P

Inventor

YAMAMOTO TAMOTSU

US81 patents
⚠️ This page may combine multiple inventors who share the name “YAMAMOTO TAMOTSU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD

31 patents
US7250746B2Jul 31, 2007

Current mode switching regulator with predetermined on time

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD105 citations98
US6664951B1Dec 16, 2003

Mobile communication terminal equipment and touch panel switch used therein

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD98 citations97
US6518958B1Feb 11, 2003

Electronic apparatus having plural entry switches

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD102 citations97
US7323959B2Jan 29, 2008

Trackball device

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD47 citations92
US7176668B2Feb 13, 2007

Switching regulator with advanced slope compensation

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD33 citations92
US6909422B2Jun 21, 2005

Track ball device and electronic apparatus using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD24 citations92
US6864679B2Mar 8, 2005

Rotary manipulation type input device and electronic apparatus using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD45 citations92
US6794982B2Sep 21, 2004

Multidirectional input device and electronic apparatus comprising it

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD25 citations92
US6750408B2Jun 15, 2004

Multi-directional operation switch and multi-directional input device using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD33 citations92
US6653579B2Nov 25, 2003

Multi-directional input joystick switch

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD24 citations92
US6504269B1Jan 7, 2003

Input device and electronic appliance using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD22 citations92
US6388212B1May 14, 2002

Push and rotary operating type electronic component

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD49 citations92
US6229103B1May 8, 2001

Electronic component with built-in push switch driven by rotary and pushing operation of an operating knob

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD22 citations92
US5951398ASep 14, 1999

Encoder for game machine

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD24 citations92
US5705778AJan 6, 1998

Rotary and pushbutton switch operating mechanism including flexible connection arrangement located between rotor and shaft

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD44 citations92
US5593023AJan 14, 1997

Rotatively-operated electronic component with push switch

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD24 citations92
US7199636B2Apr 3, 2007

Active diode

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD47 citations91
US5613600AMar 25, 1997

Rotatively-operated electronic component with push switch

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD38 citations91
US7292015B2Nov 6, 2007

High efficiency, high slew rate switching regulator/amplifier

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD25 citations88
US7282894B2Oct 16, 2007

Method and apparatus for performing lossless sensing and negative inductor currents in a high side switch

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD15 citations84
US7126318B2Oct 24, 2006

Higher order slope compensation for fixed frequency current mode switching regulators

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations84
US6906269B2Jun 14, 2005

Multi-directional slide switch

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations84
US7295187B2Nov 13, 2007

Electronic apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations83
US7274354B2Sep 25, 2007

Portable electronic apparatus

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD12 citations83
US6857879B2Feb 22, 2005

Coupling device and folding electronic apparatus using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD12 citations83
US7439461B2Oct 21, 2008

Neutral position returning mechanism and input device using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations74
US7067751B2Jun 27, 2006

Switch

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD10 citations74
US5595288AJan 21, 1997

Thin switch including domed contact

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD15 citations74
US5086221AFeb 4, 1992

Rotary encoder having stationary central support shaft

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations74
US5070238ADec 3, 1991

Rotary encoder having circular magnet

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD7 citations74
US6841743B2Jan 11, 2005

Multidirectional control switch and multidirectional input device using the same

MATSUSHITA ELECTRIC INDUSTRIAL CO LTD11 citations73

FUJITSU LTD

9 patents

PANASONIC CORP

2 patents

IKEGAI IRON WORKS LTD

2 patents

OTICS CORP

2 patents

INOUE HIROTO

1 patent

YAMAMOTO TAMOTSU

1 patent

NAKA YOSHIO

1 patent

PANASONIC IP MAN CO LTD

1 patent

Showing the top 50 of 81 patents by PatentIndex Score.