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LEOPOLD CO INC F B

Overview
  • Total Patents
    55
About

LEOPOLD CO INC F B has a total of 55 patent applications. Its first patent ever was published in 1942. It filed its patents most often in United States, EPO (European Patent Office) and Canada. Its main competitors in its focus markets chemical engineering, environmental technology and measurement are PIELKENROOD VINITEX BV, EPCON NORGE AS and C & H WERKZEUGMASCHINEN GMBH.

Patent filings per year

Chart showing LEOPOLD CO INC F Bs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Brown Marvin A 18
#2 Bergmann Eugen O 15
#3 Geibel John 10
#4 Hsieh Richard W 10
#5 Geibel John L 8
#6 Beverly Richard P 7
#7 Eades Andrew 7
#8 Hsieh Richard 6
#9 Wolfe Gerald D 5
#10 Penno Jeffrey 5

Latest patents

Publication Filing date Title
AU3496301A Solid buoyant media induced flotation
AU4352500A Skimmer mechanism
US6890431B1 Buoyant media flotation
US6312611B1 Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in filter underdrain flumes
WO9804332A1 Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in flat bottom flumes
CA2208749A1 Reciprocal skimming device for dissolved air floatation basins
US5489388A Apparatus and method for improving gas backwash in lateral underdrains
US5269920A Cap system for underdrains in gravity filters
US5232592A Cap for underdrains in gravity filters
US5328608A Mutli-lateral filter underdrain block
US5160614A Air duct block for air/water underdrain systems in gravity filters
US5087362A Flume distribution system with removable block
US5149427A Cap for underdrains in gravity filters
US5108627A Filter underdrain block
US3638869A Sewage comminutor installation
US3606697A Tray for seed germination and the like
US3465889A Liquid clarifier weir construction
US3427878A Portable liquid measurement flume
US3494464A Rotary washer for filter beds
US3443436A Meter housing structure