E01F 3/00

Landing stages for helicopters

Official title: Landing stages for helicopters, e.g. located above buildings (layout of airfields B64F; buildings or like structures for special purposes E04H)

E01F3/00 (Landing stages for helicopters) appears on 55 US grants and 56 published applications in this corpus.

Search patents in E01F
Granted patents
55
Published applications
56
Assignees
43
Inventors
106
Latest grant
11 Aug 2026

Filings by year

E01F 3/00: granted patents and published applications per publication year
YearGranted patentsPublished applications
198010
198100
198200
198300
198410
198500
198600
198730
198810
198910
199010
199100
199200
199300
199410
199500
199600
199700
199800
199900
200010
200100
200200
200300
200400
200501
200600
200700
200801
200910
201002
201101
201211
201322
201416
201533
201661
201723
201812
201903
202016
202122
202257
202358
202483
202543
202631

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