Inventor
ANZAI SHOUJI
JP7 patents
⚠️ This page may combine multiple inventors who share the name “ANZAI SHOUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KOTOBUKI & CO LTD
6 patentsUS6517272B1Feb 11, 2003
Double-chuck mechanical pencil
KOTOBUKI & CO LTD11 citations73
US5988913ANov 23, 1999
Double-chuck mechanical pencil
KOTOBUKI & CO LTD12 citations73
US5947620ASep 7, 1999
Double-chuck mechanical pencil
KOTOBUKI & CO LTD8 citations73
US5462376AOct 31, 1995
Mechanical pencil with improved slider mechanism
KOTOBUKI & CO LTD11 citations73
US6517271B1Feb 11, 2003
Double-chuck mechanical pencil
KOTOBUKI & CO LTD4 citations62
US5890827AApr 6, 1999
Bar extruding implement with ejector
KOTOBUKI & CO LTD4 citations62