Inventor
Charles King
Inventor
Oak Park, IL, US
Overview
Patents· 9 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 transducers50%
A41DOuterwear17%
A61BDiagnosis17%
B81BMicrostructural devices or systems, e.g. micromechanical devices8%
B81CProcesses or apparatus specially adapted for the manufacture or treatment of microstructural devices or systems8%
PatentTitleYear
11,057,718Load change diagnostics for acoustic devices and methods202110,869,141Audio device with valve state management202010,820,083Acoustic assembly having an acoustically permeable membrane202010,687,153Hearing device with contextually actuated valve20208,401,215'Receiver assemblies'20137,680,292'Personal listening device'20105,187,815'Needlestick protective glove'19934,942,626'Needlestick protective glove'1990D0290907'Gun rack'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–2013Patents assigned to KING CHARLES B (2)· patent assignee history
1990–1993Patents assigned to MEDEV CORP (2)· patent assignee history
1990–1993Based in Hampton, VA, US· patent location history
2010–2021Patents assigned to KNOWLES ELECTRONICS LLC (6)· patent assignee history
2010–2013Based in Chicago, IL, US· patent location history
2013Patents assigned to ABRY MICHAEL J (1)· patent assignee history
2013Patents assigned to HALLA MARK F (1)· patent assignee history
2020Based in Oak Park, IL, US· patent location history
2020Based in Itasca, IL, US· patent location history
2021Based in Oak Park, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KNOWLES ELECTRONICS LLC | 6 | 2010–2021 |
| KING CHARLES Bself | 2 | 1987–2013 |
| MEDEV CORP | 2 | 1990–1993 |
| ABRY MICHAEL J | 1 | 2013 |
| HALLA MARK F | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Oak Park, Illinois, US | 2 | 2020 |
| Chicago, Illinois, US | 2 | 2010–2013 |
| Hampton, Virginia, US | 2 | 1990–1993 |
| Oak Park, California, US | 1 | 2021 |
| Itasca, Illinois, US | 1 | 2020 |