H04R 25/48

Electric hearing aids: using constructional means for obtaining a desired frequency response

Official title: {using constructional means for obtaining a desired frequency response (H04R25/652 takes precedence)}

H04R25/48 (Electric hearing aids: using constructional means for obtaining a desired frequency response) appears on 216 US grants and 232 published applications in this corpus.

Search patents in H04R
Granted patents
216
Published applications
232
Assignees
91
Inventors
388
Latest grant
5 May 2026

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H04R 25/48: granted patents and published applications per publication year
YearGranted patentsPublished applications
197620
197710
197830
197910
198000
198110
198230
198340
198420
198520
198610
198720
198800
198940
199010
199120
199200
199310
199410
199500
199610
199700
199820
199910
200010
200101
200213
200322
200444
200506
200658
200729
200833
200914
201066
2011310
201285
201378
2014613
20151613
20161219
20171414
20181410
2019811
2020914
20211311
20221417
202399
20241110
2025612
2026610

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