Inventor
Christopher T. Welsh
Inventor
Fishers, IN, US
Overview
Patents· 15 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 transducers38%
LOC1414%
B81BMicrostructural devices or systems, e.g. micromechanical devices10%
B81CProcesses or apparatus specially adapted for the manufacture or treatment of microstructural devices or systems10%
H03GControl of amplification10%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h1010%
G06FElectric digital data processing5%
H04MTelephonic communication5%
PatentTitleYear
8,515,084'Passive sound pressure level limiter with balancing circuit'20138,340,307'Passive sound pressure level limiter'20128,300,871'Earphone for wideband communication'20128,155,366'Transducer package with interior support frame'20128,107,652'Controlled leakage omnidirectional electret condenser microphone element'20127,825,509'Transducer package with transducer die unsupported by a substrate'20107,790,492'Method for fabricating a transducer package with the transducer die unsupported by a substrate'20107,751,575'Microphone system for communication devices'20107,646,865'Telephone handset coupling system'2010D0432119'Microphone'20005,739,481'Speaker mounting system'19985,696,359'Portable loudspeaker/directional microphone peripheral'1997D0384357'Directional microphone'1997D0381024'Directional microphone'19975,506,908'Directional microphone system'1996Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1996–2000Based in Noblesville, IN, US· patent location history
1997–1998Patents assigned to LUCENT TECHNOLOGIES INC (4)· patent assignee history
2010–2012Patents assigned to MWM ACOUSTICS LLC (5)· patent assignee history
2010–2013Based in Fishers, IN, US· patent location history
2012–2013Patents assigned to MICHEL ALAN DEAN (4)· patent assignee history
2012–2013Patents assigned to WELSH CHRISTOPHER TODD (4)· patent assignee history
2012–2013Patents assigned to DYER MEDFORD ALAN (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MWM ACOUSTICS LLC | 5 | 2010–2012 |
| LUCENT TECHNOLOGIES INC | 4 | 1997–1998 |
| MICHEL ALAN DEAN | 4 | 2012–2013 |
| WELSH CHRISTOPHER TODDself | 4 | 2012–2013 |
| DYER MEDFORD ALAN | 3 | 2012–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Fishers, IN, US | 9 | 2010–2013 |
| Noblesville, IN, US | 6 | 1996–2000 |