Learn more

J B KNIGHT CO INC

Overview
  • Total Patents
    20
About

J B KNIGHT CO INC has a total of 20 patent applications. Its first patent ever was published in 1960. It filed its patents most often in United States, United Kingdom and Germany. Its main competitors in its focus markets agriculture, machines and environmental technology are ECKART CHARLES F, E VAN ZANTEN HOLDING B V and ELEKTRO DIESEL.

Patent filings in countries

World map showing J B KNIGHT CO INCs patent filings in countries
# Country Total Patents
#1 United States 14
#2 United Kingdom 3
#3 Germany 1
#4 Spain 1
#5 African Intellectual Property Organization 1

Patent filings per year

Chart showing J B KNIGHT CO INCs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Agriculture
#2 Machines
#3 Environmental technology

Top inventors

# Name Total Patents
#1 Purtell Rufus J 12
#2 Purtell Rufus Judson 2
#3 Hogg Carl D 2
#4 Judson Purtell Rufus 1
#5 Knight Robert Bruce 1

Latest patents

Publication Filing date Title
GB1076249A Method and device for use in an irrigation system
US3298388A Draining sprinkler connectors
US3344991A Method and apparatus for clearing sand from irrigation pipes
US3361360A Irrigation system
US3373936A Irrigation systems
US3360200A Irrigation apparatus having dirigible wheels
US3361364A Crop-guard for agricultural irrigation sprinklers
GB1118382A Irrigation system
US3286723A Irrigation system
US3272438A Irrigation system
US3281081A Irrigation system
US3230969A Irrigation system
US3281080A Irrigation system
US3237867A Trrigation system
US3245608A Irrigation system
US3220654A Irrigation pipe moving system