Patents by Inventor Tomoyuki Manmi

Tomoyuki Manmi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Nonsludging zinc phosphating composition and process
    Patent number: 7422629
    Abstract: Electrolysis using a suitable electrolyte provides a completely nonsludging zinc phosphate conversion coating process that produces a high quality conversion coating in a very short time. The suitable electrolyte contains at least water, dissolved nitric acid, and dissolved zinc cations and optionally also contains m chemically distinct species of cations other than zinc and n chemically distinct species of anions other than anions derivable by ionization of phosphoric and nitric acids, each of m and n independently being zero or a positive integer.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: September 9, 2008
    Assignee: Henkel Kommanditgesellschaft Auf Aktien
    Inventors: Jun Kawaguchi, Kazuhiro Ishikura, Tomoyuki Manmi