SM

Seiki Maruta

NA Nabco: 2 patents #16 of 74Top 25%
NC Nippon Air Brake Co.: 2 patents #23 of 107Top 25%
Overall (All Time): #1,284,175 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5975649 Brake monitoring device for railroad cars Shigeaki Doto 1999-11-02
5803554 Brake monitoring device for railroad cars Shigeaki Doto 1998-09-08
5253930 Air brake control system having an electromagnetic valve device which has two set points for establishing a lap position Asaji Imanaka 1993-10-19
4799740 Electropneumatic master controller for an air brake system Akihiro Iwaizako, Hiroshi Nishii 1989-01-24