H04R 2201/40

Details of arrangements for obtaining desired directional characteristic by combining a number

Official title: Details of arrangements for obtaining desired directional characteristic by combining a number of identical transducers covered by H04R1/40 but not provided for in any of its subgroups

H04R2201/40 (Details of arrangements for obtaining desired directional characteristic by combining a number) appears on 1,953 US grants and 2,137 published applications in this corpus.

Search patents in H04R
Granted patents
1,953
Published applications
2,137
Assignees
755
Inventors
3,760
Latest grant
6 Oct 2026

Filings by year

H04R 2201/40: granted patents and published applications per publication year
YearGranted patentsPublished applications
197610
197720
197820
197900
198010
198100
198210
198300
198410
198500
198620
198740
198840
198910
199000
199120
199200
199310
199430
199520
199640
199780
1998120
199930
200070
200191
2002311
2003214
2004820
2005630
20061638
20071534
20081137
20091848
20101939
20112734
20125842
20133760
20143754
20155771
20167898
2017109130
2018130153
2019165153
2020182167
2021167219
2022176185
2023194179
2024158130
2025132109
20267881

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

Subgroups

Granted patents

Recent patents

Most cited

By later US patents