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ENVIROTECH CORP

Overview
  • Total Patents
    989
  • GoodIP Patent Rank
    221,245
  • Filing trend
    0.0%
About

ENVIROTECH CORP has a total of 989 patent applications. It increased the IP activity by 0.0%. Its first patent ever was published in 1964. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets chemical engineering, environmental technology and machines are ASHBROOK CORP, AQUA AEROBIC SYSTEMS INC and FROUD DAVID PETER.

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Davis Steven S 78
#2 Davis S 33
#3 Emmett Robert C Jr 30
#4 O'Connor Lawrence T 21
#5 Haymore Ralph B 19
#6 Davis S S 16
#7 Emmett Jr Robert C 15
#8 Davis Steven Stringham 15
#9 Dahlstrom Donald A 13
#10 Gelfand Peter C 12

Latest patents

Publication Filing date Title
FR3068373A1 Long-lasting mosquito repellent textile
US5227136A Bioslurry reactor for treatment of slurries containing minerals, soils and sludges
US5064532A Apparatus for shifting filter plates in a filter press
US5106499A Apparatus for shifting filter plates in a filter press
US5092482A Sludge digesters with separate liquid chambers to buoy ballast members
US5116443A Clarifier apparatus and methods with 3D arrays
US4933524A Clarifier apparatus and methods with 3-D arrays
US5057284A Bioslurry reactor for treatment of slurries containing minerals, soils and sludges
US4927537A Tape drive with self-expanding coils for sludge collector
US5006241A Apparatus for shifting filter plates in a filter press
US4931190A Flocculating agent combinations for mineral slime filtration systems
US4968008A Bioleaching apparatus and system
US5007620A Apparatus for biological processing of metal-containing ores
AU1824088A Cable lifting mechanism for sedimentation device
AU6858087A Method and apparatus for biological processing of metal- containing ores
US4974816A Method and apparatus for biological processing of metal-containing ores
US4806239A Apparatus for shifting filter plates in a filter press
US4728082A Apparatus for biological processing of metal containing ores
US4647215A Ragless propeller draft tube mixer
US4732608A Method for biological processing of metal-containing ores