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SCHWAN BLEISTIFT FABRIK A G

Overview
  • Total Patents
    14
About

SCHWAN BLEISTIFT FABRIK A G has a total of 14 patent applications. Its first patent ever was published in 1926. It filed its patents most often in Germany, Switzerland and Austria. Its main competitors in its focus markets basic materials chemistry, consumer goods and thermal processes are DONG A TEACHING MATERIALS CO L, KOH I NOOR HARDTMUTH and SCHWAN BLEISTIFT FABRIK.

Patent filings in countries

World map showing SCHWAN BLEISTIFT FABRIK A Gs patent filings in countries
# Country Total Patents
#1 Germany 10
#2 Switzerland 2
#3 Austria 1
#4 Denmark 1

Patent filings per year

Chart showing SCHWAN BLEISTIFT FABRIK A Gs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 G Schwan-Bleistift-Fabrik A 1
#2 Schwan-Bleistift-Fabrik A-G 1

Latest patents

Publication Filing date Title
DE839613C Ball writing and drawing device
DE752381C Process for the production of tropicalized pencil leads
DE900543C Fire box for burning pencil leads
DE765896C Pen
DE744913C Pen with a cover layer provided on one end
DE765958C Unburned, colored writing or drawing leads
DE706501C Process for the production of tropicalized pencil leads
DE689854C Pencil leads
DE692556C Process for the production of tropicalized pencil leads