Inventor · disambiguated record
Shuhei Kageyama
Also filed as: KAGEYAMA SHUHEI
29 granted patents·424 citations·filing 1988–1999
97Inventor score
Top patents by PatentIndex Score
29 records- 0185US5547301AWriting instrument with rotatable advancement and retractionKOTOBUKI & CO LTD·Filed 1995·Granted Aug 20, 1996·29 cites·20 claims
- 0282US5022774AWriting tool with eraser dispenserKOTOBUKI & CO LTD·Filed 1988·Granted Jun 11, 1991·24 cites·3 claims
- 0381US5927882ADispenser for selectively extending and retracting a substantially stick-shaped object and writing instrumentKOTOBUKI & CO LTD·Filed 1996·Granted Jul 27, 1999·26 cites·14 claims
- 0479US5263786ARotary-cam ball-point penKOTOBUKI & CO INC·Filed 1993·Granted Nov 23, 1993·43 cites·4 claims
- 0577US5413428AWriting instrumentKOTOBUKI & CO LTD·Filed 1994·Granted May 9, 1995·38 cites·7 claims
- 0670US5480249ALead dispensing storage containerKOTOBUKI & CO LTD·Filed 1994·Granted Jan 2, 1996·24 cites·2 claims
- 0769US5683191AWriting toolKOTOBUKI & CO LTD·Filed 1994·Granted Nov 4, 1997·17 cites·4 claims
- 0867US5362166AFlat stick-shaped material propelling containerKOTOBUKI & CO LTD·Filed 1993·Granted Nov 8, 1994·25 cites·10 claims
- 0966US5184908AWriting implement with side actuatorKOTOBUKI & CO LTD·Filed 1992·Granted Feb 9, 1993·25 cites·7 claims
- 1056US5207522AKnock type mechanical pencil with retractable eraserKOTOBUKI & CO LTD·Filed 1991·Granted May 4, 1993·10 cites·3 claims
- 1155US4973179AClip actuated latch mechanism for retractable writing instrumentsKOTOBUKI & CO LTD·Filed 1989·Granted Nov 27, 1990·13 cites·4 claims
- 1254US4976561AWriting toolsKOTOBUKI & CO LTD·Filed 1988·Granted Dec 11, 1990·14 cites·2 claims
- 1353US4856693AWorking out container of bar shaped articleKOTOBUKI & CO LTD·Filed 1988·Granted Aug 15, 1989·19 cites·2 claims
- 1451US5810496AWriting instrumentKOTOBUKI & CO LTD·Filed 1997·Granted Sep 22, 1998·8 cites·1 claims
- 1551US5549404AStick-shaped material drive container and supply cassetteKOTOBUKI & CO LTD·Filed 1994·Granted Aug 27, 1996·19 cites·15 claims
- 1650US5306107ATwin-type stick-shaped material extending containerKOTOBUKI & CO LTD·Filed 1993·Granted Apr 26, 1994·15 cites·9 claims
- 1748US5236270AWriting tool for advancing lead with eraser dispenserKOTOBUKI & CO LTD·Filed 1992·Granted Aug 17, 1993·7 cites·3 claims
- 1848US4968167ACombined writing toolKAGEYAMA SHUHEI·Filed 1989·Granted Nov 6, 1990·13 cites·7 claims
- 1946US5961237AWriting instrumentKOTOBUKI & CO LTD·Filed 1998·Granted Oct 5, 1999·6 cites·2 claims
- 2044US4929107ASwing-type mechanical pencilKOTOBUKI & CO LTD·Filed 1988·Granted May 29, 1990·8 cites·6 claims
- 2139US5700101AWriting toolKOTOBUKI & CO LTD·Filed 1994·Granted Dec 23, 1997·4 cites·3 claims
- 2239US5149219ASwing-type mechanical pencilKOTOBUKI & CO LTD·Filed 1990·Granted Sep 22, 1992·7 cites·5 claims
- 2338US5961236ADispenser for selectively extending and retracting a substantially stick-shaped object and writing instrument with the dispenserKOTOBUKI & CO LTD·Filed 1999·Granted Oct 5, 1999·4 cites·9 claims
- 2438US5826999AMechanical pencilKOTOBUKI & CO LTD·Filed 1996·Granted Oct 27, 1998·5 cites·7 claims
- 2538US5165813AContainer with snap-in chuck and chuck ringKOTOBUKI & CO LTD·Filed 1991·Granted Nov 24, 1992·6 cites·10 claims
- 2635US6126350AWriting utensilGILLETTE CO·Filed 1998·Granted Oct 3, 2000·4 cites·7 claims
- 2735US5788118ALead dispensing storage containerKOTOBUKI & CO LTD·Filed 1997·Granted Aug 4, 1998·7 cites·1 claims
- 2831US4969763ALead forwarding mechanism retainer for thurst action mechanical pencilKOTOBUKI & CO LTD·Filed 1988·Granted Nov 13, 1990·2 cites·12 claims
- 2929US5720643ALead dispensing storage containerKOTOBUKI & CO LTD·Filed 1995·Granted Feb 24, 1998·2 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →