Learn more

GRAY JOHN L

Overview
  • Total Patents
    11
About

GRAY JOHN L has a total of 11 patent applications. Its first patent ever was published in 1914. It filed its patents most often in United States, WIPO (World Intellectual Property Organization) and Canada. Its main competitors in its focus markets basic materials chemistry, civil engineering and chemical engineering are PERMEATOR CORP, PANGA MOHAN K R and DUSTERHOFT RONALD G.

Patent filings in countries

World map showing GRAY JOHN Ls patent filings in countries

Patent filings per year

Chart showing GRAY JOHN Ls patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Gray John L 11
#2 Hartman Allan R 6
#3 Herzfeld Ronald Michael 3

Latest patents

Publication Filing date Title
US2010300693A1 Enzyme Surfactant Fluids Used in Non-Gel Hydraulic Fracturing of Oil Wells
US2009288843A1 Enzyme enhanced oil recovery (EEOR) for waterflooding operations
US2009260827A1 Enzyme enhanced oil recovery (EEOR) for water alternating gas (WAG) systems
US2009062153A1 Enzyme enhanced oil/gas recovery (EEOR/EEGR) using non-gel hydraulic fracturing in hydrocarbon producing wells
US2009050325A1 Enzyme enhanced oil recovery (EEOR) for near wellboretreatment of oil and gas with greater than 50% barrel of oil equivalent (BOE) gas production
US1192889A Apparatus for use in connection with the distillation of petroleum and products therefrom.
CA799021A Antenna systems