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SLACK & PARR LTD

Overview
  • Total Patents
    14
About

SLACK & PARR LTD has a total of 14 patent applications. Its first patent ever was published in 1926. It filed its patents most often in United Kingdom, United States and Germany. Its main competitors in its focus markets machines, chemical engineering and textiles and paper are PATTERSON FOUNDRY & MACHINE CO, HERFELD GMBH & CO KG DR and VERVANT LTD.

Patent filings in countries

World map showing SLACK & PARR LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 8
#2 United States 4
#3 Germany 2

Patent filings per year

Chart showing SLACK & PARR LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hoyle J 2
#2 Griffin T 2
#3 Edward Bryan William 1
#4 Barrington Tom F 1

Latest patents

Publication Filing date Title
US3754734A Coloration of hot melt polymers
US3754735A Polymer coloration
GB1311162A Means for feeding coloured hot melt polymer to the spinnerets of a spinning machine
US2542301A Manufacture of filaments, films, or the like of artificial materials
GB631495A Improvements in or relating to multiple spindle heads for drilling or like machines
GB621446A Improvements in or relating to gear pumps
GB562622A Improvements in machines for winding threads, filaments, films and the like
GB556890A Improvements in gear pumps
GB365777A Improvements in or relating to patterning mechanism for knitting machines
US1679021A Petrol and other measured-quantity delivery pump
GB280355A Improvements in or relating to coin-freed mechanism for petrol, oil and like pumps