Learn more

WALKER EXTRACT AND CHEMICAL CO

Overview
  • Total Patents
    14
About

WALKER EXTRACT AND CHEMICAL CO has a total of 14 patent applications. Its first patent ever was published in 1955. It filed its patents most often in Canada, United States and Switzerland. Its main competitors in its focus markets macromolecular chemistry and polymers, materials and metallurgy and civil engineering are NIPPON LATEX CHEM, CONTEKI DEV LTD and TAESAN ENG CO LTD.

Patent filings in countries

World map showing WALKER EXTRACT AND CHEMICAL COs patent filings in countries
# Country Total Patents
#1 Canada 5
#2 United States 3
#3 Switzerland 2
#4 Germany 2
#5 Denmark 2

Patent filings per year

Chart showing WALKER EXTRACT AND CHEMICAL COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Redfarn Cyril A 5
#2 Aubrey Redfarn Cyril 3
#3 Cyril Aubrey Redfarn 2
#4 Redfarn Cyril Aubrey 2

Latest patents

Publication Filing date Title
US2860058A Production of semi-ceramic materials
US2866773A Production of inorganic polymeric substances
US2979484A Manufacture of phenolic resins
CA568572A Manufacture of phenolic resins
CA570067A Production of semi-ceramic materials
CA629126A Abrasive article and method of making same
CA646985A Production of polymeric substances containing inorganic matter
CA610837A Abrasive article and method of making same