EP 0244022 A3 19890315 - AFTER-TREATMENT PROCESS FOR PHOSPHATED METAL SURFACES
Title (en)
AFTER-TREATMENT PROCESS FOR PHOSPHATED METAL SURFACES
Publication
Application
Priority
JP 9590986 A 19860426
Abstract (en)
[origin: US4728401A] An improved process for preparing a phosphated metal surface for painting comprises electrolyzing the surface as cathode in an aqueous solution containing hexavalent and trivalent chromium in specified concentrations and weight ratios.
IPC 1-7
IPC 8 full level
B05D 3/10 (2006.01); B05D 7/14 (2006.01); C23C 22/24 (2006.01); C23C 22/83 (2006.01); C25D 11/38 (2006.01)
CPC (source: EP US)
C23C 22/83 (2013.01 - EP US); C25D 11/38 (2013.01 - EP US)
Citation (search report)
- [A] GB 988985 A 19650414 - PYRENE CO LTD
- [A] FR 1303317 A 19620907 - AMCHEM S A
- [A] FR 84488 E 19650219 - AMCHEM S A
- [A] US 3296100 A 19670103 - SHIGERU YONEZAKI, et al
- [AP] EP 0224065 A1 19870603 - NIHON PARKERIZING [JP]
Designated contracting state (EPC)
AT BE CH DE ES FR IT LI NL SE
DOCDB simple family (publication)
US 4728401 A 19880301; AU 586331 B2 19890706; AU 7195187 A 19871029; CA 1314511 C 19930316; DE 3713426 A1 19871029; EP 0244022 A2 19871104; EP 0244022 A3 19890315; JP H0633465 B2 19940502; JP S62254880 A 19871106; PT 84762 A 19870501; PT 84762 B 19891229
DOCDB simple family (application)
US 4043287 A 19870420; AU 7195187 A 19870424; CA 535132 A 19870421; DE 3713426 A 19870422; EP 87200762 A 19870423; JP 9590986 A 19860426; PT 8476287 A 19870424