John Dahl — 3 Patents at Thx | Patent Leaderboard

John Dahl has been granted 3 US patents while listed as an inventor at Thx. The first was granted in 2013 and the most recent in September 2025. John Dahl ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list John Dahl in Winnipeg, MB, CA.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
12417872	Bushing for distribution transformer	Marek Kornowski, Raniero Montanino, Sadegh Ghanbar, Justin Schoonbaert	2025-09-16
8509457	Tone balance volume control	Casey Divine	2013-08-13
8452028	Dynamic surround channel volume control	Casey Divine	2013-05-28

John Dahl — 3 Patents

Issued Patents All Time

Patent Widget