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ROKO CORP

Overview
  • Total Patents
    40
About

ROKO CORP has a total of 40 patent applications. Its first patent ever was published in 1933. It filed its patents most often in United States and United Kingdom. Its main competitors in its focus markets engines, pumps and turbines, machines and civil engineering are NEILSEN KARL P, CANADA TIEFBOHRGERAETE UND MAS and SPICKET VALVES & PUMPS LTD.

Patent filings in countries

World map showing ROKO CORPs patent filings in countries
# Country Total Patents
#1 United States 38
#2 United Kingdom 2

Patent filings per year

Chart showing ROKO CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Coberly Clarence J 34
#2 Hanson Clyde F 2
#3 Wagner Edmond M 2
#4 Gurdon Swain 1
#5 James Coberly Clarence 1
#6 Coberly Clarenee J 1

Latest patents

Publication Filing date Title
US2368346A Fluid-operated pumping mechanism
US2310757A Means of preventing pitting of well pumps
US2311157A Fluid operated pump with built-in governor
US2311212A Bleeder construction
US2338903A Fluid operated pump assembly
US2307451A Hydraulic pump with mechanically actuated intake valve
US2327503A Well pump construction
US2291880A Single-acting hydraulic pump
US2268544A Lubricated piston
US2242777A Fluid operated pump
US2154727A Fluid operated pump
US2266356A Automatically governed pump
US2191093A Flow governor for fluid operated pumps
US2224216A Fluid flow governor
US2179482A Pulsometer gas anchor and method of operating
US2147766A Fluid-operated pump piston device
US2268543A Method of assembling fluid operated pumps
US2293426A Apparatus and method for liner assemblies
US2257107A Centrifugal separator
US2194740A Deep well pumping device