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DONG A TEACHING MATERIALS CO L

Overview
  • Total Patents
    11
About

DONG A TEACHING MATERIALS CO L has a total of 11 patent applications. Its first patent ever was published in 2001. It filed its patents most often in Republic of Korea, Taiwan and United States. Its main competitors in its focus markets basic materials chemistry, consumer goods and agriculture are SCHWAN BLEISTIFT FABRIK A G, SCHWAN BLEISTIFT FABRIK and LINQUAN COUNTY LONGBI PEN IND CO LTD.

Patent filings in countries

World map showing DONG A TEACHING MATERIALS CO Ls patent filings in countries
# Country Total Patents
#1 Republic of Korea 7
#2 Taiwan 2
#3 United States 2

Patent filings per year

Chart showing DONG A TEACHING MATERIALS CO Ls patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Jung Han Shin 5
#2 Lee Sun-Hyung 3
#3 Min Byoung-Whoo 2
#4 Jung Han Sin 2
#5 Kim Chung Kyung 1
#6 Seki Koji 1
#7 Kim Hak-Jae 1
#8 Jung Han-Shin 1
#9 Lee Ji Eun 1
#10 Kim Hak Jae 1

Latest patents

Publication Filing date Title
KR20100093900A Recrystallization type ink composite
KR20090123631A Transparency solid marker
KR20090084032A Removalable cryon
KR20070107824A Foamed ink composition and application instrument therewith
US6612765B2 Core guide assembly for stationery article
TW546207B Core guide assembly for stationery article
TW567147B Core guide assembly for stationery article
KR20030026002A Fluorescent Solid Writting Body
KR20030027147A Liquid Stickiness Composition and Writting Set Using The Same