Inventor
AKIYAMA TAKASHI
JP127 patents
⚠️ This page may combine multiple inventors who share the name “AKIYAMA TAKASHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CITIZEN WATCH CO LTD
17 patentsUS6646697B1Nov 11, 2003
Liquid crystal display
CITIZEN WATCH CO LTD186 citations99
US6580479B1Jun 17, 2003
Timepiece
CITIZEN WATCH CO LTD135 citations99
US6271901B1Aug 7, 2001
Liquid crystal display device with two reflective polarizers providing metallic appearance effects
CITIZEN WATCH CO LTD152 citations99
US6577361B1Jun 10, 2003
Liquid crystal display
CITIZEN WATCH CO LTD75 citations98
US7106276B2Sep 12, 2006
Color display device
CITIZEN WATCH CO LTD41 citations93
US6542208B1Apr 1, 2003
Liquid crystal display device
CITIZEN WATCH CO LTD19 citations93
US6297864B1Oct 2, 2001
Liquid crystal display
CITIZEN WATCH CO LTD20 citations93
US6169708B1Jan 2, 2001
Timepiece
CITIZEN WATCH CO LTD32 citations93
US6937301B2Aug 30, 2005
Time piece with power generation function
CITIZEN WATCH CO LTD20 citations92
US6643224B1Nov 4, 2003
Timepiece including multiple liquid crystal displays
CITIZEN WATCH CO LTD36 citations92
US6292439B1Sep 18, 2001
Watch
CITIZEN WATCH CO LTD40 citations92
US6707515B1Mar 16, 2004
Liquid crystal display
CITIZEN WATCH CO LTD28 citations89
US5861862AJan 19, 1999
Liquid crystal display device realizing a small size by reducing number on input/output terminals
CITIZEN WATCH CO LTD17 citations84
US6577360B1Jun 10, 2003
Liquid crystal display
CITIZEN WATCH CO LTD18 citations82
US6064361AMay 16, 2000
Method of driving LCD
CITIZEN WATCH CO LTD11 citations74
US5621479AApr 15, 1997
Method of driving a liquid crystal display device
CITIZEN WATCH CO LTD14 citations74
US10182486B2Jan 15, 2019
LED drive circuit
CITIZEN WATCH CO LTD2 citations73
CITIZEN ELECTRONICS
8 patentsUS7061454B2Jun 13, 2006
Light emitting diode device
CITIZEN ELECTRONICS103 citations95
USD766196SSep 13, 2016
Light-emitting diode
CITIZEN ELECTRONICS13 citations92
USD762182SJul 26, 2016
Light-emitting diode
CITIZEN ELECTRONICS13 citations92
USD789309SJun 13, 2017
Light-emitting diode
CITIZEN ELECTRONICS5 citations84
USD788720SJun 6, 2017
Light-emitting diode
CITIZEN ELECTRONICS6 citations84
USD696798SDec 31, 2013
Lamp
CITIZEN ELECTRONICS6 citations76
US9854631B2Dec 26, 2017
LED illumination device
CITIZEN ELECTRONICS6 citations73
USD788721SJun 6, 2017
Light-emitting diode
CITIZEN ELECTRONICS3 citations73
CITIZEN HOLDINGS CO LTD
4 patentsUS7301591B2Nov 27, 2007
Liquid crystal display device wherein the number of light emitting elements activated differs depending on whether display is performed by the first or second liquid crystal panel
CITIZEN HOLDINGS CO LTD27 citations93
US7248244B2Jul 24, 2007
Color display device emitting each color light for different time period
CITIZEN HOLDINGS CO LTD30 citations93
US9510407B2Nov 29, 2016
LED drive circuit
CITIZEN HOLDINGS CO LTD3 citations73
US9508910B2Nov 29, 2016
LED module
CITIZEN HOLDINGS CO LTD3 citations72
AKIYAMA TAKASHI
4 patentsUS8877407B2Nov 4, 2014
Polymer electrolyte fuel cell and method for producing the same
AKIYAMA TAKASHI18 citations84
US8212176B2Jul 3, 2012
Machining head, nozzle changer and laser beam machining apparatus
AKIYAMA TAKASHI11 citations82
US8389173B2Mar 5, 2013
Method for activating fuel cell
AKIYAMA TAKASHI5 citations73
USD681801SMay 7, 2013
Burner
AKIYAMA TAKASHI5 citations72
NORITZ CORP
3 patentsPANASONIC CORP
3 patentsUS7670705B2Mar 2, 2010
Fuel cell system with purifying apparatus
PANASONIC CORP20 citations92
US7498097B2Mar 3, 2009
Fuel cell and production method thereof
PANASONIC CORP12 citations84
US7604887B2Oct 20, 2009
Electrolyte membrane, membrane electrode assembly using this and fuel cell
PANASONIC CORP14 citations83
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
2 patentsTOYO BOSEKI
2 patentsYOKOGAWA ELECTRIC CORP
1 patentYAMAHA CORP
1 patentKANDA YOSHINORI
1 patentSAKAI KEISUKE
1 patentWATANABE MASASHI
1 patentFUJITSU LTD
1 patentDAIFUKU KK
1 patentShowing the top 50 of 127 patents by PatentIndex Score.