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JOHANNES ERHARD

Overview
  • Total Patents
    22
About

JOHANNES ERHARD has a total of 22 patent applications. Its first patent ever was published in 1953. It filed its patents most often in Germany, Canada and France. Its main competitors in its focus markets mechanical elements and civil engineering are OMAL S P A, ZHEJIANG HUAYI PREC MACHINERY CO LTD and Anhui tunxi high pressure valve co ltd.

Patent filings in countries

World map showing JOHANNES ERHARDs patent filings in countries
# Country Total Patents
#1 Germany 6
#2 Canada 4
#3 France 4
#4 United States 3
#5 Austria 2
#6 Greece 1
#7 Ireland 1
#8 Netherlands 1

Patent filings per year

Chart showing JOHANNES ERHARDs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Reppert Karl 3
#2 Erich Ruopp 1
#3 Fischer Eugen 1
#4 Kafka Johannes 1
#5 Waldenmaier Heinz Dipl Kfm 1
#6 Willert Ernst 1
#7 Siegmar Forster 1
#8 Hawle Erwin 1
#9 Peppert Karl 1
#10 Heinz Maier 1

Latest patents

Publication Filing date Title
IE883288L Gate valve spindle and housing arrangement
US3570244A Power piston drive for armatures
DE1221067B Display device for fittings
DE1244074B hydrant
US3223381A Gate valve with resilient sealing mounted in the valve body
DE1203071B Gate valve with a closure piece provided with a support made of elastic material
DE1239899B Regulating valve, especially for hot water and low pressure steam heating
DE1168723B Spindle neck bearing and seal in the hood head of fittings
FR1109352A Non-return valve for hydraulic lines
FR66825E Shut-off valve
FR65119E Shut-off valve
US2876984A Butterfly valves
FR1073176A Shut-off valve
CA553549A Butterfly valves
CA576502A Check valves for flowing media in pipelines
CA587497A Clack valves
CA557305A Butterfly valves