P

Inventor

SOEDA KATSUJI

13 patents
⚠️ This page may combine multiple inventors who share the name “SOEDA KATSUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

YAMAMOTO ELECTRIC IND CO LTD

8 patents
US4274037AJun 16, 1981

Motor speed control system

YAMAMOTO ELECTRIC IND CO LTD15 citations72
US4251796AFeb 17, 1981

Slide-type potentiometer

YAMAMOTO ELECTRIC IND CO LTD12 citations71
US4246521AJan 20, 1981

DC Motor speed control system

YAMAMOTO ELECTRIC IND CO LTD9 citations71
US4168455ASep 18, 1979

Motor speed control system

YAMAMOTO ELECTRIC IND CO LTD17 citations70
US4170749AOct 9, 1979

Speed control circuit for a series motor

YAMAMOTO ELECTRIC IND CO LTD6 citations61
US4085692AApr 25, 1978

Motor control apparatus for electrically-driven sewing machine

YAMAMOTO ELECTRIC IND CO LTD2 citations60
US4143605AMar 13, 1979

Motor driven sewing machine

YAMAMOTO ELECTRIC IND CO LTD4 citations59
US4142472AMar 6, 1979

Control apparatus for an electrically driven sewing machine with stitch pattern producing device

YAMAMOTO ELECTRIC IND CO LTD4 citations59

YAMAMOTO DENKI KK

3 patents
US5200729AApr 6, 1993

Permanent magnet and magnetization apparatus for producing the permanent magnet

YAMAMOTO DENKI KK27 citations88
US4804900AFeb 14, 1989

Control apparatus for synchronous motors

YAMAMOTO DENKI KK20 citations80
US4952860AAug 28, 1990

Motor control system

YAMAMOTO DENKI KK13 citations72

YAMAMOTO ELECTRIC IND LTD

1 patent
US4228383AOct 14, 1980

Speed control circuit arrangement for an AC commutator motor

YAMAMOTO ELECTRIC IND LTD5 citations56

YAMAMOTO ELECTRIC IND CO INC

1 patent
US4078507AMar 14, 1978

Electrically driven sewing machine control apparatus

YAMAMOTO ELECTRIC IND CO INC0 citations32