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H D TECH INC

Overview
  • Total Patents
    37
About

H D TECH INC has a total of 37 patent applications. Its first patent ever was published in 1985. It filed its patents most often in United States, Norway and Australia. Its main competitors in its focus markets surface technology and coating, materials and metallurgy and chemical engineering are EDOUARD KREBS, KREBSKOSMO GES F CHEMIE ING TE and CHLORALP.

Patent filings in countries

World map showing H D TECH INCs patent filings in countries

Patent filings per year

Chart showing H D TECH INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Clifford Arthur L 26
#2 Rogers Derek J 25
#3 Dong Dennis F 12
#4 Mathur Indresh 9
#5 James Allan 8
#6 Dong Dennis 8
#7 Noonan Edward B 8
#8 Loftfield Richard E 7
#9 Bissett David 6
#10 Benesch Katharina M 5

Latest patents

Publication Filing date Title
US5316629A Process for maintaining electrolyte flow rate through a microporous diaphragm during electrochemical production of hydrogen peroxide
US5244547A Decreasing the concentration of hydroxyl ions in aqueous alkaline peroxide solutions
US5106464A Decreasing the concentration of hydroxyl ions in aqueous alkaline peroxide solutions
EP0360536A2 Cell and method of operating a liquid-gas electrochemical cell
US4969981A Cell and method of operating a liquid-gas electrochemical cell
US4921587A Porous diaphragm for electrochemical cell
US4872957A Electrochemical cell having dual purpose electrode
US4927509A Bipolar electrolyzer
US4891107A Porous diaphragm for electrochemical cell