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WILLIAMSON DAVID

Overview
  • Total Patents
    19
About

WILLIAMSON DAVID has a total of 19 patent applications. Its first patent ever was published in 1900. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets environmental technology, civil engineering and machines are MILANI SAMANDAR, HSU KENNETH J and SUZHOU COOBOS EQUIPMENT ENG CO LTD.

Patent filings in countries

World map showing WILLIAMSON DAVIDs patent filings in countries

Patent filings per year

Chart showing WILLIAMSON DAVIDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Williamson David 16
#2 Dunn Kevin 1

Latest patents

Publication Filing date Title
US2011173850A1 Stiff Flexible Hoop and Method for Reducing Wrinkles in Clothing
US2010122740A1 Grey water holding tank
US2010122739A1 Grey water distributed control system
US2010122741A1 Grey water control system
US2010122738A1 Excess grey water disposal
US2010122945A1 Grey water conservation mechanism
GB0511220D0 Lifting apparatus
GB0410668D0 Flexible receptacle for liquids
GB0328818D0 Nozzle constructions
GB9024858D0 Machine for sticking down stencils using static electricity
US949949A Concealed hinge.
US912345A Power-transmitter.
CA70483A Starting stopping and reversing mechanism
CA70484A Friction clutch
CA38572A Centrifugal filter