H04H 20/38

Arrangements for distribution where lower stations

Official title: Arrangements for distribution where lower stations, e.g. receivers, interact with the broadcast

H04H20/38 (Arrangements for distribution where lower stations) appears on 639 US grants and 610 published applications in this corpus.

Search patents in H04H
Granted patents
639
Published applications
610
Assignees
299
Inventors
1,090
Latest grant
9 Jun 2026

Filings by year

H04H 20/38: granted patents and published applications per publication year
YearGranted patentsPublished applications
197710
197800
197900
198000
198100
198200
198300
198400
198510
198600
198700
198810
198910
199030
199160
199260
199330
199440
199530
1996150
1997200
1998290
1999220
2000160
2001208
20021420
20031015
20041326
2005521
20061528
20071254
2008624
2009932
20102221
20112031
20123030
20133538
20144328
20152533
20163743
20172937
20183827
20193618
20202924
20211216
2022139
20231411
2024810
2025105
202631

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

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