Sure, James, here are a few:
Hida http://www.hidatool.com/wood.html
Hiraide http://www.japanesetools.com/
Iida (in Japan) http://www.japantool-iida.com/
Japan Woodworker http://www.japanwoodworker.com/page.asp?content_id=2896
Misugi Designs http://www.misugidesigns.com/aboutUs.html
Tashiro (I've never used any of these) http://www.tashirohardware.com/