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W J STOKVIS KONINK FABRIEK VAN

Overview
  • Total Patents
    41
About

W J STOKVIS KONINK FABRIEK VAN has a total of 41 patent applications. Its first patent ever was published in 1948. It filed its patents most often in France, United Kingdom and Germany. Its main competitors in its focus markets mechanical elements, machines and civil engineering are KARL PETER MAY, POLYTEC CO LTD and NIBCO.

Patent filings in countries

World map showing W J STOKVIS KONINK FABRIEK VANs patent filings in countries
# Country Total Patents
#1 France 13
#2 United Kingdom 10
#3 Germany 8
#4 United States 3
#5 Austria 2
#6 Belgium 2
#7 Canada 1
#8 Denmark 1
#9 Spain 1

Patent filings per year

Chart showing W J STOKVIS KONINK FABRIEK VANs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Voorhorst Derk Jan 4
#2 Jan Voorhorst Derk 2
#3 Ouden Frits Jan Willem Den 1
#4 Voorhorst Derk J 1
#5 Berg Reinir Herman Van Den 1
#6 Derk Bilderbeek 1
#7 Willem Den Ouden Frits Jan 1
#8 Koopmans Cornelis 1

Latest patents

Publication Filing date Title
GB1122940A Improvements relating to flushing cisterns
GB1129487A Improvements in liquid flow cut-off valves
GB1161255A Float Operated Valve System
DE1609276A1 Cistern
DE1221996B Drain valve for a toilet cistern or the like.
GB912932A Improvements in fluid flow control valves
US3092441A Plastic moulding
GB972195A Improvement relating to injection moulding
GB849767A Improvements relating to flushing systems for water closets, lavatories and the like
DE1097917B Lift flush device for a toilet bowl
US2939208A Apparatus for producing a collar or coupling for a tube
DE1128369B Float for the inlet valve of a water tank, e.g. B. a Klosettspuelkastens
DE1120219B Cross clamp
GB848468A Improvements relating to clamps
GB814950A Improvements relating to deformable tubes
GB814951A Improvements relating to tools for inserting rings in rubber and like tubes
DE1056437B Method and tool for producing a collar on a pipe made of easily deformable, elastic material such as plastic, rubber or the like.
ES234830A1 Procedure and apparatus for the formation of a necklace in a tube of elastic and deformable material (Machine-translation by Google Translate, not legally binding)
DE820661C Chicken cock
GB655917A An improvement in or relating to stopcocks