E01C 5/223

On prefabricated supporting or prefabricated foundation units, except coverings made of layers

Official title: {on prefabricated supporting or prefabricated foundation units, except coverings made of layers of similar elements}

E01C5/223 (On prefabricated supporting or prefabricated foundation units, except coverings made of layers) appears on 37 US grants and 40 published applications in this corpus.

Search patents in E01C
Granted patents
37
Published applications
40
Assignees
22
Inventors
70
Latest grant
28 Apr 2026

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E01C 5/223: granted patents and published applications per publication year
YearGranted patentsPublished applications
199010
199110
199200
199310
199400
199500
199600
199700
199800
199900
200010
200100
200223
200332
200411
200501
200600
200702
200813
200900
201012
201111
201220
201301
201411
201521
201611
201714
201843
201922
202013
202110
202223
202311
202432
202521
202612

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.