Inventor
Motohiro Shiga
Inventor
Hitachi, JP
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Hprimary
G01HMeasurement of mechanical vibrations or ultrasonic, sonic or infrasonic waves25%
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids17%
G01MTesting static or dynamic balance of machines or structures17%
F01DNon-positive displacement machines or engines, e.g. steam turbines8%
F04BPositive-displacement machines for liquids8%
F16FSprings8%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%
Y10TTechnical subjects covered by former us classification8%
PatentTitleYear
5,230,616'Rotary compressor with shaft balancers'19934,915,554'Hermetic rotary compressor with balancing weights'19904,453,407'Vibration diagnosis method and apparatus for rotary machines'19844,448,077'Vibration diagnosis method for rotary machine'19844,435,770'Vibration diagnosing method and apparatus for a rotary machine'19844,098,127'Balancing method for use in multiple-span rotor shaft system and balancing system using same'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1993Patents assigned to HITACHI LTD (6)· patent assignee history
1978–1993Based in Hitachi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 6 | 1978–1993 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachi, JP | 6 | 1978–1993 |