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BARRETT HAENTJENS & CO

Overview
  • Total Patents
    27
About

BARRETT HAENTJENS & CO has a total of 27 patent applications. Its first patent ever was published in 1970. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets chemical engineering, machines and environmental technology are EKATO IND ANLAGEN VERWALT, JI HYUN SOOK and NYTEK AS.

Patent filings in countries

World map showing BARRETT HAENTJENS & COs patent filings in countries
# Country Total Patents
#1 United States 11
#2 United Kingdom 6
#3 Canada 5
#4 Australia 2
#5 Brazil 2
#6 Mexico 1

Patent filings per year

Chart showing BARRETT HAENTJENS & COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Werner Roy H 11
#2 Stirling Thomas E 10
#3 Stirling Thomas 4
#4 Haentjens Walter 4
#5 Decker Clifford J 3
#6 Ackerman John R 3
#7 Decker Clifford 1
#8 Haentjens Walter D 1
#9 Smith William H 1
#10 Werner Roy Howard 1

Latest patents

Publication Filing date Title
US5195867A Slurry pump shaft seal flushing
CA2041888A1 Apparatus and method for gas absorption in a liquid
US5085809A Apparatus for gas absorption in a liquid
CA2007497A1 Centrifugal pump having wear resistant components
AU4786390A Centrifugal pump having wear resistant components
BR9000069A Centrifugal pump having wear resistant components
US5092909A Biodesulphurization process utilizing bacteria
US5004484A Air stripping of liquids using high intensity turbulent mixer
US5043104A Apparatus for gas absorption in a liquid
US4917577A High speed centrifugal oxygenator
US4913619A Centrifugal pump having resistant components
US4761077A Mixing apparatus
CA1288704C Sludge removing apparatus
US4642919A Submersible sludge removing apparatus
US4474477A Mixing apparatus
CA1142135A Method for automatically collecting particle fractions based on their settling characteristics
US3672512A Static thickener and hydraulic rake therefor