Learn more

TONBO PENCIL

Overview
  • Total Patents
    74
About

TONBO PENCIL has a total of 74 patent applications. Its first patent ever was published in 1974. It filed its patents most often in Japan and Taiwan. Its main competitors in its focus markets machines, chemical engineering and packaging and shipping are EMINSA ENSAMBLAJE MANIP IND, TROTIGNON JEAN PIERRE and 3L LUDVIGSEN AS.

Patent filings in countries

World map showing TONBO PENCILs patent filings in countries
# Country Total Patents
#1 Japan 73
#2 Taiwan 1

Patent filings per year

Chart showing TONBO PENCILs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kawasaki Isao 21
#2 Yamabe Kiyoshi 14
#3 Sakuramachi Hiroki 12
#4 Ogiwara Shiyunyuu 11
#5 Abe Masatoshi 11
#6 Hasegawa Takashi 8
#7 Ogiwara Toshio 5
#8 Satou Naohito 4
#9 Nakamura Akio 3
#10 Wakisaka Masaharu 3

Latest patents

Publication Filing date Title
JPH01216899A Plastic erasing composition
JPH01209198A Thermoplastic elastomer erasing composition
JPH01204797A Plastic erasing composition
JPH01110999A Plastic eraser
JPS63263601A Composition for pack cleaner of record disk
JPS63252799A Ball pen tip and manufacture thereof
JPS63223078A Perfume-containing aqueous ink
JPS63156873A Lead for propelling pencil
JPS62108722A Carbonaceous composition having function of molecular sieve
JPS61257911A Lead of eyebrow pencil
JPS60225639A Activated carbon-inorganic sintered body molded adsorbent
JPS6090278A Emulsion-type releasable pressure-sensitive adhesive
JPS6082398A Synthetic resin pencil containing brilliant substance
JPS6069173A Water-based ball point ink
JPS6021765A Rod-shaped activated carbon for artificial organ
JPS6099264A Production of surface modified activated carbon for artificial organ
JPS59195517A Method for activating activated carbon
JPS5993770A Stick lame marker
JPS58176281A Emulsion ink composition for writing
JPS58138465A Rod-like activated carbon for artificial organ