Learn more

WALLRAM HARTMETALLWERK

Overview
  • Total Patents
    20
About

WALLRAM HARTMETALLWERK has a total of 20 patent applications. Its first patent ever was published in 1937. It filed its patents most often in Germany. Its main competitors in its focus markets machine tools, civil engineering and materials and metallurgy are KINGDREAM PLC, VALLOUREC DRILLING PRODUCTS FRANCE and JAPAN DRILLING CO LTD.

Patent filings in countries

World map showing WALLRAM HARTMETALLWERKs patent filings in countries
# Country Total Patents
#1 Germany 20

Patent filings per year

Chart showing WALLRAM HARTMETALLWERKs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Skaupy Franz Dr 3
#2 Meutsch Adolf 3
#3 Jakobi Willi 1
#4 Arzt Heinz Dipl-Ing 1

Latest patents

Publication Filing date Title
DE879074C Process for the production of abrasive bodies
DE863161C Armored grinding drum
DE853582C Core drill bit for rotary drilling in the rock
DE856589C Rock percussion drill with hard metal inserts
DE860784C Pointed iron for hammer
DE765003C Tool with hard metal inserts or pads
DE767419C Process for the production of sintered metal bodies
DE764815C Solder for soldering high-speed steel or hard metal on steel
DE764658C Heating wire resistant to corrosion in the air in the heat
DE722763C Drill pipe for rock drill with a larger inner longitudinal bore than required for the passage of the flush
DE758462C Rock percussion drill
DE764041C Detachable drilling connection with intermediate piece for rock percussion drill
DE764144C Process for the production of hard supports for knives, cutting tools and other work equipment
DE891236C Tool, in particular a drawing or pressing tool, with a hard metal core and a metal socket surrounding it, and a method for connecting the core to the socket
DE935456C Process for the production of alloy powders
DE756754C Process for the production of synthetic resin grinding bodies, especially grinding wheels
DE767126C Tool with hard metal cutting edge, especially for metalworking
DE751201C Flexible metal mesh insert for soldering metal pieces on tools