H04N 21/441

Acquiring end-user identification

Official title: Acquiring end-user identification {, e.g. using personal code sent by the remote control or by inserting a card}

H04N21/441 (Acquiring end-user identification) appears on 1,156 US grants and 1,625 published applications in this corpus.

Search patents in H04N
Granted patents
1,156
Published applications
1,625
Assignees
438
Inventors
2,172
Latest grant
22 Sep 2026

Filings by year

H04N 21/441: granted patents and published applications per publication year
YearGranted patentsPublished applications
198610
198700
198810
198900
199000
199110
199200
199300
199400
199500
199600
199700
199820
199950
200040
200164
20021239
2003332
2004320
2005724
20061030
2007942
20081337
2009832
20102155
20112053
20123356
20133896
201478186
2015114128
201697107
20178887
20188383
20196460
20207993
20217694
20227072
20237763
20246252
20254948
20262232

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

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