Inventor
Thomas A. Froeschle
Inventor
Southborough, MA, 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 transducers31%
H02KDynamo-electric machines12%
H01FMagnets10%
A47JKitchen equipment5%
F01LCyclically operating valves for machines or engines5%
F02DControlling combustion engines5%
F16KValves5%
H03FAmplifiers5%
H05BElectric heating5%
Y10TTechnical subjects covered by former us classification5%
PatentTitleYear
11,095,966Acoustic device202110,609,465Acoustic device202010,154,347Bushings constrained by compression in levered apparatus201810,104,721Induction cookware20189,049,501'Audio system with synthesized positive impedance'20158,796,598'Induction cookware'20148,224,009'Audio system with synthesized positive impedance'20128,139,804'Electroacoustic transducing with a bridge phase plug'20127,965,010'Linear motor with patterned magnet arrays'20117,623,670'Waveguide electroacoustical transducing'20097,252,053'Electromagnetic actuator and control'20077,128,032'Electromagnetic actuator and control'20066,771,787'Waveguide electroacoustical transducing'20045,701,039'Electromechanical transducing'19975,574,445'Digital absolute position encoders'19965,345,165'Frequency-stabilized two-state modulation using hysteresis control'19945,216,723'Permanent magnet transducing'19935,025,885'Multiple chamber loudspeaker system'19914,981,309'Electromechanical transducing along a path'1991RE031679'Loudspeaker enclosure with acoustical compliance resonating with port mass at frequency below system resonance'19844,456,872'Current controlled two-state modulation'19844,146,745'Loudspeaker enclosure with multiple acoustically isolated drivers and a common port'19794,061,890'Loudspeaker with single layer rectangular wire voice coil wound on slit metal bobbin with a notch in the adjacent pole plate'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–2021Patents assigned to BOSE CORP (21)· patent assignee history
1977–2009Based in Framingham, MA, US· patent location history
1979Based in Acton, MA, US· patent location history
1984–2021Based in Southborough, MA, US· patent location history
1991–2004Based in Southboro, MA, US· patent location history
2009–2015Patents assigned to FROESCHLE THOMAS A (5)· patent assignee history
2012–2015Patents assigned to DELPAPA KENNETH B (2)· patent assignee history
2012–2015Patents assigned to NICHOLS GEORGE (2)· patent assignee history
2012–2015Patents assigned to NUSSBAUM MICHAEL B (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BOSE CORP | 21 | 1977–2021 |
| FROESCHLE THOMAS Aself | 5 | 2009–2015 |
| DELPAPA KENNETH B | 2 | 2012–2015 |
| NICHOLS GEORGE | 2 | 2012–2015 |
| NUSSBAUM MICHAEL B | 2 | 2012–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Southborough, Massachusetts, US | 15 | 1984–2021 |
| Southboro, Massachusetts, US | 4 | 1991–2004 |
| Framingham, Massachusetts, US | 3 | 1977–2009 |
| Acton, Massachusetts, US | 1 | 1979 |