DB

Douglas J. Button

HI Harman International Industries, Incorporated: 30 patents #13 of 1,027Top 2%
JI Jbl, Incorporated: 3 patents #1 of 13Top 8%
SO Sonos: 2 patents #299 of 446Top 70%
Apple: 1 patents #12,251 of 18,612Top 70%
EL Electro-Voice: 1 patents #11 of 17Top 65%
UU University Of Utah: 1 patents #787 of 1,848Top 45%
📍 Simi Valley, CA: #30 of 1,200 inventorsTop 3%
🗺 California: #12,730 of 386,348 inventorsTop 4%
Overall (All Time): #87,950 of 4,157,543Top 3%
37
Patents All Time

Issued Patents All Time

Showing 26–37 of 37 patents

Patent #TitleCo-InventorsDate
7012345 Electromagnetic motor with flux stabilization ring, saturation tips, and radiator Jerry Moro 2006-03-14
6952874 Two-stage phasing plug system in a compression driver Alexander V. Salvatti 2005-10-11
6847726 Shorting rings in dual-coil dual-gap loudspeaker drivers Ralph E. Hyde, Alex V. Salvatti 2005-01-25
6801634 Loudspeaker coil suspension system 2004-10-05
6774510 Electromagnetic motor with flux stabilization ring, saturation tips, and radiator Jerry Moro 2004-08-10
6768806 Shorting rings in dual-coil dual-gap loudspeaker drivers Ralph E. Hyde, Alex V. Salvatti 2004-07-27
5828767 Inductive braking in a dual coil speaker driver unit 1998-10-27
5748760 Dual coil drive with multipurpose housing 1998-05-05
5664023 Low TCR wire in high power audio coils 1997-09-02
5533132 Loudspeaker thermal management structure 1996-07-02
5042072 Self-cooled loudspeaker 1991-08-20
4933975 Dynamic loudspeaker for producing high audio power 1990-06-12