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SILBERKUHL WILHELM J

Overview
  • Total Patents
    12
About

SILBERKUHL WILHELM J has a total of 12 patent applications. Its first patent ever was published in 1960. It filed its patents most often in Canada, United States and Belgium. Its main competitors in its focus markets civil engineering are KOREAN STYLE HOUSE DEV CO LTD, VELUT JEAN and WILLARD MULFORD LOGAN.

Patent filings in countries

World map showing SILBERKUHL WILHELM Js patent filings in countries
# Country Total Patents
#1 Canada 9
#2 United States 2
#3 Belgium 1

Patent filings per year

Chart showing SILBERKUHL WILHELM Js patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering

Top inventors

# Name Total Patents
#1 Silberkuhl Wilhelm J 11
#2 Haeussler Ernst 3
#3 Kastl Uwe 2
#4 Ernst Haeussler 2
#5 Manthey Horst 1
#6 Uwe Kastl 1
#7 Hohla Johannes 1

Latest patents

Publication Filing date Title
US3142136A Hyperboloidal shell for roof vaults and the like
US3184892A Concrete construction element and process for making the same
CA661194A Vaulted roof structure
CA738176A Shell structure for concrete roofs and the like
CA735661A Vault roof
CA571040A Building structure
CA700240A Concrete construction element and process for making same
CA870340A Roof structure and process for making same
CA661196A Prestressed roof structure
CA823854A Prefabricated construction element