Global Patent Index - EP 0936631 A3

EP 0936631 A3 2000-11-22 - Carrier for radionuclides, method for fabricating the same and miniaturized radioactive source

Title (en)

Carrier for radionuclides, method for fabricating the same and miniaturized radioactive source

Title (de)

Trägermaterial für Radionuklide, Verfahren zur Herstellung desselben und miniaturisierte radioaktive Strahlungsquelle

Title (fr)

Support pour radionuclides, procédé de fabrication et source radioactive miniaturisée

Publication

EP 0936631 A3 (DE)

Application

EP 98250451 A

Priority

DE 19807604 A

Abstract (en)

[origin: DE19807604C1] A porous carrier for radioactive substances is made by mixing titanium dioxide, zirconium dioxide, aluminium oxide or silicon dioxide with a polysaccharide and water, followed by kneading, drying and tempering at 800-1300 deg C. Preparation of a carrier for radioactive substances comprises dry mixing of a solid carrier with a polysaccharide in a ratio of 6:4 - 9:1, followed by addition of enough water to allow kneading of the mixture. Once it has been homogenized, the mixture is dried and tempered at 800-1300 deg C to give a porous structure. An Independent claim is also included for a miniaturized radioactive source with an activity of 12-15 (preferably 20) mCi/mm<3>, which is made by soaking the carrier of the invention in a radionuclide solution, followed by tempering for a short period at 800 deg C and then at 1000-1300 deg C.

IPC 1-7 (main, further and additional classification)

G21G 4/06; G21G 4/08

IPC 8 full level (invention and additional information)

A61M 36/04 (2006.01); G21G 4/08 (2006.01)

CPC (invention and additional information)

G21G 4/08 (2013.01)

Citation (search report)

  • [A] US 5415775 A 19950516 - CASTILLON ROGER [FR], et al
  • [A] US 5015615 A 19910514 - DELLER KLAUS [DE], et al
  • [A] DATABASE WPI Section Ch Week 199151, Derwent Publications Ltd., London, GB; Class A97, AN 1991-373936, XP002136707
  • [A] DATABASE WPI Section Ch Week 197415, Derwent Publications Ltd., London, GB; Class E33, AN 1974-27812V, XP002136708

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19807604 C1 19990729; EP 0936631 A2 19990818; EP 0936631 A3 20001122

INPADOC legal status


2004-06-09 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031209

2001-08-08 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: BE DE FR GB NL

2001-05-23 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010326

2000-11-22 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-11-22 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI

2000-11-22 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7G 21G 4/06 A, 7G 21G 4/08 B

1999-08-18 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): BE DE FR GB NL

1999-08-18 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI