Patents Examined by Alexander Maruff
  • Process for inhibiting corrosion
    Patent number: 5626818
    Abstract: A mixture of propyleneglycolmethylether and propyleneglycolether which is added in a ratio of 60:40 and 90:10 to the last rinsing bath in which metal parts are cleaned, in order to achieve intermediate corrosion resistance.
    Type: Grant
    Filed: June 3, 1996
    Date of Patent: May 6, 1997
    Assignee: Dr. O.K. Wack Chemie GmbH
    Inventors: Oskar K. Wack, Martin Hanek