Topic leaderboard
Implements for writing or drawing
Ranked by the PatentIndex Score — a 1–99 percentile within B43K · public-visibility date · generated 2026
top 25 per window · public-visibility date
Rising· last 2 yrs
Inventors whose newest B43K patents became public in the last 2 years — the current frontier
- 199Douglas Brand12 patents · 203 citations
- 296Hirotake Izawa13 patents · 61 citations
- 392Christopher P. Orem8 patents · 61 citations
- 488Jacob Epstein6 patents · 20 citations
- 583Joseph Lemay6 patents · 20 citations
- 679Arnaud Bez28 patents · 40 citations
- 775Toshimi Kamitani10 patents · 23 citations
- 871Takenori Kaneda8 patents · 20 citations
- 967Samuel Malinverni12 patents · 19 citations
- 1063Ryoji Kamiyama7 patents · 12 citations
- 1158Lauren Michelle Neubauer4 patents · 7 citations
- 1254Thomas R. Rau5 patents · 9 citations
- 1350Kei Oomoto5 patents · 10 citations
- 1446Satoru Banzai5 patents · 6 citations
- 1542Kiyoshi Fujisawa5 patents · 7 citations
- 1638Kouichi Takayama4 patents · 15 citations
- 1733Teppei Kanno2 patents · 6 citations
- 1829Mitsuhiro Kawabata3 patents · 6 citations
- 1925Andre Hertwig2 patents · 8 citations
- 2021Mark Cuban3 patents · 3 citations
- 2117Yusuke Koizumi5 patents · 2 citations
- 2213Etienne Michenaud14 patents · 1 citations
- 238Hisatoshi Hayakawa5 patents · 1 citations
- 244Dengwu Wu2 patents · 4 citations
- 251Ding He2 patents · 4 citations
Active· last 5 yrs
Sustained B43K output across the last 5 years
- 199Hidehei Kageyama92 patents · 841 citations
- 296Douglas Brand12 patents · 203 citations
- 392Gerhard Lugert15 patents · 124 citations
- 488Yoshikazu Tani22 patents · 131 citations
- 583Kyo Nakayama17 patents · 82 citations
- 679Franck Rolion35 patents · 97 citations
- 775Hirotake Izawa13 patents · 61 citations
- 871Takeo Fukumoto15 patents · 59 citations
- 967Bret R. Marschand6 patents · 96 citations
- 1063Christopher P. Orem8 patents · 61 citations
- 1158Wing Sum Vincent Kwan14 patents · 51 citations
- 1254Tadao Odaka12 patents · 54 citations
- 1350Hiroyuki Kanari8 patents · 47 citations
- 1446Jacob Epstein6 patents · 20 citations
- 1542Joseph Lemay6 patents · 20 citations
- 1638Arnaud Bez28 patents · 40 citations
- 1733Shuji Ichikawa9 patents · 33 citations
- 1829Ming-Tay Hsu4 patents · 70 citations
- 1925Julien Gouerec12 patents · 24 citations
- 2021Robert Henry8 patents · 25 citations
- 2117Ichiro Nishitani6 patents · 52 citations
- 2213Toshimi Kamitani10 patents · 23 citations
- 238Takenori Kaneda8 patents · 20 citations
- 244Samuel Malinverni12 patents · 19 citations
- 251Gregory Nungester7 patents · 16 citations
All-time canon
Career PatentIndex Score in B43K
- 199Jacqueline Anne Lapstun30 patents · 448 citations
- 296Yoshihide Mitsuya52 patents · 592 citations
- 392Shuhei Kageyama28 patents · 405 citations
- 488Masafumi Ohta4 patents · 289 citations
- 583Barry W. Chadwick8 patents · 241 citations
- 679Charles A. Hentzen4 patents · 676 citations
- 775Steven B. Heinecke4 patents · 676 citations
- 871Craig M. Stevens7 patents · 187 citations
- 967Hidehei Kageyama92 patents · 841 citations
- 1063Douglas Brand12 patents · 203 citations
- 1158Youichi Nakazato13 patents · 174 citations
- 1254Toshihiko Kageyama9 patents · 106 citations
- 1350Kazuhiko Furukawa39 patents · 378 citations
- 1446Nan J. Lin5 patents · 171 citations
- 1542Jose Duez9 patents · 163 citations
- 1638Gordon Perry5 patents · 109 citations
- 1733Wolfgang Witz10 patents · 172 citations
- 1829Michael T. Nowak6 patents · 150 citations
- 1925Andrew Bielecki11 patents · 151 citations
- 2021Ming-Jen Hsieh5 patents · 164 citations
- 2117Takao Inaba6 patents · 155 citations
- 2213Mitsuhiro Fukuoka5 patents · 126 citations
- 238Jiro Hori10 patents · 185 citations
- 244Gerhard Moeck9 patents · 139 citations
- 251Yoshiomi Konose9 patents · 154 citations
Rising· last 2 yrs
The top-scoring B43K patents made public in the last 2 years
- 199US12064988B1✦ AIConnectable marker pens4 cites · 202482% earned
- 296US12377342B2✦ AIDice spinner2 cites · 202476% earned
- 392US12466210B2✦ AIShaft body of pencil or cosmetic2 cites · 202476% earned
- 488US11904625B1Automatically retractable writing instrument2 cites · 202476% earned
- 583US11937675B1Holding device for one or more highlighter pens2 cites · 202476% earned
- 679US12216845B2Electronic pen and electronic pen body portion1 cites · 202450% earned
- 775US12369699B2Cosmetic applicator1 cites · 202567% earned
- 871US11980311B1Detachable supporting device1 cites · 202467% earned
- 967US12122180B2Writing system having magnetic writing tool and magnetic support surface therefor1 cites · 202467% earned
- 1063US12344026B2Moisture-erasable note taking system0 cites · 20240% earned
- 1158US12443294B2External user interface for head worn computing0 cites · 20240% earned
- 1254US12233661B2Digital pen with enhanced educational and therapeutic feedback0 cites · 20240% earned
- 1350US12153745B2Electronic pen and cartridge-type electronic pen main body including an conductive center 0 cites · 20240% earned
- 1446US12576416B2Intelligent marking paint applicator system and method of use0 cites · 20250% earned
- 1542US12216841B2Electronic pen, electronic pen cartridge, and electronic pen main unit0 cites · 20240% earned
- 1638US12109835B1Finger mountable implement0 cites · 20240% earned
- 1733US11951764B1Dry erase marker board system with solid wetting marker board0 cites · 20240% earned
- 1829US12122930B2Color-change and erasable writing compositions, writing instruments, and systems0 cites · 20240% earned
- 1925US11999183B1Finger pen with replicable tips0 cites · 20240% earned
- 2021US12239495B2Surgical skin marker0 cites · 20250% earned
- 2117US12109836B1Ballpoint dot pen tattoo cartridge0 cites · 20240% earned
- 2213US12507785B2Press-type makeup pen0 cites · 20250% earned
- 238US12108864B1Rear-pressing anti-misoperation double-ended eyebrow pencil0 cites · 20240% earned
- 244US11932045B2Non-slip assembly for binder clip0 cites · 20240% earned
- 251US12202294B2Writing instruments0 cites · 20240% earned
Active· last 5 yrs
The top-scoring B43K patents of the last 5 years
- 199US10974540B1✦ AIRetractable pen with a push button12 cites · 202188% earned
- 296US11026508B1✦ AICustomizable desk organizer12 cites · 202188% earned
- 392US10960705B1✦ AIDetachable and retractable pen9 cites · 202187% earned
- 488US12064988B1Connectable marker pens4 cites · 202482% earned
- 583US11880514B2Electronic pen and electronic pen body portion5 cites · 202372% earned
- 679US11291317B2Marking apparatus and kit for blind mount alignment6 cites · 202271% earned
- 775US11472219B2Wicking nib device and system5 cites · 202177% earned
- 871US11504994B1Marker stand4 cites · 202275% earned
- 967US11331784B2Ergonomic hand-held instrument6 cites · 202185% earned
- 1063US11084318B2Multifunctional writing device for automatic exam proctoring and grading4 cites · 202182% earned
- 1158US11413901B1Palm pen3 cites · 202272% earned
- 1254US11529010B1Convertible metal backings and related methods3 cites · 202272% earned
- 1350US12377342B2Dice spinner2 cites · 202476% earned
- 1446US11241904B2Retractable pen4 cites · 202182% earned
- 1542US11084317B1Writing utensil assembly4 cites · 202182% earned
- 1638US11507208B2External user interface for head worn computing3 cites · 202259% earned
- 1733US11540613B2Nail pen nib3 cites · 202167% earned
- 1829US11299329B2Application container4 cites · 202182% earned
- 1925US11738588B2Compact writing instrument2 cites · 202267% earned
- 2021US11241906B1Fidget device3 cites · 202280% earned
- 2117US12466210B2Shaft body of pencil or cosmetic2 cites · 202476% earned
- 2213US11780258B2Liquid storage member for coating tools3 cites · 202280% earned
- 238US11376886B2Applicator device with automatic retraction3 cites · 202180% earned
- 244US11707127B2Direct liquid type pen-shaped eyeliner2 cites · 202276% earned
- 251US11904625B1Automatically retractable writing instrument2 cites · 202476% earned
All-time canon
The defining B43K patents of the whole record
- 199US6420622B1✦ AIMedical article having fluid control film455 cites · 200288% earned
- 296US6988295B2✦ AIHandle/grip and method for designing the like283 cites · 200389% earned
- 392US4029915A✦ AIMiniaturized calculator keyboard switch assembly having universally pivoted key actuators264 cites · 197794% earned
- 488US6290349B1Printer consumable cartridge208 cites · 200169% earned
- 583US6961190B1Bulk lens, light emitting body, lighting device and optical information system179 cites · 200588% earned
- 679US6867342B2Drug delivery dressing having fluid control film177 cites · 200287% earned
- 775US7395106B2Wearable physiological signal detection module and measurement apparatus having the same169 cites · 200594% earned
- 871US7081888B2Flexible resistive touch screen151 cites · 200494% earned
- 967US6681045B1Method and system for note taking150 cites · 200467% earned
- 1063US5743414ABoard edging system and method of manufacture thereof149 cites · 199894% earned
- 1158US5607766APolyethylene terephthalate sheath/thermoplastic polymer core bicomponent fibers, method of148 cites · 199788% earned
- 1254US6454482B1Universal pen143 cites · 200277% earned
- 1350US5253368ACap with erasable billboard143 cites · 199393% earned
- 1446US3941488AMarker/anti-marker system140 cites · 197693% earned
- 1542US5620641APolyethylene terephthalate sheath/thermoplastic polymer core bicomponent fibers, method of136 cites · 199788% earned
- 1638US3983602AImplement holder for a safety helmet135 cites · 197693% earned
- 1733US4896543AThree-axis force measurement stylus132 cites · 199090% earned
- 1829US5460346AArticle holder131 cites · 199593% earned
- 1925US5913629AWriting implement including an input stylus127 cites · 199990% earned
- 2021US5000599AWriting implement122 cites · 199193% earned
- 2117US4557618AInk and eraser of the ink120 cites · 198593% earned
- 2213US6273626B1Grip for a writing instrument120 cites · 200193% earned
- 238US7174056B2Providing information in a document118 cites · 200466% earned
- 244US4758849AHand-held ink jet with insertable cartridges114 cites · 198893% earned
- 251US5899624AFluid dispensing valve114 cites · 199993% earned
Rising· last 2 yrs
Assignees whose newest B43K patents became public in the last 2 years — the current frontier
- 199MITSUBISHI PENCIL CO201 patents · 1,650 citations
- 296MONTBLANC-SIMPLO GMBH16 patents · 163 citations
- 392TOKIWA CORP33 patents · 192 citations
- 488CRAYOLA LLC34 patents · 112 citations
- 583ROCKET INNOVATIONS INC6 patents · 20 citations
- 679WACOM CO LTD28 patents · 56 citations
- 775SOCIéTé BIC97 patents · 57 citations
- 871MENTOR ACQUISITION ONE LLC5 patents · 10 citations
- 967NEUBAUER LAUREN MICHELLE4 patents · 7 citations
- 1063PILOT CORPORATION KK31 patents · 7 citations
- 1158MICROSOFT TECHNOLOGY LICENSING LLC6 patents · 4 citations
- 1254SHENZHEN THOUSANDSHORES TECH CO LTD2 patents · 4 citations
- 1350BIC VIOLEX SINGLE MEMBER SA11 patents · 0 citations
- 1446ELLIS II PAUL DAVID1 patents · 2 citations
- 1542KHANDELWAL SANGHARSH1 patents · 2 citations
- 1638YARRO STUDIOS INC1 patents · 2 citations
- 1733ANTEMILAN LLC2 patents · 0 citations
- 1829BRIGGS CORBIN2 patents · 0 citations
- 1925NOVIUM TAIWAN INC1 patents · 1 citations
- 2021STEADYSCRIB LLC1 patents · 1 citations
- 2117A W FABER CASTELL COSMETICS GMBH3 patents · 0 citations
- 2213C JOSEF LAMY GMBH3 patents · 0 citations
- 238UNIV KING FAISAL2 patents · 0 citations
- 244FENG SHIN2 patents · 0 citations
- 251KIM CHUN KI2 patents · 0 citations
Active· last 5 yrs
Sustained B43K output across the last 5 years
- 199PENTEL KK59 patents · 985 citations
- 296KOTOBUKI & CO LTD151 patents · 1,490 citations
- 392PILOT INK CO LTD52 patents · 667 citations
- 488SANFORD LP50 patents · 536 citations
- 583MITSUBISHI PENCIL CO201 patents · 1,650 citations
- 679ZEBRA CO LTD28 patents · 401 citations
- 775MONTBLANC-SIMPLO GMBH16 patents · 163 citations
- 871TOKIWA CORP33 patents · 192 citations
- 967CRAYOLA LLC34 patents · 112 citations
- 1063MICRO CO LTD14 patents · 82 citations
- 1158KURETAKE CO LTD12 patents · 68 citations
- 1254ROCKET INNOVATIONS INC6 patents · 20 citations
- 1350WACOM CO LTD28 patents · 56 citations
- 1446SOCIéTé BIC97 patents · 57 citations
- 1542HEWLETT PACKARD DEVELOPMENT CO5 patents · 70 citations
- 1638MENTOR ACQUISITION ONE LLC5 patents · 10 citations
- 1733FABER CASTELL AG12 patents · 41 citations
- 1829CW CONSULTING ASS LLC6 patents · 17 citations
- 1925HORN KIMBERLEE ANN3 patents · 18 citations
- 2021HANGZHOU JIANYI TECH CO LTD4 patents · 25 citations
- 2117SAMSUNG ELECTRO MECH4 patents · 13 citations
- 2213MARESH JOSEPH D6 patents · 11 citations
- 238MILWAUKEE ELECTRIC TOOL CORP6 patents · 6 citations
- 244COMSERO INC4 patents · 12 citations
- 251NEUBAUER LAUREN MICHELLE4 patents · 7 citations
All-time canon
All-time PatentIndex Score in B43K
- 199SILVERBROOK RES PTY LTD136 patents · 2,413 citations
- 2963M INNOVATIVE PROPERTIES CO8 patents · 809 citations
- 392AMERICAN FILTRONA CORP7 patents · 514 citations
- 488GILLETTE CO58 patents · 1,272 citations
- 583PENTEL KK59 patents · 985 citations
- 679BIC CORP40 patents · 881 citations
- 775BURROUGHS CORP5 patents · 263 citations
- 871KOTOBUKI & CO LTD151 patents · 1,490 citations
- 967PILOT INK CO LTD52 patents · 667 citations
- 1063SANFORD LP50 patents · 536 citations
- 1158MITSUBISHI PENCIL CO201 patents · 1,650 citations
- 1254ATX INT INC6 patents · 262 citations
- 1350DRI MARK PRODUCTS INC6 patents · 159 citations
- 1446ZEBRA CO LTD28 patents · 401 citations
- 1542RICOH KK4 patents · 289 citations
- 1638BINNEY & SMITH INC13 patents · 327 citations
- 1733ANCOS CO LTD20 patents · 470 citations
- 1829EASTMAN KODAK CO4 patents · 430 citations
- 1925SAKURA COLOR PROD CORP43 patents · 520 citations
- 2021ARMAMENT SYSTEMS & PROCEDURES5 patents · 139 citations
- 2117AVERY DENNISON CORP9 patents · 252 citations
- 2213PIONEER IND CORP5 patents · 182 citations
- 238LAPSTUN PAUL7 patents · 60 citations
- 244DENNISON MFG CO7 patents · 180 citations
- 251PENTECH INT INC5 patents · 181 citations
90–99 field-defining50–89 strong<50 emergingearned by citationsfrom family breadth