2 (de) 1992-02-07 1993-01-29 Verfahren zur Herstellung von Röntgenstrahlenphosphor mit verbesserten Wirksamheit.

Country Status (5)

Country Link
US (1) US5154360A (de)
EP (1) EP0580841B1 (de)
JP (1) JPH06506980A (de)
DE (1) DE69300179T2 (de)
WO (1) WO1993016146A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5310505A (en) * 1992-12-16 1994-05-10 E. I. Du Pont De Nemours And Company Process of making tantalate X-ray phosphors
US5395554A (en) * 1992-12-16 1995-03-07 E. I. Du Pont De Nemours And Company Flux for phosphor particle size control
US5611960A (en) * 1996-03-28 1997-03-18 Sterling Diagnostic Imaging, Inc. Process of preparing tantalate X-ray intensifying phosphors with decreased delayed fluorescence

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3229918A (en) * 1963-06-05 1966-01-18 Helme Products Inc Fluid grinding mill with interchange-able liners
US3731882A (en) * 1969-09-23 1973-05-08 Knapsack Ag Apparatus for the manufacture of most finely pulverized red phosphorus
DE2063635C3 (de) * 1970-12-30 1980-01-03 Daikin Kogyo Co. Ltd., Tokio Verfahren zur Herstellung eines nicht faserigen ultrafeinen Polytetrafluoräthylen-Formpulvers
US3726484A (en) * 1971-10-15 1973-04-10 Du Pont Stepped fluid energy mill
US4925702A (en) * 1989-10-02 1990-05-15 Gte Products Corporation Process for improving the luminescence and bulk density of niobium activated yttrium tantalate X-ray phosphor
US4929386A (en) * 1989-06-07 1990-05-29 Gte Products Corporation Process for preparing a niobium activated yttrium tantalate X-ray phosphor
US4929384A (en) * 1989-06-07 1990-05-29 Gte Products Corporation Process for improving the luminescence of niobium activated yttrium tantalate X-ray phosphor
US4929385A (en) * 1989-06-07 1990-05-29 Gte Products Corporation Freon free process for preparing a niobium activated yttrium tantalate X-ray phosphor
US5064729A (en) * 1990-12-17 1991-11-12 E. I. Du Pont De Nemours And Company Process of preparing tantalate X-ray intensifying phosphors with improved efficiency
US5141673A (en) * 1990-12-17 1992-08-25 E. I. Du Pont De Nemours And Company Process of preparing tantalate x-ray intensifying phosphors with improved x-ray to light conversion efficiency

Also Published As

Publication number Publication date
WO1993016146A1 (en) 1993-08-19
EP0580841A1 (de) 1994-02-02
EP0580841B1 (de) 1995-06-07
DE69300179T2 (de) 1995-11-16
JPH06506980A (ja) 1994-08-04
US5154360A (en) 1992-10-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: AGFA-GEVAERT N.V., MORTSEL, BE

8328 Change in the person/name/address of the agent

Free format text: DERZEIT KEIN VERTRETER BESTELLT

8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee