Portfolio comparison
Dolby International AB vs John L. Mason
Side-by-side portfolio analysis — patents indexed, year ranges, and activity timeline.
Company A
Dolby International AB
Patents indexed
1
Year range
2020
Most recent
2020
telecommunicationsconsumer_electronicssoftware
Top Patents1 enriched
US RE47935· 2020
How Digital Audio Compression Saves Space by Copying Frequencies
Activity by Decade
2020s1
Top Patents1 enriched
US 22186· 1858
John Mason's 1858 Patent for the Mason Jar Lid
Activity by Decade
1850s1
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