(19)
(11) EP 1 431 282 B8

(12) CORRECTED EUROPEAN PATENT SPECIFICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 3 (W3 B1)

(48) Corrigendum issued on:
12.11.2008 Bulletin 2008/46

(45) Mention of the grant of the patent:
05.12.2007 Bulletin 2007/49

(21) Application number: 02772918.5

(22) Date of filing: 26.09.2002
(51) International Patent Classification (IPC): 
C07C 315/04(2006.01)
 C07C 317/22(2006.01)
(86) International application number:
PCT/JP2002/009920
(87) International publication number:
WO 2003/029204 (10.04.2003 Gazette 2003/15)

(54)

PROCESS FOR PRODUCING MIXTURE OF DIHYDROXYDIPHENYLSULFONE ISOMERS

VERFAHREN ZUR HERSTELLUNG EINER MISCHUNG VON DIHYDROXYDIPHENYLSULFONISOMEREN

PROCEDE POUR PRODUIRE UN MELANGE D'ISOMERES DE DIHYDROXYDIPHENYLSULFONE

(84) Designated Contracting States:
DE FR GB

(30) Priority: 28.09.2001 JP 2001300933
28.09.2001 JP 2001300942

(43) Date of publication of application:
23.06.2004 Bulletin 2004/26

(73) Proprietor: KONISHI CHEMICAL IND. CO., LTD.
Wakayama 641-0007 (JP)

(72) Inventors:
  • OI, Fumio
    Wakayama-shi, Wakayama 641-0007 (JP)
  • YANASE, Norio
    Wakayama-shi, Wakayama 641-0007 (JP)
  • YAMAMOTO, Masamichi
    Wakayama-shi, Wakayama 641-0007 (JP)

(74) Representative: Müller-Boré & Partner Patentanwälte 
Grafinger Strasse 2
81671 München
81671 München (DE)


(56) References cited: : 
EP-A1- 0 220 004
EP-A1- 0 627 415
JP-A- 10 025 277
JP-A- 50 116 446
 EP-A1- 0 461 272
EP-A1- 0 755 920
JP-A- 10 139 756
US-A- 4 996 367
   
  • YOSHIHIRO YOSHII ET AL.: 'Phenol no sulfon-ka oyobi hydroxyphenyl sulfonyl-ka no haikosei' JOURNAL OF THE CHEMICAL SOCIETY OF JAPAN no. 1, 1985, pages 70 - 74, XP002963481
   
Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).