Patents Assigned to Houghton Metal Finishing Company
  • METHODS AND COMPOSITIONS FOR ACID TREATMENT OF A METAL SURFACE
    Publication number: 20090090635
    Abstract: The invention relates to compositions and methods that are useful in etching a metal surface. In particular, the invention relates to novel acid compositions and methods of using such compositions in etching a metal surface, preferably an aluminum surface prior to anodizing to dissolve impurities, imperfections, scale, and oxide. The compositions are effective in maintaining their etching capacity and in removing smut produced by the etching of a surface as well as in general cleaning.
    Type: Application
    Filed: December 17, 2008
    Publication date: April 9, 2009
    Applicant: Houghton Metal Finishing Company
    Inventor: Mores Basaly
  • Sealant composition
    Patent number: 6506263
    Abstract: An aqueous composition for sealing anodically oxidized aluminum surfaces is described. The composition contains at least one surfactant, a magnesium salt, and a cobalt(II) salt. This composition demonstrates enhanced sealant properties. A method for sealing anodically oxidized aluminum surfaces is also described. In this method, the aluminum is contacted with a composition containing at least one surfactant, a magnesium salt and a cobalt(II) salt.
    Type: Grant
    Filed: November 17, 2000
    Date of Patent: January 14, 2003
    Assignee: Houghton Metal Finishing Company
    Inventors: Mores Basaly, Dana Rothwell