Patents for C23D 3 - Chemical treatment of the metal surfaces prior to coating (148)
04/1999
04/15/1999DE19745162A1 Pretreating workpiece in an electrophoretic dip enameling process activating bath
11/1998
11/11/1998CN1198368A Surface treatment method, decorative article and electronics device
09/1998
09/23/1998EP0866147A1 Process for manufacturing an object made from a steel sheet and enameled in direct mode
09/21/1998CA2234433A1 Process for direct preparation of objects made out of enamelled sheet steel
07/1998
07/15/1998EP0853141A2 Method for surface treatment, an ornament and a device
06/1998
06/16/1998US5766374 Sequentially forming a steel sheet, pickling, amorphous phosphatizing, nickel plating and enameling; antisludge agents; bonding strength
11/1997
11/20/1997DE19715408A1 Pretreating metallic parts before deep drawing
11/18/1997US5688340 Preparation of metal surfaces for vitreous enameling
04/1997
04/02/1997EP0765952A1 Process for preparing the metallic surface of an object, especially a steel sheet, for a direct enamelling
03/1997
03/29/1997CA2186327A1 Process for the metallic surface treatment of an article, particularly stainless steel sheet article, for direct mode enamelling
09/1996
09/12/1996WO1996027694A1 Member having composite coating and process for producing the same
02/1996
02/28/1996EP0698675A1 Preparing metal surfaces for enamelling
11/1995
11/02/1995DE19515425A1 Water storage tank with reduced faults in the enamelling without cost increase.
10/1995
10/04/1995EP0434849B1 Method of producing steel sheets for porcelain enamelling having improved enamel adhesion property
05/1995
05/03/1995CN1102221A Oil-firing pretreatment process for enamelling
04/1995
04/19/1995EP0648863A1 Enamellable oxide layer
03/1995
03/01/1995EP0640697A1 Water tank and procedure for its fabrication
08/1994
08/24/1994EP0611834A1 Aluminium based substrate for enamelling
02/1993
02/17/1993CN1069078A Anticorrosive technology for ferrous metal surface
12/1992
12/01/1992US5167988 For use in exhaust systems of internal engines
10/1992
10/06/1992US5152846 Hot and cold rolling to recrystallization annealing
07/1991
07/03/1991EP0434849A1 Method of producing steel sheets for porcelain enamelling having improved enamel adhesion property
01/1991
01/20/1991WO1991001390A1 Method of manufacturing enameling steel sheet excellent in adhesiveness
01/20/1991CA2036374A1 Method of producing steel sheets for porcelain enameling having improved enamel adhesion property
11/1990
11/29/1990DE3917596A1 Forming stable oxide intermediate layer on titanium - to be coated with ceramic by heating with slip contg. antimony oxide
02/1990
02/14/1990CN1039677A Process for continuously enamelling wire of aluminium alloy which are intended for production of electrical coils
02/07/1990EP0354132A1 Process for continuously enamelling pieces made of an aluminium alloy for making electrical windings
07/1989
07/05/1989CN2040497U Enamel container
05/1988
05/24/1988US4746533 Process for coating a metallic surface with a vitreous enamel
04/1988
04/26/1988US4740388 Painting method by spraying glassy material
01/1986
01/28/1986US4567067 Deposition of nickel sulfate to improve adhesion
06/1983
06/22/1983EP0081847A1 Enameling process
09/1982
09/01/1982EP0059023A1 Process for improving the corrosion resistance of a ferrous metal body
05/1980
05/27/1980US4204931 Zinc, dentistry
08/1979
08/07/1979CA1059881A1 Formation of nickel phosphate coatings on iron or steel
03/1979
03/27/1979CA1051371A1 Direct-on ceramic coating of carbon-rich iron
02/1979
02/20/1979CA1048871A1 Process of treating sheet steel
10/1978
10/24/1978US4121979 Metal treatment
12/1977
12/20/1977US4063968 Formation of nickel phosphate coatings on iron or steel
09/1977
09/06/1977US4046646 Activation bath containing metal salt nobler than iron, galvanizing bath containing zinc salt
03/1977
03/15/1977US4012239 Process for treating steel sheets for the purpose of enamelling the sheets
09/1976
09/28/1976US3983274 Aluminum-copper-nickel alloy for the production of heat resistant pans and utensils coated with enamels and/or other non-metallic materials and corresponding aluminous metal articles
07/1976
07/27/1976US3971120 Direct-on ceramic coating of carbon-rich iron
06/1976
06/08/1976US3962490 Preparation of nickel and chromium substrates for ceramic coating
05/1976
05/18/1976US3957669 Benzene sulphinic acid as etchant
05/11/1976US3956536 Degreasing, pickling, nickel plating
02/1976
02/17/1976US3939295 Protective coatings and frits therefor
01/1976
01/13/1976US3932237 Method for forming an insulating glass film on surfaces of an oriented silicon steel sheet
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