Inventor

Koichi Seno

Inventor

Yamagata, JP

Overview

11→

Patents

1997–2003

Patent span

Physics

Primary field (CPC G)

Patents· 11 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G11Bprimary

G11BInformation storage based on relative movement between record carrier and transducer77%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters15%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation8%

PatentTitleYear

6,515,821'Floppy disk drive control apparatus capable of ensuring seek operation using a stepping motor having a low torque'2003 6,351,093'Floppy disk drive control apparatus capable of ensuring seek operation using a stepping motor having a low torque'2002 6,150,651'Photointerrupter driving circuit capable of decreasing the number of parts'2000 6,028,740'Structure for preventing head judder of magnetic disk drive'2000 5,952,800'Integrated circuit for a flexible disk drive capable of always recognizing a correct function'1999 5,946,162'DD motor in magnetic disk drive'1999 5,912,789'Cramping structure of guide bar for head carriage in magnetic disk drive'1999 5,805,378'Magnetic disk drive of a structure capable of being lightened in weight'1998 5,661,389'Compact circuit for controlling a floppy disk driver'1997 5,648,883'Disc drive having positional shift adjustment'1997 5,630,008'Control circuit for driving motor with reduced power consumption and disk unit having the control circuit'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2003Patents assigned to MITSUMI ELECTRIC CO LTD (11)· patent assignee history

1997–1998Based in Tendo, JP· patent location history

1997Based in Tendou, JP· patent location history

1999–2003Based in Yamagata, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MITSUMI ELECTRIC CO LTD	11	1997–2003

Locations

Location	Patents	Span
Yamagata, JP	7	1999–2003
Tendo, JP	2	1997–1998
Tendou, JP	2	1997