Inventor · disambiguated record
Akira Tsuboyama
Also filed as: TSUBOYAMA AKIRA
153 granted patents·20 pending applications·5,795 citations·filing 1985–2025
99Inventor score
Top patents by PatentIndex Score
173 records- 0199US7094477B2Luminescence device and display apparatusCANON KK·Filed 2005·Granted Aug 22, 2006·79 cites·3 claims
- 0299US6921915B2Metal coordination compound, luminescence device and display apparatusCANON KK·Filed 2002·Granted Jul 26, 2005·1k cites·5 claims
- 0399US4775225ALiquid crystal device having pillar spacers with small base periphery width in direction perpendicular to orientation treatmentCANON KK·Filed 1986·Granted Oct 4, 1988·462 cites·5 claims
- 0498US7238435B2Polymeric compound and organic luminescence deviceCANON KK·Filed 2002·Granted Jul 3, 2007·74 cites·7 claims
- 0598US7220495B2Luminescence device, display apparatus and metal coordination compoundCANON KK·Filed 2004·Granted May 22, 2007·65 cites·3 claims
- 0698US7147935B2Luminescence device and display apparatusCANON KK·Filed 2002·Granted Dec 12, 2006·133 cites·33 claims
- 0797US8067099B2Phosphorescent material, and organic electroluminescent device and image display apparatus using sameWATANABE TAIKI·Filed 2008·Granted Nov 29, 2011·113 cites·7 claims
- 0896US7544426B2Luminescence device and display apparatusCANON KK·Filed 2006·Granted Jun 9, 2009·22 cites·5 claims
- 0996US7527879B2Luminescence device and display apparatusCANON KK·Filed 2007·Granted May 5, 2009·19 cites·3 claims
- 1096US7446471B2OLED provided with organic layer comprising first and second dopants based on iridium organic complex compoundsCANON KK·Filed 2006·Granted Nov 4, 2008·19 cites·2 claims
- 1196US6953628B2Luminescence device and display apparatusCANON KK·Filed 2002·Granted Oct 11, 2005·115 cites·3 claims
- 1296US6821646B2Luminescence device, display apparatus and metal coordination compoundCANON KK·Filed 2001·Granted Nov 23, 2004·100 cites·6 claims
- 1396US4712877AFerroelectric display panel of varying thickness and driving method thereforCANON KK·Filed 1986·Granted Dec 15, 1987·147 cites·41 claims
- 1495US7910227B2Light emitting device having dopants in a light emitting layerCANON KK·Filed 2008·Granted Mar 22, 2011·14 cites·7 claims
- 1595US7790299B2Light emitting device having dopants in a light emitting layerCANON KK·Filed 2008·Granted Sep 7, 2010·15 cites·11 claims
- 1695US7687155B2Luminescence device and display apparatusCANON KK·Filed 2007·Granted Mar 30, 2010·15 cites·2 claims
- 1795US6780528B2Luminescence device and metal coordination compound thereforCANON KK·Filed 2001·Granted Aug 24, 2004·146 cites·1 claims
- 1894US7736758B2Light emitting device having dopants in a light emitting layerCANON KK·Filed 2008·Granted Jun 15, 2010·12 cites·13 claims
- 1994US6797980B2Metal coordination compound, luminescence device and display apparatusCANON KK·Filed 2001·Granted Sep 28, 2004·38 cites·8 claims
- 2094US5606343ADisplay deviceCANON KK·Filed 1994·Granted Feb 25, 1997·135 cites·9 claims
- 2191US6838818B2Light emitting device having a dopant in a light emitting layer and method of producing the light emitting deviceCANON KK·Filed 2002·Granted Jan 4, 2005·46 cites·14 claims
- 2291US5058994ALiquid crystal apparatusCANON KK·Filed 1988·Granted Oct 22, 1991·59 cites·13 claims
- 2391US4796979AFerroelectric liquid crystal device having dual laminated alignment filmsCANON KK·Filed 1987·Granted Jan 10, 1989·82 cites·55 claims
- 2490US6815091B2Luminescence device, display apparatus and metal coordination compoundCANON KK·Filed 2001·Granted Nov 9, 2004·48 cites·10 claims
- 2590US4902107AFerroelectric liquid crystal optical device having temperature compensationCANON KK·Filed 1989·Granted Feb 20, 1990·75 cites·11 claims
- 2690US4744639AFerroelectric liquid crystal device having a flattening layerCANON KK·Filed 1985·Granted May 17, 1988·75 cites·37 claims
- 2790US4728176AFerroelectric liquid crystal device with metallic auxiliary electrodes provided adjacent to the transparent electrodesCANON KK·Filed 1986·Granted Mar 1, 1988·77 cites·15 claims
- 2889US5013137AFerroelectric liquid crystal device having increased tilt angleCANON KK·Filed 1989·Granted May 7, 1991·68 cites·29 claims
- 2989US4932757AFerroelectric liquid crystal deviceCANON KK·Filed 1988·Granted Jun 12, 1990·66 cites·13 claims
- 3088US7928650B2Organic EL display apparatusCANON KK·Filed 2009·Granted Apr 19, 2011·11 cites·2 claims
- 3188US7166958B2Light emitting device having dopant in a light emitting layer, and method of producing the light emitting deviceCANON KK·Filed 2004·Granted Jan 23, 2007·30 cites·4 claims
- 3288US6824894B2Metal coordination compound and electroluminescence deviceCANON KK·Filed 2002·Granted Nov 30, 2004·40 cites·8 claims
- 3388US6812497B2Organic light emitting deviceCANON KK·Filed 2003·Granted Nov 2, 2004·44 cites·15 claims
- 3488US5583534AMethod and apparatus for driving liquid crystal display having memory effectCANON KK·Filed 1994·Granted Dec 10, 1996·78 cites·26 claims
- 3587US6714212B1Display apparatusCANON KK·Filed 1997·Granted Mar 30, 2004·86 cites·28 claims
- 3687US5035491ALiquid crystal apparatusCANON KK·Filed 1990·Granted Jul 30, 1991·81 cites·32 claims
- 3786US8076841B2Organic electroluminescent display apparatusSHIOBARA SATORU·Filed 2009·Granted Dec 13, 2011·10 cites·2 claims
- 3885US7189466B2Organic light-emitting element and display deviceCANON KK·Filed 2003·Granted Mar 13, 2007·32 cites·3 claims
- 3985US4820026AFerroelectric liquid crystal device with modified polyvinyl alcohol alignment filmCANON KK·Filed 1987·Granted Apr 11, 1989·46 cites·49 claims
- 4084US8076681B2White organic electroluminescent deviceMORI TOSHIFUMI·Filed 2009·Granted Dec 13, 2011·12 cites·4 claims
- 4184US7459559B2Metal complex and organic light-emitting deviceCANON KK·Filed 2007·Granted Dec 2, 2008·9 cites·3 claims
- 4284US6991857B2Metal coordination compound, luminescence device and display apparatusCANON KK·Filed 2001·Granted Jan 31, 2006·11 cites·3 claims
- 4384US5963190ADriving method for display device and display apparatusCANON KK·Filed 1997·Granted Oct 5, 1999·74 cites·24 claims
- 4484US4778259AFerroelectric liquid crystal devices having reverse twist angle and stable states resulting from A.C. excitationCANON KK·Filed 1986·Granted Oct 18, 1988·55 cites·32 claims
- 4583US8920943B2Luminescence device and display apparatusKAMATANI JUN·Filed 2009·Granted Dec 30, 2014·4 cites·13 claims
- 4683US7691493B2Polymeric compound and organic luminescence deviceCANON KK·Filed 2005·Granted Apr 6, 2010·7 cites·2 claims
- 4783US7108924B2Polymer compound and electroluminescent elementCANON KK·Filed 2003·Granted Sep 19, 2006·22 cites·9 claims
- 4883US5041821AFerroelectric liquid crystal apparatus with temperature dependent DC offset voltageCANON KK·Filed 1990·Granted Aug 20, 1991·51 cites·21 claims
- 4983US4721367ALiquid crystal deviceCANON KK·Filed 1986·Granted Jan 26, 1988·38 cites·28 claims
- 5083US4712875ADimensions of spacer particles for a ferroelectric liquid crystal displayCANON KK·Filed 1986·Granted Dec 15, 1987·49 cites·11 claims
Showing the top 50 of 173 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Akira Tsuboyama files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →