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JOHN DOUGLAS COMPANY

Overview
  • Total Patents
    36
About

JOHN DOUGLAS COMPANY has a total of 36 patent applications. Its first patent ever was published in 1907. It filed its patents most often in United States. Its main competitors in its focus markets civil engineering, machines and mechanical elements are SLOAN WILLIAM E, CURTIN ANDREW F and PHILIP HAAS.

Patent filings in countries

World map showing JOHN DOUGLAS COMPANYs patent filings in countries
# Country Total Patents
#1 United States 36

Patent filings per year

Chart showing JOHN DOUGLAS COMPANYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Mcneil Daniel W 23
#2 Hohmeister Arthur E 4
#3 John Mcneil 3
#4 Mcneil John 2
#5 John Douglas 1
#6 Douglas Charles E 1
#7 Arthur Hohmeister 1
#8 Bedson Samuel 1

Latest patents

Publication Filing date Title
US2116529A Flush bowl structure
US2116528A Flush bowl structure
US2116527A Flush bowl
US1990194A Metering faucet
US1804213A Waste receptacle
US1776386A Elbow housing and the like
US1674365A Mixing-valve structure
US1574288A Drain cover
US1532408A Flush valve
US1533748A Tank lever
US1555134A Waste-pipe connection
US1418664A Self-closing faucet
US1338179A Ball-cock
US1355988A Automatic flush-valve
US1342124A Flushing-nozzle
US1302191A Machine for molding ceramics.
US1253406A Drain-coupling for porcelain troughs.
US1214020A Means for securing floats to their mounting-rods.
US1225987A Flush-valve for water-closets.
US1253405A Machine for molding ceramics.