Inventor · disambiguated record
Kiyoshi Fujisawa
Also filed as: FUJISAWA KIYOSHI
15 granted patents·1 pending application·25 citations·filing 1997–2023
87Inventor score
Files withMITSUBISHI PENCIL CO10AGENCY IND SCIENCE TECHN1CASIO COMPUTER CO LTD1MATSUDA YUGO1MITSUBISHI PENCIL KABUSHIKIKAI1
Top patents by PatentIndex Score
16 records- 0168US7951504B2Fuel cartridgeMITSUBISHI PENCIL CO·Filed 2007·Granted May 31, 2011·1 cites·17 claims
- 0255US6048054AInk replenishing apparatus and ink replenishing method for ink-jet printing ink cartridgeMITSUBISHI PENCIL CO·Filed 1997·Granted Apr 11, 2000·16 cites·5 claims
- 0354US7909901B2Liquid cartridgeCASIO COMPUTER CO LTD·Filed 2007·Granted Mar 22, 2011·0 cites·9 claims
- 0451US7303351B2Writing instrument and welding method of writing point assembly and writing instrument parts connecting structure and connecting methodMITSUBISHI PENCIL CO·Filed 2003·Granted Dec 4, 2007·2 cites·3 claims
- 0548US11112892B2Stylus penMITSUBISHI PENCIL CO·Filed 2018·Granted Sep 7, 2021·0 cites·8 claims
- 0647US12358685B2Replacement lead caseMITSUBISHI PENCIL CO·Filed 2021·Granted Jul 15, 2025·0 cites·11 claims
- 0747US6881802B2Catalyst for addition polymerization and process for producing an addition polymerSUMITOMO CHEMICAL CO·Filed 2002·Granted Apr 19, 2005·1 cites·12 claims
- 0846US6926458B2Ball-point pen refillMITSUBISHI PENCIL KABUSHIKIKAI·Filed 2001·Granted Aug 9, 2005·5 cites·31 claims
- 0944USD1045374SCase for mechanical pencil leadsMITSUBISHI PENCIL CO·Filed 2023·Granted Oct 8, 2024·0 cites·1 claims
- 1044US8435698B2Fuel containerMATSUDA YUGO·Filed 2007·Granted May 7, 2013·0 cites·6 claims
- 1143US2015317950A1Electrophoretic display apparatus and drive method thereofMITSUBISHI PENCIL CO·Filed 2013·Application pending·0 cites
- 1241US6841650B2Crystallizable poly (2,5-di-substituted-1,4-phenylene oxide) and a method of preparing the sameNAT INST OF ADVANCED IND SCIEN·Filed 2002·Granted Jan 11, 2005·0 cites·31 claims
- 1340US10023756B2Solid drawing materialMITSUBISHI PENCIL CO·Filed 2015·Granted Jul 17, 2018·0 cites·6 claims
- 1440US7325992B2Gas-pressurized writing instrument and writing instrument refillMITSUBISHI PENCIL CO·Filed 2003·Granted Feb 5, 2008·0 cites·11 claims
- 1539US7381004B2Gas pressurized writing instrument and writing instrument refillMITSUBISHI PENCIL CO·Filed 2003·Granted Jun 3, 2008·0 cites·4 claims
- 1639US6541596B1Crystallizable poly (2,5-di-substituted-1,4-phenylene oxide) and a method of preparing the sameAGENCY IND SCIENCE TECHN·Filed 2000·Granted Apr 1, 2003·0 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →