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ASHBROOK SIMON HARTLEY INC

Overview
  • Total Patents
    34
About

ASHBROOK SIMON HARTLEY INC has a total of 34 patent applications. Its first patent ever was published in 1983. It filed its patents most often in United States, Australia and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets environmental technology, basic materials chemistry and chemical engineering are BIOLOGISK AVFALLSHANTERING, BEDMINSTER BIOCONVERSION CORP and KNEER FRANZ X.

Patent filings per year

Chart showing ASHBROOK SIMON HARTLEY INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Johnson Harold W 10
#2 Johnson Richard P 6
#3 Derryberry David B 5
#4 Black Robert C 5
#5 Blackwood Kenneth R 5
#6 Schiene Thomas M 5
#7 Christie William 5
#8 Bengoechea Jaime 5
#9 Wachinski Anthony M 5
#10 Xia Yongming 5

Latest patents

Publication Filing date Title
US5582722A Continuous self-cleaning filtration unit
US5248612A Apparatus for composting using improved charging and discharging sequence
US5133872A Method and apparatus for controlling throughput in a beltpress
US5076827A Method and apparatus for composting using improved charging and discharging sequence
US5049486A Temperature monitoring apparatus and method in a composting system through which organic matter is moved to effect composting
US5023178A Composting method and apparatus utilizing air assist to aid in movement of organic matter
US4891142A Moving bed filtration apparatus and method
US5139554A Composting method and apparatus utilizing inclined vessel
US4836100A Apparatus for regulating feed thickness in a belt press
US4839053A Biomass growth process with separate aeration and media compartments
EP0262210A1 Adjustable ramp for dewatering device.
GB8627978D0 A method of and apparatus for treating waste water
GB8326692D0 Moving belt filter