Patents by Inventor Tatuya Fujiyoshi

Tatuya Fujiyoshi 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).

  • Flux used for brazing aluminum-based alloy
    Patent number: 4906307
    Abstract: Fluxes for use in brazing aluminum-based alloy pieces are disclosed. One is a flux which comprises 70 to 90% wt % K.sub.2 SiF.sub.6 and 30 to 10 wt % AlF.sub.3. The other is a flux which comprises 98.5 to 94 wt % base composition which includes K.sub.2 SiF.sub.6 whose amount is 70 to 90 wt % of the base composition and AlF.sub.3 whose amount is 30 to 10 wt % of the base composition; 0.5 to 3 wt % LiF; and 1 to 3 wt % NaF. In order to facilitate the application of the flux to the pieces to be brazed, polybutene is used as a dispersing agent.
    Type: Grant
    Filed: September 20, 1988
    Date of Patent: March 6, 1990
    Assignee: Calsonic Corporation
    Inventor: Tatuya Fujiyoshi