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JOHNSON DENNIS E J

Overview
  • Total Patents
    19
About

JOHNSON DENNIS E J has a total of 19 patent applications. Its first patent ever was published in 1981. It filed its patents most often in United States, Canada and India. Its main competitors in its focus markets environmental technology, basic materials chemistry and chemical engineering are PROTERRGO INC, SU HAOQIANG and EAST CHINA ENG SCIENCE AND TECH CO LTD.

Patent filings per year

Chart showing JOHNSON DENNIS E Js patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Johnson Dennis E J 19
#2 Johnson Scott J 9
#3 Wiley Marcus A 2
#4 Kleinke Richard A 2
#5 Abramov Grigori A 2

Latest patents

Publication Filing date Title
CA1289511C System of ionized oxygen allotrope gas water purification and method and apparatus therefor
US4655933A System of ionized oxygen allotrope gas water purification and method and apparatus therefor
CA1219255A Covering method and device for in-line mass dispersion transfer of a gas flow into a liquid flow
US4563286A System of ionized oxygen allotrope gas water purification and method and apparatus therefor
US4562014A Method and device for in-line mass dispersion transfer of a gas flow into a liquid flow
US4491551A Method and device for in-line mass dispersion transfer of a gas flow into a liquid flow
CA1208160A Electro-chemical system for liquid filtration
CA1178554A System of ionized oxygen allotrope gas water purification and method and apparatus therefor
US4382866A Electro-chemical system for liquid filtration