WILHELM SCHEFFER DR

Overview

About

WILHELM SCHEFFER DR has a total of 12 patent applications. Its first patent ever was published in 1917. It filed its patents most often in Germany. Its main competitors in its focus markets basic materials chemistry, measurement and textiles and paper are ARMAS G C, JENKINS PETROLEUM PROCESS COMP and FORWARD CHAUNCEY B.

Patent filings in countries

#	Country	Total Patents
#1	Germany	12

#	Technology
#1	Liquid hydrocarbon mixture production
#2	Burners
#3	Printing processes
#4	Measuring length, angles and areas
#5	Chemical or physical laboratory devices
#6	Optical systems

Publication	Filing date	Title
DE425667C	1924-04-08	Method for the production of hectograph mass with agar-agar
DE421270C	1924-01-08	Process for the production of hectograph mass
DE355919C	1920-07-27	Gas burner like the Bunsen burner with simultaneous regulation of gas and air