YH

Yoshihiko Hirayama

SI Seiko Instruments: 2 patents #605 of 1,437Top 45%
DS Daini Seikosha: 1 patents #64 of 155Top 45%
NC Nagase & Co.: 1 patents #50 of 127Top 40%
Overall (All Time): #1,284,093 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5969186 Process for racemizing of optically active amines Toru Inoue 1999-10-19
5103406 Image printing system 1992-04-07
5099258 Dot print density regulating circuit 1992-03-24
4315332 Electronic timepiece radio Ryoichiro Sakami 1982-02-09