Inventor
Stuart W. Lumsden
Inventor
Ruxton, MD, US
Overview
Patents· 23 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Rprimary
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers24%
H04SStereophonic systems15%
G06FElectric digital data processing14%
G08BSignalling systems, e.g. personal calling systems14%
G10KSound-producing devices14%
H04LTransmission of digital information, e.g. telegraphic communication14%
A61FFilters implantable into blood vessels1%
H04MTelephonic communication1%
H04WWireless communication networks1%
PatentTitleYear
11,082,785Multi-zone media system and method for providing multi-zone media202110,932,024Loudspeaker system202110,798,505Multi-zone media system and method for providing multi-zone media202010,657,949System and method for integrating a home media system and other home systems202010,652,678System and method for providing user location-based multi-zone media202010,567,893Multi-zone media system and method for providing multi-zone media202010,462,590System and method for providing user location-based multi-zone media201910,349,158Loudspeaker system201910,341,793System and method for providing user location-based multi-zone media201910,327,086Head related transfer function equalization and transducer aiming of stereo dimensional array (SDA) loudspeakers201910,192,539System and method for providing a quiet zone20199,894,451'Multi-zone media system and method for providing multi-zone media'20189,807,484'Loudspeaker system'20179,767,786'System and method for providing a quiet zone'20179,706,320'System and method for providing user location-based multi-zone media'20179,584,935'Multi-zone media system and method for providing multi-zone media'20179,277,044'Transportable wireless loudspeaker and system and method for managing multi-user wireless media playback over a media playback system'20169,131,311'Canal phones with structure and method for selectively passing or blocking environmental ambient sound and switchable electrical connections'20158,634,586'Ceiling-mounted loudspeaker enclosure'2014D0357480'Edge surround for speaker'1995D0351839'Speaker'1994D0351388'Combined speaker and integral stand'19944,413,162'Moving coil transducers using multiple-stranded coils'1983Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1983–2014Patents assigned to POLK AUDIO INC (2)· patent assignee history
1983–2019Based in Baltimore, MD, US· patent location history
1994–1995Patents assigned to POLK INVEST CORPORATION (3)· patent assignee history
1994–1995Based in Towson, MD, US· patent location history
2014–2016Patents assigned to LUMSDEN STUART W (3)· patent assignee history
2014–2015Patents assigned to ORTH SCOTT (2)· patent assignee history
2017–2021Patents assigned to SOUND UNITED LLC (15)· patent assignee history
2017–2021Based in Ruxton, MD, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SOUND UNITED LLC | 15 | 2017–2021 |
| LUMSDEN STUART Wself | 3 | 2014–2016 |
| POLK INVEST CORPORATION | 3 | 1994–1995 |
| ORTH SCOTT | 2 | 2014–2015 |
| POLK AUDIO INC | 2 | 1983–2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Ruxton, Maryland, US | 15 | 2017–2021 |
| Baltimore, Maryland, US | 5 | 1983–2019 |
| Towson, Maryland, US | 3 | 1994–1995 |