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RICHFIELD OIL COMPANY OF CALIF

Overview
  • Total Patents
    30
About

RICHFIELD OIL COMPANY OF CALIF has a total of 30 patent applications. Its first patent ever was published in 1926. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets basic materials chemistry, machines and engines, pumps and turbines are KANSAS CITY GASOLINE COMPANY, GASOLINE PROD CO INC and PITTSBURGH MIDWAY COAL MINING.

Patent filings in countries

World map showing RICHFIELD OIL COMPANY OF CALIFs patent filings in countries
# Country Total Patents
#1 United States 20
#2 Canada 4
#3 United Kingdom 3
#4 France 2
#5 Germany 1

Patent filings per year

Chart showing RICHFIELD OIL COMPANY OF CALIFs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Arthur Lachman 12
#2 Rial Wirt D 3
#3 Black John C 3
#4 Chappell Marvin L 3
#5 Lachman Arthur 2
#6 Holzapfel George L 2
#7 Low Wilson H 1
#8 Pulliam Ira L 1
#9 Dowlen Tom H 1
#10 Barratt Whitford R 1

Latest patents

Publication Filing date Title
US1912479A Pressure reducing valve
US1890516A Process for treating gasoline stock
DE560812C Process for refining mineral oils
GB353054A Method of purifying and refining mineral oils
GB353055A Process of refining hydrocarbon oils
GB359419A Process of refining hydrocarbon oils
US1865081A Process of oxidizing oils
US1890058A Gas carburetor and method of carburation
US1908788A Apparatus for washing tops of vehicles
US1826147A Process of refining hydrocarbon oils with cobalt salts
US1826138A Process of refining hydrocarbon oils with sulphonic acid salts
US1864942A Color coat for cemented surfaces
US1777619A Process of purifying hydrocarbons
US1787505A Process of refining lubricating oils
US1782744A Process for recovering waste clays
US1712960A Method of refining mineral oils
CA298929A Process of purifying hydrocarbons
CA314262A Method of purifying and refining mineral oils
CA298928A Process of purifying hydrocarbons
CA314263A Process of refining hydrocarbon oils