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CONTRA SHEAR HOLDINGS

Overview
  • Total Patents
    52
About

CONTRA SHEAR HOLDINGS has a total of 52 patent applications. Its first patent ever was published in 1976. It filed its patents most often in Australia, New Zealand and China. Its main competitors in its focus markets chemical engineering and machine tools are GAUDFRIN GUY, BAUKO BAUKOOPERATION GMBH and ROTOCLEAN IND CORP.

Patent filings per year

Chart showing CONTRA SHEAR HOLDINGSs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

# Technology
#1 Separation
#2 Presses

Top inventors

# Name Total Patents
#1 Burgess George 34
#2 Burgess G 8
#3 Pitches E W 3
#4 Jiyooji Baagesu 3
#5 Bell Raymond Harold 3
#6 Sweetlove Michael John 2
#7 Pitches E 2
#8 Pitches Ernest W 2
#9 Aanesuto Uooren Pitsuchiizu 1
#10 Pitches Ernest Warren 1

Latest patents

Publication Filing date Title
AU1214097A Screw press head
NZ284165A Separating apparatus nozzle assembly biased and trained against inside of rotary screen
WO9529762A1 Separation apparatus nozzle assembly
CN1072485A Improved machinery cover
CN1067826A Screen bars and screen apparatus
AU4137889A An inlet launder for a clarifyer
NZ227050A Pressure separation apparatus; rotating drum screen with tangential ejection nozzles
NZ225178A Inlet launder for cone-tree type clarifier; cone and baffle distributes inflow outside cone-tree
GB8328817D0 Method of dewatering a material and a press therefor
NZ205530A Rotary drum screen with circumferential wedge-shaped wires
NZ201655A Supplying liquid slurries to rotary screens
AU2863377A Screening method and apparatus
NZ182084A Rotating drum screen