Assignee
PILOT CORPORATION KK
JP·42 granted patents·1 pending application·24 citations·filing 2014–2023
Top patents by PatentIndex Score
43 records- 0189US11919324B2Soft member attachment structure and thermochromic writing instrumentPILOT CORPORATION KK·Filed 2020·Granted Mar 5, 2024·2 cites·15 claims
- 0285US11383547B2Friction body, writing instrument, and writing setPILOT CORPORATION KK·Filed 2017·Granted Jul 12, 2022·2 cites·12 claims
- 0382US10538124B2Retractable writing instrumentPILOT CORPORATION KK·Filed 2016·Granted Jan 21, 2020·2 cites·19 claims
- 0471US11667146B2Writing toolPILOT CORPORATION KK·Filed 2019·Granted Jun 6, 2023·1 cites·11 claims
- 0569US2026061771A1Multi-core writing implementPILOT CORPORATION KK·Filed 2023·Application pending·0 cites
- 0663US12275269B2Thermochromic writing instrumentPILOT CORPORATION KK·Filed 2021·Granted Apr 15, 2025·0 cites·10 claims
- 0762US12220937B2Writing ball, method for manufacturing writing ball, and ballpoint pen with writing ballPILOT CORPORATION KK·Filed 2022·Granted Feb 11, 2025·0 cites·12 claims
- 0859US11015076B2Ink composition for reversibly thermochromic stamp and stampPILOT CORPORATION KK·Filed 2015·Granted May 25, 2021·1 cites·9 claims
- 0959US10711147B2Writing ink composition for aqueous ballpoint pen, ballpoint pen employing the same, and process for producing the writing ink composition for aqueous ballpoint penPILOT CORPORATION KK·Filed 2019·Granted Jul 14, 2020·0 cites·15 claims
- 1053US12179510B2Friction body unit and thermochromic writing instrumentPILOT CORPORATION KK·Filed 2022·Granted Dec 31, 2024·0 cites·7 claims
- 1153US11975560B2Ballpoint pen tip, ballpoint pen refill, and ballpoint penPILOT CORPORATION KK·Filed 2021·Granted May 7, 2024·0 cites·9 claims
- 1253USD949970SBallpoint penPILOT CORPORATION KK·Filed 2020·Granted Apr 26, 2022·2 cites·1 claims
- 1352US11560490B2Water-based ink composition for ballpoint pen and water-based ballpoint pen using the samePILOT CORPORATION KK·Filed 2018·Granted Jan 24, 2023·0 cites·14 claims
- 1452US10556459B2Writing instrument for forming thermochromic handwritingPILOT CORPORATION KK·Filed 2016·Granted Feb 11, 2020·0 cites·10 claims
- 1552US9884508B2Writing instrument and ink cartridgePILOT CORPORATION KK·Filed 2014·Granted Feb 6, 2018·0 cites·21 claims
- 1651US10000088B2Writing instrument and ink cartridgePILOT CORPORATION KK·Filed 2014·Granted Jun 19, 2018·0 cites·23 claims
- 1750US9976043B2Solid writing materialPILOT CORPORATION KK·Filed 2014·Granted May 22, 2018·0 cites·6 claims
- 1848US11993097B2Mechanical pencilPILOT CORPORATION KK·Filed 2020·Granted May 28, 2024·0 cites·10 claims
- 1948US11446953B2Pressurized-type writing implementPILOT CORPORATION KK·Filed 2018·Granted Sep 20, 2022·0 cites·13 claims
- 2048US10927270B2Oil-based ink composition for writing instruments, and writing instrument, marking pen and ballpoint pen comprising the samePILOT CORPORATION KK·Filed 2016·Granted Feb 23, 2021·0 cites·12 claims
- 2148US10087337B2Oil-based ball-point pen refill, oil-based ball-point pen, and oil-based ball-point pen ink compositionPILOT CORPORATION KK·Filed 2014·Granted Oct 2, 2018·0 cites·8 claims
- 2247US12097723B2Retractable writing implementPILOT CORPORATION KK·Filed 2020·Granted Sep 24, 2024·0 cites·13 claims
- 2346US12049099B2Projectable and retractable writing toolPILOT CORPORATION KK·Filed 2021·Granted Jul 30, 2024·0 cites·22 claims
- 2446US11267978B2Reversibly thermochromic aqueous ink composition and writing instrument using the samePILOT CORPORATION KK·Filed 2018·Granted Mar 8, 2022·0 cites·15 claims
- 2546USD886193SPenPILOT CORPORATION KK·Filed 2018·Granted Jun 2, 2020·3 cites·1 claims
- 2645US12139623B2Oil-based ink composition for writing board and marking pen incorporating samePILOT CORPORATION KK·Filed 2019·Granted Nov 12, 2024·0 cites·2 claims
- 2745US11396203B2Knock type writing toolPILOT CORPORATION KK·Filed 2019·Granted Jul 26, 2022·0 cites·9 claims
- 2845US10569595B2Direct liquid type of writing toolPILOT CORPORATION KK·Filed 2016·Granted Feb 25, 2020·0 cites·23 claims
- 2944US11993099B2Ballpoint penPILOT CORPORATION KK·Filed 2021·Granted May 28, 2024·0 cites·7 claims
- 3042USD884789SPenPILOT CORPORATION KK·Filed 2018·Granted May 19, 2020·3 cites·1 claims
- 3142USD813310SBallpoint penPILOT CORPORATION KK·Filed 2016·Granted Mar 20, 2018·5 cites·1 claims
- 3241US12421411B2Aqueous ink composition for reversibly thermochromic writing instrument, and refill and aqueous ballpoint pen incorporating aqueous ink composition for reversibly thermochromic writing instrumentPILOT CORPORATION KK·Filed 2020·Granted Sep 23, 2025·0 cites·9 claims
- 3341US11912058B2Retractable writing instrumentPILOT CORPORATION KK·Filed 2020·Granted Feb 27, 2024·0 cites·12 claims
- 3440US11390111B2Writing implementPILOT CORPORATION KK·Filed 2018·Granted Jul 19, 2022·0 cites·5 claims
- 3539USD941921SFountain penPILOT CORPORATION KK·Filed 2020·Granted Jan 25, 2022·0 cites·1 claims
- 3639US10145814B2Internal solution for reference electrode, reference electrode, and glass electrodePILOT CORPORATION KK·Filed 2015·Granted Dec 4, 2018·0 cites·3 claims
- 3739USD822111SBallpoint penPILOT CORPORATION KK·Filed 2016·Granted Jul 3, 2018·3 cites·1 claims
- 3837USD1107792SWriting instrumentPILOT CORPORATION KK·Filed 2023·Granted Dec 30, 2025·0 cites·1 claims
- 3936US10787025B2Thermochromic writing toolPILOT CORPORATION KK·Filed 2017·Granted Sep 29, 2020·0 cites·3 claims
- 4036US10500891B2Mechanical pencilPILOT CORPORATION KK·Filed 2016·Granted Dec 10, 2019·0 cites·12 claims
- 4130US11267278B2Projectable and retractable writing tool and multi-tip writing toolPILOT CORPORATION KK·Filed 2018·Granted Mar 8, 2022·0 cites·21 claims
- 4227USD877250SBallpoint penPILOT CORPORATION KK·Filed 2018·Granted Mar 3, 2020·0 cites·1 claims
- 4327USD832348SBallpoint penPILOT CORPORATION KK·Filed 2016·Granted Oct 30, 2018·0 cites·1 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →