A41B 2400/20

Air permeability

Official title: Air permeability; Ventilation

A41B2400/20 (Air permeability) appears on 98 US grants and 129 published applications in this corpus.

Search patents in A41B
Granted patents
98
Published applications
129
Assignees
68
Inventors
225
Latest grant
25 Nov 2025

Filings by year

A41B 2400/20: granted patents and published applications per publication year
YearGranted patentsPublished applications
197710
197800
197900
198020
198110
198210
198310
198420
198500
198620
198700
198810
198900
199000
199100
199200
199320
199450
199550
199610
199710
199840
199900
200050
200151
200222
200312
200431
200513
200617
200706
200859
200912
201035
201111
201222
201304
201423
201535
201614
201734
2018110
2019513
2020313
202188
202226
202343
202456
202524
202605

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