Inventor
MAEDA HIDEO
JP44 patents
⚠️ This page may combine multiple inventors who share the name “MAEDA HIDEO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
17 patentsUS5956302ASep 21, 1999
Optical pick-up device and method using a high-density double diffraction grating
RICOH KK36 citations92
US5812320ASep 22, 1998
Optical encoder having high resolution
RICOH KK18 citations92
US5652426AJul 29, 1997
Optical encoder having high resolution
RICOH KK18 citations92
US5579111ANov 26, 1996
Encoding apparatus for making measurements of two-dimensional displacement of an object
RICOH KK24 citations92
US5574558ANov 12, 1996
Optical encoding apparatus for measuring displacement of an object using diffraction gratings and twice-diffracted and twice-transmitted light
RICOH KK23 citations92
US5331650AJul 19, 1994
Light source device and optical pickup using light source device
RICOH KK22 citations92
US5278817AJan 11, 1994
Optical pick-up for use with an opto-magnetic signal
RICOH KK25 citations92
US5115423AMay 19, 1992
Optomagnetic recording/reproducing apparatus
RICOH KK39 citations92
US5107477AApr 21, 1992
Integrated optical pick-up device
RICOH KK29 citations92
US5101389AMar 31, 1992
Optical information recording/reproducing apparatus
RICOH KK52 citations92
US5060212AOct 22, 1991
Integrated optical pick-up device
RICOH KK36 citations92
US4935911AJun 19, 1990
Optical head device for recording and reproducing information
RICOH KK30 citations92
US5029154AJul 2, 1991
Optical reproducing apparatus
RICOH KK30 citations91
US5097462AMar 17, 1992
Integrated optical pick-up device
RICOH KK17 citations82
US5572323ANov 5, 1996
Infinitesimal displacement measuring apparatus and optical pick-up unit
RICOH KK14 citations74
US5325348AJun 28, 1994
Wavelength converting element and system for recording and reproducing optical information
RICOH KK19 citations74
US5093749AMar 3, 1992
Diffraction grating having incident and emitting side gratings
RICOH KK10 citations74
MITSUBISHI ELECTRIC CORP
7 patentsUS6348280B1Feb 19, 2002
Fuel cell
MITSUBISHI ELECTRIC CORP69 citations96
US6270917B1Aug 7, 2001
Fuel cell
MITSUBISHI ELECTRIC CORP36 citations92
US6500579B1Dec 31, 2002
Fuel cell structure
MITSUBISHI ELECTRIC CORP36 citations89
US7141328B2Nov 28, 2006
Fuel cell
MITSUBISHI ELECTRIC CORP12 citations82
US6329092B1Dec 11, 2001
Polymer electrolyte fuel cell and systems therefor
MITSUBISHI ELECTRIC CORP13 citations73
US5019464AMay 28, 1991
Molten carbonate fuel battery with electrolyte migration control
MITSUBISHI ELECTRIC CORP8 citations73
US7534517B2May 19, 2009
Fuel cell and method for manufacture thereof
MITSUBISHI ELECTRIC CORP4 citations62
SANYO ELECTRIC CO
5 patentsUS5775119AJul 7, 1998
Air conditioner outdoor unit housing
SANYO ELECTRIC CO37 citations88
US5735135AApr 7, 1998
Air conditioner
SANYO ELECTRIC CO12 citations71
US4869075ASep 26, 1989
Air conditioner
SANYO ELECTRIC CO18 citations71
US4669534AJun 2, 1987
Air conditioner
SANYO ELECTRIC CO8 citations68
US4793148ADec 27, 1988
Air conditioning apparatus
SANYO ELECTRIC CO3 citations61
SONY SEMICONDUCTOR SOLUTIONS CORP
4 patentsUS12130158B2Oct 29, 2024
Touch sensor device and electronic device equipped with touch sensor device
SONY SEMICONDUCTOR SOLUTIONS CORP0 citations60
US11336267B2May 17, 2022
Duty ratio correction circuit and signal generation circuit
SONY SEMICONDUCTOR SOLUTIONS CORP0 citations59
US11574160B2Feb 7, 2023
Non-contact communication medium, driving method therefor, and recording medium cartridge
SONY SEMICONDUCTOR SOLUTIONS CORP0 citations51
US11894768B2Feb 6, 2024
DC/DC converter
SONY SEMICONDUCTOR SOLUTIONS CORP0 citations49