Patent holdings for IPC class G11B 27/28

Total number of patents in this class: 1030

10-year publication summary

37
51
79
99
143
116
120
82
66
39
2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Principal owners for this class

Owner
All patents
This class
Sony Corporation
43781
77
Koninklijke Philips Electronics N.V.
25833
70
Google LLC
30575
38
Samsung Electronics Co., Ltd.
105375
28
DISH Technologies L.L.C.
1370
27
Microsoft Technology Licensing, LLC
47537
24
Apple Inc.
37123
21
Panasonic Intellectual Property Corporation of America
4101
21
Thomson Licensing
4819
19
Adobe Inc.
5423
17
Thomson Licensing S.A.
1304
16
International Business Machines Corporation
73710
14
Second Spectrum, Inc.
31
14
Nokia Technologies Oy
11160
12
AT&T Intellectual Property II, L.P.
1959
11
Verizon Patent And Licensing Inc.
5272
11
Rovi Guides, Inc.
1826
11
Canon Inc.
39606
10
U.S. Philips Corporation
1156
9
LG Electronics Inc.
59921
8
Other owners 572