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STEIN NARVESTAD AS

Overview
  • Total Patents
    28
About

STEIN NARVESTAD AS has a total of 28 patent applications. Its first patent ever was published in 1987. It filed its patents most often in Australia, Norway and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets civil engineering are DELFOS & ATLAS COPCO, HANDAN SPECIAL SHAFT SINKING CO LTD CHINA COAL ENERGY GROUP CO LTD and CHRISTOS BYRON PERCY.

Patent filings per year

Chart showing STEIN NARVESTAD ASs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering

Focus technologies

# Technology
#1 Shafts
#2 Earth drilling

Top inventors

# Name Total Patents
#1 Narvestad Stein 27

Latest patents

Publication Filing date Title
CA2861016A1 Cutter for shaft and/or tunnel boring
AU2003200796A1 Cutter for tunnel boring machine
CA2419876A1 Cutter for tunnel boring machine
AU6012094A A transport device for use in driving tunnels with a tunnel boring machine
WO9320324A1 A drilling head device for a tunnel boring machine
WO9115653A1 Ring clamp for a cutter ring in a tunnel drilling machine
CA2074531A1 Ring cutter for tunnel drilling in rock
AU4943790A Ring cutter for tunnel drilling in rock
EP0511954A1 Ring cutter for tunnel drilling in rock
AU1083888A Ring cutter for tunnel and shaft drilling in rock