RT

Ryo Toyokuni

SE Seiko Instruments & Electronics: 2 patents #33 of 164Top 25%
UN Unknown: 2 patents #12,644 of 83,584Top 20%
DS Daini Seikosha: 1 patents #64 of 155Top 45%
Overall (All Time): #1,302,068 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4961823 Method of manufacturing calcium carbonate single crystal Shinichi Hirano, Hiroshi Kuroda 1990-10-09
4784717 Method of manufacturing BaPb.sub.1 Shinichi Hirano, Hiroshi Kuroda 1988-11-15
4762588 Method of manufacturing calcium carbonate single crystal Shinichi Hirano, Hiroshi Kuroda 1988-08-09
4350961 Electronic timepiece 1982-09-21