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.
# | Country | Total Patents | |
---|---|---|---|
#1 | Canada | 9 | |
#2 | United States | 2 | |
#3 | Belgium | 1 |
# | Industry | |
---|---|---|
#1 | Civil engineering |
# | Technology | |
---|---|---|
#1 | Roof coverings | |
#2 | General building constructions | |
#3 | Structural elements |
# | 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 |
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 |