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Inventor

Hiroshi Hagino

Inventor
Omiya, JP

Overview

6→
Patents
1978–2007
Patent span
Physics
Primary field (CPC G)

Patents· 6 as inventor

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

G01Dprimary
G01DMeasuring not specially adapted for a specific variable25%
H02KDynamo-electric machines25%
G01PMeasuring linear or angular speed, acceleration, deceleration, or shock13%
G02BOptical elements, systems or apparatus13%
G11BInformation storage based on relative movement between record carrier and transducer13%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters13%
PatentTitleYear
7,268,536'Magnetic linear position sensor'20077,023,202'Magnetic rotary position sensor'20066,434,293'Rotary light coupler'20024,435,673'DC Brushless motor and its driving control system'19844,306,259'Flexible-disc drive spindle assembly with brushless DC motor'19814,109,170'Electric motor having frequency generator'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978Patents assigned to HITACHI LTD (1)· patent assignee history
1978–1984Based in Omiya, JP· patent location history
1981–2007Patents assigned to JAPAN SERVO (5)· patent assignee history
2002Based in Yoni, JP· patent location history
2006–2007Based in Kiryu, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
JAPAN SERVO51981–2007
HITACHI LTD11978
Locations
LocationPatentsSpan
Omiya, JP31978–1984
Kiryu, JP22006–2007
Yoni, JP12002