YK

Yoshikazu Kawamura

SS Suwa Seikosha: 7 patents #8 of 220Top 4%
SE Seiko Epson: 3 patents #3,864 of 7,774Top 50%
EP Epson: 1 patents #24 of 66Top 40%
Overall (All Time): #528,363 of 4,157,543Top 15%
10
Patents All Time

Issued Patents All Time

Showing 1–10 of 10 patents

Patent #TitleCo-InventorsDate
5038329 Step motor control mechanism for electronic timepiece Minoru Hosokawa, Sakiho Okazaki 1991-08-06
4715725 Step motor control mechanism for electronic timepiece Minoru Hosokawa, Sakiho Okazaki, Hiroshi Ishii 1987-12-29
4599005 Step motor control mechanism for electronic timepiece Minoru Hosokawa, Sakiho Okazaki, Hiroshi Ishii 1986-07-08
4577203 Ink jet recording apparatus 1986-03-18
4522507 Step motor control mechanism for electronic timepiece Minoru Hosokawa, Sakiho Okazaki, Hiroshi Ishii 1985-06-11
4370065 Step motor control mechanism for electronic timepiece Minoru Hosokawa, Sakiho Okazaki, Hiroshi Ishii 1983-01-25
4262353 Transducer for electronic timepiece Sakiho Okazaki 1981-04-14
4227135 Step motor driving circuit 1980-10-07
4212156 Step motor control mechanism for electronic timepiece Minoru Hosokawa, Sakiho Okazaki, Hiroshi Ishii 1980-07-15
4192131 Step motor control mechanism for electronic timepiece Minoru Hosokawa, Hiroshi Ishii, Sakiho Okazaki 1980-03-11