E04B 1/99

Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or

Official title: Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound (E04B1/82 takes precedence; acoustics in general G10K11/00; electric signal processing for producing a reverberation or echo sound G10K15/08)

E04B1/99 (Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or) appears on 130 US grants and 119 published applications in this corpus.

Search patents in E04B
Granted patents
130
Published applications
119
Assignees
80
Inventors
265
Latest grant
28 Oct 2025

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E04B 1/99: granted patents and published applications per publication year
YearGranted patentsPublished applications
197830
197900
198020
198120
198230
198320
198400
198500
198620
198700
198800
198910
199000
199100
199230
199300
199400
199500
199620
199720
199810
199950
200030
200101
200210
200320
200401
200500
200610
200710
200802
200912
201013
201110
201210
201333
201414
2015512
2016107
2017610
2018513
20191217
202099
2021127
2022312
2023117
202473
202562
202604

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