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DAVID RONALD TULLIS

Overview
  • Total Patents
    19
About

DAVID RONALD TULLIS has a total of 19 patent applications. Its first patent ever was published in 1922. It filed its patents most often in United Kingdom. Its main competitors in its focus markets materials and metallurgy, machines and foods and drinks are ALLOYS & CHEM CORP, SUMET CORP and METALLURG DE HOBOKEN SOCIETE A.

Patent filings in countries

World map showing DAVID RONALD TULLISs patent filings in countries
# Country Total Patents
#1 United Kingdom 19

Patent filings per year

Chart showing DAVID RONALD TULLISs patent filings per year from 1900 to 2020

Latest patents

Publication Filing date Title
GB721675A Control system for an impact hammer mill
GB682785A Improvements in or relating to impact hammer mills
GB464942A Improvements relating to feeding devices for animal cages
GB449350A Improvements in the refining of ferrous and non-ferrous metals and alloys
GB449262A Improvements in or relating to hot plates
GB448176A Process of treating animal fodder
GB420694A Improvements in and relating to the refining and casting of non-ferrous metals and alloys
GB420672A Process of refining zinc
GB403179A Process and apparatus for the treatment of waste metal products
GB382749A Production of an aluminium alloy
GB371201A Improvements relating to spring suspension devices for motor road vehicles
GB356290A Electrolytic production of aluminium alloys
GB370494A Process of refining copper
GB352671A Process of purifying or refining non-ferrous metals and alloys
GB351177A Process of purifying or refining non-ferrous metals and alloys
GB319967A Production of an aluminium alloy
GB302440A Production of an aluminium alloy
GB272326A An improved process for purifying or refining aluminium and its alloys
GB207679A Process for the recovery of aluminium