|Application No.||Application Title||Issue Date|
|20130122238||CHROMIUM-FREE RUST-INHIBITIVE SURFACE TREATMENT AGENT FOR METAL PARTS WITH ZINC SURFACES AND METAL PARTS WITH ZINC SURFACES COATED WITH RUST-INHIBITIVE SURFACE COATED FILM|
Disclosed is a chromium-free rust-inhibitive surface treatment agent to form a siliceous film that rarely cracks or peels off and yields an excellent rust-inhibitive performance on zinc surfaces of a metal part. The chromium-free rust-inhibitive surface treatment agent ...
|20110143130||CHROMIUM-FREE METAL SURFACE TREATMENT AGENT|
Provided is a chromium-free metal surface treatment agent excellent in rust inhibitive performance which can be used in a surface treatment of metal products, in particular, galvanized metal products. The metal surface treatment agent consists essentially of a siliceous...
|20080102212||CHROMIUM-FREE RUST INHIBITIVE TREATMENT METHOD FOR METAL PRODUCTS HAVING ZINC SURFACE AND METAL PRODUCTS TREATED THEREBY|
Provided is a chromium-free surface treatment method which imparts practical rust inhibitive performance to a metal product having a zinc surface to which it was difficult to impart rust inhibitive performance of practical level. A conversion-coated film of zinc phospha...