Inventor
Yoichi Amemiya
Inventor
Hachioji, JP
Overview
Patents· 19 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Kprimary
H02KDynamo-electric machines39%
Y10TTechnical subjects covered by former us classification16%
G05BControl or regulating systems in general10%
G01DMeasuring not specially adapted for a specific variable6%
G01PMeasuring linear or angular speed, acceleration, deceleration, or shock6%
B25JManipulators3%
F16CShafts3%
F16DCouplings for transmitting rotation3%
F16HGearing3%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters3%
PatentTitleYear
11,060,565Screw nut20214,796,352'AC servomotor and a method of manufacturing the same'19894,748,360'Rotor for a synchronous motor'19884,714,852'Permanent-magnet field synchronous motor'19874,700,097'Synchronous machine'19874,697,114'Permanent-magnet rotor shrink-fit assembly'19874,663,550'Shaft for an electric motor with DC brake'19874,661,736'Rotor for a synchronous motor'19874,631,807'Method of manufacturing a permanent-magnet field rotor'19864,629,956'System for controlling motors for synchronous operation'19864,626,725'Synchronous rotary machine'19864,551,676'Pulse coder using magnetoresistance elements having an improved z-phase signal pattern'19854,543,506'Permanant magnet field type rotor structure for an electric machine'19854,538,084'Stator of motor'19854,536,649'Photoelectric converter-type pulse encoder'19854,495,464'Non-contacting, speed-detecting device of a direct-current generator type'19854,364,005'Brushless tachometer generator'19824,331,910'Positioning control system'19824,287,460'Positioning control system'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–1985Patents assigned to FUJITSU FANUC LTD (4)· patent assignee history
1981–1989Based in Hachioji, JP· patent location history
1985–1989Patents assigned to FANUC LTD (14)· patent assignee history
2021Patents assigned to THK CO LTD (1)· patent assignee history
2021Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FANUC LTD | 14 | 1985–1989 |
| FUJITSU FANUC LTD | 4 | 1981–1985 |
| THK CO LTD | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hachioji, JP | 18 | 1981–1989 |
| Tokyo, JP | 1 | 2021 |