Inventor
KAGEYAMA SHUHEI
JP30 patents
⚠️ This page may combine multiple inventors who share the name “KAGEYAMA SHUHEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KOTOBUKI & CO LTD
27 patentsUS5362166ANov 8, 1994
Flat stick-shaped material propelling container
KOTOBUKI & CO LTD25 citations93
US5184908AFeb 9, 1993
Writing implement with side actuator
KOTOBUKI & CO LTD25 citations93
US4795073AJan 3, 1989
Stapler with detachable staple holder
KOTOBUKI & CO LTD51 citations93
US5927882AJul 27, 1999
Dispenser for selectively extending and retracting a substantially stick-shaped object and writing instrument
KOTOBUKI & CO LTD26 citations92
US5547301AAug 20, 1996
Writing instrument with rotatable advancement and retraction
KOTOBUKI & CO LTD29 citations92
US5413428AMay 9, 1995
Writing instrument
KOTOBUKI & CO LTD38 citations92
US5022774AJun 11, 1991
Writing tool with eraser dispenser
KOTOBUKI & CO LTD24 citations92
US5480249AJan 2, 1996
Lead dispensing storage container
KOTOBUKI & CO LTD24 citations91
US5683191ANov 4, 1997
Writing tool
KOTOBUKI & CO LTD17 citations82
US5549404AAug 27, 1996
Stick-shaped material drive container and supply cassette
KOTOBUKI & CO LTD19 citations82
US5207522AMay 4, 1993
Knock type mechanical pencil with retractable eraser
KOTOBUKI & CO LTD10 citations82
US4976561ADec 11, 1990
Writing tools
KOTOBUKI & CO LTD14 citations74
US5961237AOct 5, 1999
Writing instrument
KOTOBUKI & CO LTD6 citations73
US5810496ASep 22, 1998
Writing instrument
KOTOBUKI & CO LTD8 citations73
US5700101ADec 23, 1997
Writing tool
KOTOBUKI & CO LTD4 citations73
US5236270AAug 17, 1993
Writing tool for advancing lead with eraser dispenser
KOTOBUKI & CO LTD7 citations73
US4856693AAug 15, 1989
Working out container of bar shaped article
KOTOBUKI & CO LTD19 citations73
US5788118AAug 4, 1998
Lead dispensing storage container
KOTOBUKI & CO LTD7 citations72
US5306107AApr 26, 1994
Twin-type stick-shaped material extending container
KOTOBUKI & CO LTD15 citations72
US5149219ASep 22, 1992
Swing-type mechanical pencil
KOTOBUKI & CO LTD7 citations72
US4973179ANov 27, 1990
Clip actuated latch mechanism for retractable writing instruments
KOTOBUKI & CO LTD13 citations72
US4929107AMay 29, 1990
Swing-type mechanical pencil
KOTOBUKI & CO LTD8 citations72
US5961236AOct 5, 1999
Dispenser for selectively extending and retracting a substantially stick-shaped object and writing instrument with the dispenser
KOTOBUKI & CO LTD4 citations63
US5826999AOct 27, 1998
Mechanical pencil
KOTOBUKI & CO LTD5 citations63
US5165813ANov 24, 1992
Container with snap-in chuck and chuck ring
KOTOBUKI & CO LTD6 citations63
US4969763ANov 13, 1990
Lead forwarding mechanism retainer for thurst action mechanical pencil
KOTOBUKI & CO LTD2 citations62
US5720643AFeb 24, 1998
Lead dispensing storage container
KOTOBUKI & CO LTD2 citations61