Inventor · disambiguated record
Shuji Ichikawa
Also filed as: ICHIKAWA SHUJI
29 granted patents·9 pending applications·306 citations·filing 1985–2023
96Inventor score
Files withMITSUBISHI PENCIL CO20MITSUBISHI CHEM CORP6CANON KK3MITSUBISHI PETROCHEMICAL CO3KIHARA MAKOTO2
Top patents by PatentIndex Score
38 records- 0190US6048914AInk composition for writing instrumentMITSUBISHI PENCIL CO·Filed 1998·Granted Apr 11, 2000·67 cites·4 claims
- 0289US11780258B2Liquid storage member for coating toolsMITSUBISHI PENCIL CO·Filed 2020·Granted Oct 10, 2023·3 cites·7 claims
- 0389US8764104B2Structure of front section of vehicle bodyKIHARA MAKOTO·Filed 2011·Granted Jul 1, 2014·16 cites·8 claims
- 0488US11679618B2Ink reservoir unit for writing instruments and writing instrumentsMITSUBISHI PENCIL CO·Filed 2020·Granted Jun 20, 2023·2 cites·8 claims
- 0586US9315672B2Colorant, microcapsule pigment prepared by using the same and ink composition for writing instrumentMITSUBISHI PENCIL CO·Filed 2012·Granted Apr 19, 2016·4 cites·6 claims
- 0686US5980624AOil base ink compositionMITSUBISHI PENCIL CO·Filed 1997·Granted Nov 9, 1999·53 cites·6 claims
- 0784US8702148B2Structure for front section of vehicle bodyICHIKAWA SHUJI·Filed 2011·Granted Apr 22, 2014·14 cites·20 claims
- 0883US4673684AAmide derivatives and 5-lipoxygenase inhibitors containing the same as an active ingredientTERUMO CORP·Filed 1985·Granted Jun 16, 1987·19 cites·9 claims
- 0982US6786956B2Ballpoint pen oil-based ink composition and ballpoint pensMITSUBISHI PENCIL CO·Filed 2001·Granted Sep 7, 2004·18 cites·44 claims
- 1081US8702158B2Structure for vehicle body front portionKIHARA MAKOTO·Filed 2011·Granted Apr 22, 2014·10 cites·12 claims
- 1180US7794533B2Oil-based ink composition for writing utensil and writing utensil employing the sameMITSUBISHI PENCIL CO·Filed 2006·Granted Sep 14, 2010·4 cites·3 claims
- 1276US6051629AInk compositionMITSUBISHI PENCIL CO·Filed 1998·Granted Apr 18, 2000·35 cites·3 claims
- 1373US7071245B2Oil-based ballpoint pen ink composition and oil-based ballpoint penMITSUBISHI PENCIL CO·Filed 2001·Granted Jul 4, 2006·11 cites·6 claims
- 1471US5087766AProcess for producing allyl-substituted phenol compound and the productMITSUBISHI PETROCHEMICAL CO·Filed 1990·Granted Feb 11, 1992·12 cites·11 claims
- 1568US7172648B2Oil-base ballpoint ink composition and oily ballpoint pensMITSUBISHI PENCIL CO·Filed 2003·Granted Feb 6, 2007·8 cites·6 claims
- 1663US2025313034A1Ink storage member for writing implementsMITSUBISHI PENCIL CO·Filed 2023·Application pending·0 cites
- 1760US9790384B2Ink composition for writing instrument and coloring materialMITSUBISHI PENCIL CO·Filed 2014·Granted Oct 17, 2017·0 cites·11 claims
- 1858US4978810APolyalkenylphenol compoundMITSUBISHI PETROCHEMICAL CO·Filed 1989·Granted Dec 18, 1990·10 cites·1 claims
- 1957US2025353319A1Liquid storage member for coating toolsMITSUBISHI PENCIL CO·Filed 2023·Application pending·0 cites
- 2054US7462229B2Oil-based ink composition for ballpoint pen using oil-based inkMITSUBISHI PENCIL CO·Filed 2003·Granted Dec 9, 2008·4 cites·5 claims
- 2154US6531594B2Process for producing 1H-3-aminopyrrolidine and derivatives thereofMITSUBISHI CHEM CORP·Filed 2001·Granted Mar 11, 2003·1 cites·31 claims
- 2252US2023167316A1Ink composition for water-based ballpoint penMITSUBISHI PENCIL CO·Filed 2021·Application pending·0 cites
- 2351US5254742AProcess for preparing 2-hexene-1,6-dialMITSUBISHI PETROCHEMICAL CO·Filed 1992·Granted Oct 19, 1993·4 cites·12 claims
- 2447US2008243844A1Information processing apparatus and information processing methodCANON KK·Filed 2008·Application pending·0 cites
- 2545US7311459B2Follower for non-aqueous ball point pen and non-aqueous ball point penMITSUBISHI PENCIL CO·Filed 2004·Granted Dec 25, 2007·1 cites·17 claims
- 2644US5348890ATrioxane derivatives, and method for the chemiluminescenceNOF CORP·Filed 1992·Granted Sep 20, 1994·2 cites·4 claims
- 2744US2005149509A1Information processing method, information processing apparatus, control program, and storage mediumCANON KK·Filed 2004·Application pending·0 cites
- 2844US2005160085A1Information processing method, information processing terminal, program, and computer-readable storage mediumCANON KK·Filed 2004·Application pending·0 cites
- 2944US2019010344A1Microcapsule pigment and aqueous ink composition for writing instrumentsMITSUBISHI PENCIL CO·Filed 2017·Application pending·0 cites
- 3042US7056052B2Ink reservoir for writing instrumentMITSUBISHI PENCIL CO·Filed 2003·Granted Jun 6, 2006·0 cites·12 claims
- 3141US2018187015A1Functional particle pigmentMITSUBISHI PENCIL CO·Filed 2016·Application pending·0 cites
- 3240US6777570B2Process for producing norbornene derivative having organosilyl groupMITSUBISHI CHEM CORP·Filed 2003·Granted Aug 17, 2004·0 cites·2 claims
- 3339US5594090AAlkylene sulfide group-containing prepolymer, polymerizable composition and optical materialNOF CORP·Filed 1995·Granted Jan 14, 1997·7 cites·6 claims
- 3438US5847205AMethod for producing homocystineMITSUBISHI CHEM CORP·Filed 1997·Granted Dec 8, 1998·1 cites·9 claims
- 3537US7521491B2Oil-based ink composition for ballpoint pen and ball-point pen using oil-based inkMITSUBISHI PENCIL CO·Filed 2003·Granted Apr 21, 2009·0 cites·12 claims
- 3632US2003149293A1Method for producing 1,3-cyclohexanediol compoundMITSUBISHI CHEM CORP·Filed 2003·Application pending·0 cites
- 3727US6077971AMethod for purifying homocystineMITSUBISHI CHEM CORP·Filed 1998·Granted Jun 20, 2000·0 cites·17 claims
- 3827US5606079AProcess for the selective hydroformylation of terminal olefin groups and its use in the preparation of 1,4-butanedial monoacetalMITSUBISHI CHEM CORP·Filed 1995·Granted Feb 25, 1997·0 cites·24 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →