(19)
(11) EP 2 041 335 A1

(12)

(43) Date of publication:
01.04.2009 Bulletin 2009/14

(21) Application number: 06847451.9

(22) Date of filing: 07.09.2006
(51) International Patent Classification (IPC): 
C25B 1/46(2006.01)
C25B 15/00(2006.01)
(86) International application number:
PCT/US2006/027517
(87) International publication number:
WO 2008/030216 (13.03.2008 Gazette 2008/11)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL BA HR MK RS

(71) Applicant: PPG Industries Ohio, Inc.
Cleveland, OH 44111 (US)

(72) Inventors:
  • SCHUSSLER, Henry W.
    Harrison City, PA 15636 (US)
  • CIMINI, Joseph R.
    Lake Charles, LA 70605 (US)
  • FAST, Robert A.
    Westlake, LA 70669 (US)
  • GARRARD, Berry G.
    Lake Charles, LA 70612 (US)
  • RICHARDSON, Steven T.
    Lake Charles, LA 70605 (US)

(74) Representative: Polypatent 
Braunsberger Feld 29
51429 Bergisch Gladbach
51429 Bergisch Gladbach (DE)

   


(54) METHOD OF OPERATING A DIAPHRAGM ELECTROLYTIC CELL