Patents Represented by Attorney, Agent or Law Firm Michael S. Brodbine
  • Method for phosphatizing iron and steel
    Patent number: 6361623
    Abstract: A high quality lubricant carrier for lubrication in cold plastic working of iron and steel is provided by a process in which the surfaces of objects to be worked are first treated with a surface conditioning liquid composition that contains dispersed fine particles of at least one of a Jernstedt salt, zinc phosphate, zinc calcium phosphate, and calcium phosphate, and is then treated by a phosphatizing solution that contains calcium cations.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: March 26, 2002
    Assignee: Henkel Corporation
    Inventors: Kazuhiro Ishikura, Manabu Kumagaya, Takaomi Nakayama