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BARTLETT HAYWARD CO

Overview
  • Total Patents
    105
About

BARTLETT HAYWARD CO has a total of 105 patent applications. Its first patent ever was published in 1911. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets chemical engineering, mechanical elements and machines are LPD TECHNOLOGIES INC, ORTNER HEINRICH and SLICK CORP.

Patent filings in countries

World map showing BARTLETT HAYWARD COs patent filings in countries
# Country Total Patents
#1 United States 80
#2 Canada 11
#3 United Kingdom 6
#4 Germany 4
#5 France 4

Patent filings per year

Chart showing BARTLETT HAYWARD COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Wagner Frederick H 26
#2 Kuehn Paul M 11
#3 Santos John R L 8
#4 Morton Allen W 6
#5 Kennedy James S 5
#6 Gustave Fast 4
#7 Wagner Frederick Henry 3
#8 Meyer Henry C A 3
#9 Henry Wagner Frederick 2
#10 Bruce Howard 2

Latest patents

Publication Filing date Title
GB452090A Apparatus for and method of expanding pistons
US2041355A Apparatus for expanding pistons
GB456015A Improvements in piston rings
US2054596A Carton
US2035435A Packing ring
US2045503A Dust collector
US2032020A Method of expanding pistons
US2006902A Packing ring
US2045478A Tank
US2018412A Expander for pistons
US2005305A Dust collector
US2006365A Packing ring
US1980499A Dust quencher for water gas apparatus and the like
US1864924A Waterless gas holder
US1870351A Dust condenser
US1847179A Recovery of metallic wastes from gas-washers for metallurgical furnaces
US1876002A Centrifugal dry-dust arrester
US1870153A Flexible shaft coupling
US1812042A Continuous filter
US1743171A Centrifugal dust arrester