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Yamanashi, Japan

Akira Hirai

USPTO Granted Patents = 9 (Patent Applications = 1)

Average Co-Inventor Count = 3.4

ph-index = 3

Forward Citations = 32(Granted Patents)

Location History:

Minamitsuru-gun, JP (2011 - 2013)
Yamanashi, JP (2001 - 2019)

Company Filing History:

Fanuc Corporation

Years Active: 2001-2019

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10425031 - Motor driver having function of detecting insulation resistance (2019-09-24),

2. 9899954 - Motor drive apparatus having function of detecting failure of electric shunt (2018-02-20),

3. 9846190 - Motor drive device including function to detect failure in insulation resistance deterioration detection unit of motor, and failure detection method (2017-12-19),

4. 9762171 - Motor drive device having insulation resistance detecting function and method of detecting insulation resistance of motors (2017-09-12),

5. 9716461 - Motor drive having function of detecting circuit abnormality owing to entering foreign matter before significant abnormality occurs (2017-07-25),

6. 9404974 - Motor drive device including insulation deterioration detection function and insulation resistance detection method of motor (2016-08-02),

7. 8350713 - Numerical controller having a function for determining machine abnormality from signals obtained from a plurality of sensors (2013-01-08),

8. 7898264 - Motor insulation deterioration detection device (2011-03-01),

9. 6313593 - Motor controller (2001-11-06),

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