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WALTER BRUNO H

Overview
  • Total Patents
    12
About

WALTER BRUNO H has a total of 12 patent applications. Its first patent ever was published in 1981. It filed its patents most often in Canada, United States and Australia. Its main competitors in its focus markets civil engineering, chemical engineering and measurement are SICHUAN SHENGNUO OIL AND GAS ENGINEERING TECH SERVICE CO LTD, KOBOLD CORP and AKER WELL SERVICE AS.

Patent filings in countries

World map showing WALTER BRUNO Hs patent filings in countries
# Country Total Patents
#1 Canada 6
#2 United States 4
#3 Australia 1
#4 WIPO (World Intellectual Property Organization) 1

Patent filings per year

Chart showing WALTER BRUNO Hs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Walter Bruno H 10
#2 Walter Bruno Hartwig 2
#3 Angman Per G 1

Latest patents

Publication Filing date Title
US2010065330A1 Down hole multiple piston tools operated by pulse generation tools and methods for drilling
CA2331021A1 Method and apparatus for generating acoustic pulses on the surface and conveying these pulses through the drill string to the drill bit to increase rate of drilling
CA2328636A1 Air drilling system
CA2175296A1 Flow pulsing method and apparatus for the increase of the rate of drilling
CA1285551C Flow pulsing apparatus with axially movable valve
CA1209569A Intermittently rotatable down hole drilling tool, thrust bearing for use therein and method of assembly of such thrust bearing
CA1225327A Drill string jar
US4427079A Intermittently rotatable down hole drilling tool