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PIETER DE GRAAFF

Overview
  • Total Patents
    11
About

PIETER DE GRAAFF has a total of 11 patent applications. Its first patent ever was published in 1952. It filed its patents most often in United Kingdom, Germany and Finland. Its main competitors in its focus markets environmental technology, transport and civil engineering are YU HAIJUAN, CHENGDU ISHUNTONG ENV PROT TECH CO LTD and TAIZHOU JIAJIE ENVIRONMENTAL PROTECTION TECH CO LTD.

Patent filings in countries

World map showing PIETER DE GRAAFFs patent filings in countries
# Country Total Patents
#1 United Kingdom 7
#2 Germany 3
#3 Finland 1

Patent filings per year

Chart showing PIETER DE GRAAFFs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Graaff Pieter De 3
#2 Pieter De Graaff 1

Latest patents

Publication Filing date Title
GB1065887A A device for reducing the size of coarse offal e.g. household refuse and conveying same to the interior of a hopper
GB886604A Improvements in and relating to refuse vehicles comprising a tipping receptacle and a hopper
GB806106A Improvements in and relating to apparatus for the removal of obstructions from conduits
GB776128A Improvements in and relating to tanks
GB749951A Improvements in and relating to devices for emptying bins into a receptacle, particularly a dust cart
GB725324A Improvements in and relating to road vehicle tipping bodies, particularly for refusevehicles
GB699504A Devices for emptying bins into a receptacle, particularly a refuse collecting cart