H04N 21/278

Content descriptor database or directory service for end-user access

Official title: Content descriptor database or directory service for end-user access {(details of content or meta data based information retrieval of video data in video databases G06F16/739)}

H04N21/278 (Content descriptor database or directory service for end-user access) appears on 589 US grants and 726 published applications in this corpus.

Search patents in H04N
Granted patents
589
Published applications
726
Assignees
235
Inventors
963
Latest grant
6 Oct 2026

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H04N 21/278: granted patents and published applications per publication year
YearGranted patentsPublished applications
199810
199900
200000
200111
2002117
200316
200426
200526
2006312
200737
2008221
2009220
2010147
2011611
20121524
20131627
20143085
20155555
20164546
20176084
20184654
20194930
20204570
20215138
20224030
20233322
20243130
20252512
2026105

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

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