Inventor · disambiguated record
Alfredo D. Ferrin
Also filed as: FERRIN ALFREDO · FERRIN ALFREDO D
4 granted patents·241 citations·filing 1992–2003
82Inventor score
Technology areasH04R
Top patents by PatentIndex Score
4 records- 0182US5539835APlanar-type loudspeaker with dual density diaphragmSOUND ADVANCE SYST INC·Filed 1994·Granted Jul 23, 1996·73 cites·10 claims
- 0281US5693917APlanar diaphragm loudspeakerSOUND ADVANCE SYST INC·Filed 1996·Granted Dec 2, 1997·82 cites·37 claims
- 0378US5425107APlanar-type loudspeaker with dual density diaphragmBERTAGNI ELECTRONIC SOUND TRAN·Filed 1992·Granted Jun 13, 1995·68 cites·6 claims
- 0473US6929091B2Planar diaphragm loudspeaker and related methodsSOUND ADVANCE SYST INC·Filed 2003·Granted Aug 16, 2005·18 cites·19 claims
Join the waitlist — get patent alerts
Get an alert when Alfredo D. Ferrin files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →