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DUPLATE CANADA LTD

Overview
  • Total Patents
    93
About

DUPLATE CANADA LTD has a total of 93 patent applications. Its first patent ever was published in 1956. It filed its patents most often in Canada, France and Spain. Its main competitors in its focus markets machines, materials and metallurgy and surface technology and coating are JIAXING CENTURY ELECTRONICS CO LTD, ASAHI RUBBER KK and KIKUCHI TAKASHI.

Patent filings in countries

World map showing DUPLATE CANADA LTDs patent filings in countries
# Country Total Patents
#1 Canada 83
#2 France 4
#3 Spain 2
#4 United Kingdom 2
#5 Germany 1
#6 United States 1

Patent filings per year

Chart showing DUPLATE CANADA LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Miller Robert A 9
#2 Owen William 8
#3 Downes Daniel T 6
#4 Dennison Brook J 5
#5 Bateson Sydney 4
#6 Knudsen Percy E 4
#7 Erath George F 3
#8 Sherts James Hervey 3
#9 Englehart Oscar D 3
#10 Black Lloyd V 3

Latest patents

Publication Filing date Title
FR2143069A1 Smooth ceramic substrate - for microcircuits consisting of very dense aluminium oxide with nonporous surface
US3011265A Dehydration of glass surfaces
ES230191A1 Improvements in the manufacture of laminated safety glass panels (Machine-translation by Google Translate, not legally binding)
ES227536A1 Improvements in the construction of rollers for the preliminary pressure of glass. (Machine-translation by Google Translate, not legally binding)
GB816479A Method of and apparatus for treating a glass surface
GB778501A Improvements in or relating to the manufacture of heater panels
CA803168A Optical deviation contour mapping device
CA456559A Apparatus for removing marginal portions of glass units
CA456557A Process and apparatus for bending glass sheets
CA456735A Glass bending frame
CA469710A Fittings for doors
CA470355A Adjustable hinges for doors
CA842129A Method of making ceramic articles and the product thereof
CA456893A Light polarizing medium
CA469520A Multiple glazed units
CA470695A Installation for laminated glass
CA470882A Window construction
CA469709A Window construction
CA456366A Glass supporting skeleton mould
CA456544A Laminated nonglare unit