P

Inventor

OYAMA MITSUHIRO

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

YAMAMOTO ELECTRIC IND CO LTD

3 patents
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
US4085692AApr 25, 1978

Motor control apparatus for electrically-driven sewing machine

YAMAMOTO ELECTRIC IND CO LTD2 citations60

TOZEN CORP

2 patents
US6979028B2Dec 27, 2005

Pipe joint

TOZEN CORP13 citations78
US6880861B2Apr 19, 2005

Pipe joint

TOZEN CORP5 citations56

TOSHIBA KK

1 patent
US8032575B2Oct 4, 2011

Digital signal processing apparatus and digital signal processing method

TOSHIBA KK3 citations60

TOZEN SANGYO CO LTD

1 patent
US6773000B2Aug 10, 2004

Vibration isolation spring mount

TOZEN SANGYO CO LTD5 citations59

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