Inventor · disambiguated record
Akio Nakashima
Also filed as: NAKASHIMA AKIO
29 granted patents·5 pending applications·474 citations·filing 1974–2024
97Inventor score
Top patents by PatentIndex Score
34 records- 0192US6416853B1Color-change laminates and toy sets with the use thereofPILOT INK CO LTD·Filed 1999·Granted Jul 9, 2002·102 cites·7 claims
- 0292US6228804B1Color-change materialsPILOT INK CO LTD·Filed 1998·Granted May 8, 2001·99 cites·23 claims
- 0390US8148289B2Titanium oxide photocatalyst and method for producing the sameTANIGUCHI NOBORU·Filed 2008·Granted Apr 3, 2012·9 cites·8 claims
- 0490US6953345B1Water-metachromatic cloth sheet, toy set using the same, and writing instrument for water-metachromatic membersPILOT INK CO LTD·Filed 2000·Granted Oct 11, 2005·26 cites·14 claims
- 0589US5558699AThermochromic color-memory compositionPILOT INK CO LTD·Filed 1994·Granted Sep 24, 1996·56 cites·3 claims
- 0686US6638620B2Reversible thermochromic composition having improved light-fastness and product comprising samePILOT INK CO LTD·Filed 2001·Granted Oct 28, 2003·13 cites·9 claims
- 0784US8518848B2Titanium oxide photocatalyst and method for producing the sameTANIGUCHI NOBORU·Filed 2012·Granted Aug 27, 2013·4 cites·13 claims
- 0883US2024359425A1Method for producing discoloring bodyPILOT INK CO LTD·Filed 2024·Application pending·0 cites
- 0978US7168876B2Writing instrument for water-metachromatic members with detachable pen point holderPILOT INK CO LTD·Filed 2005·Granted Jan 30, 2007·7 cites·3 claims
- 1076US7753680B2Water-discoloring drawing toy and water-discoloring drawing toy set including the samePILOT INK CO LTD·Filed 2007·Granted Jul 13, 2010·5 cites·4 claims
- 1175US5206760AMultiprojection apparatusHITACHI LTD·Filed 1992·Granted Apr 27, 1993·44 cites·6 claims
- 1274US6964807B2Water-metachromatic laminate, and process for its productionPILOT INK CO LTD·Filed 2001·Granted Nov 15, 2005·8 cites·11 claims
- 1372US12083782B2Discoloring body having glossinessPILOT INK CO LTD·Filed 2018·Granted Sep 10, 2024·0 cites·12 claims
- 1470US7985701B2Water-discoloring wall adhering material and water-discoloring wall adhering material set using the samePILOT INK CO LTD·Filed 2007·Granted Jul 26, 2011·5 cites·11 claims
- 1568US6984418B2Water-metachromatic laminate, and process for its productionPILOT INK CO LTD·Filed 2004·Granted Jan 10, 2006·4 cites·2 claims
- 1667US4858030AReproducing apparatus of a video disc playerHITACHI LTD·Filed 1987·Granted Aug 15, 1989·21 cites·19 claims
- 1759US11015076B2Ink composition for reversibly thermochromic stamp and stampPILOT CORPORATION KK·Filed 2015·Granted May 25, 2021·1 cites·9 claims
- 1859US2010248585A1Drawing toy and drawing toy set using the samePILOT INK CO LTD·Filed 2007·Application pending·0 cites
- 1958US7632564B2Liquid composition for metachromatic members, and metachromatic member set making use of the samePILOT INK CO LTD·Filed 2004·Granted Dec 15, 2009·5 cites·14 claims
- 2057US9346044B2Copper-based catalyst precursor, method for manufacturing same, and hydrogenation methodKURARAY CO·Filed 2013·Granted May 24, 2016·0 cites·15 claims
- 2156US8943694B2Accessory making device, accessory making kit, and method for making accessoryKOBAYASHI NATSUKO·Filed 2010·Granted Feb 3, 2015·1 cites·7 claims
- 2255US7056570B2Water-metachromatic laminate, and process for its productionPILOT INK CO LTD·Filed 2004·Granted Jun 6, 2006·4 cites·10 claims
- 2355US2007086832A1Writing instrument for water-metachromatic members with detachable pen point holderPILOT INK CO LTD·Filed 2006·Application pending·0 cites
- 2453US4328514ACRT Drive circuit comprising white and black level clamping circuitryHITACHI LTD·Filed 1980·Granted May 4, 1982·10 cites·6 claims
- 2552US8025961B2Liquid composition for metachromatic members, and metachromatic member set making use of the samePILOT INK CO LTD·Filed 2008·Granted Sep 27, 2011·0 cites·12 claims
- 2648US5418575AColor display apparatus having compensating unitHITACHI LTD·Filed 1994·Granted May 23, 1995·11 cites·8 claims
- 2747US5858914AThermochromic coloring color-memory footwearPILOT INK CO LTD·Filed 1996·Granted Jan 12, 1999·26 cites·6 claims
- 2846US3979641AVertical deflection output circuitry for television receiverHITACHI LTD·Filed 1974·Granted Sep 7, 1976·7 cites·8 claims
- 2945US2023154307A1Accident sign detection system and accident sign detection methodPANASONIC IP MAN CO LTD·Filed 2021·Application pending·0 cites
- 3044US2002150737A1Water-discoloring printed matter and water-discoloring toy employing the samePILOT INK CO LTD·Filed 2002·Application pending·0 cites
- 3143US4745494ASystem for correcting time base error of information reproducing apparatusHITACHI VIDEO ENG·Filed 1986·Granted May 17, 1988·5 cites·23 claims
- 3237US8147959B2Color-change laminateNAKASHIMA AKIO·Filed 2008·Granted Apr 3, 2012·0 cites·9 claims
- 3326US3950672ACircuit for producing correctly timed vertical blanking pulses from a vertical sweep circuitNIPPON ELECTRIC CO·Filed 1974·Granted Apr 13, 1976·1 cites·6 claims
- 3420US4550348AVideo disc player skip/arm servo systemHITACHI LTD·Filed 1985·Granted Oct 29, 1985·0 cites·1 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →