Inventor
Jacobus A. Jonkman
Inventor
Dorchester, CA
Overview
Patents· 5 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 transducers71%
H05KPrinted circuits29%
PatentTitleYear
10,477,324Test apparatus for binaurally-coupled acoustic devices201910,171,920Test apparatus for binaurally-coupled acoustic devices20199,961,455Test apparatus for binaurally-coupled acoustic devices20189,860,652'Test apparatus for binaurally-coupled acoustic devices'20187,062,056'Directional hearing aid tester'2006Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2006Patents assigned to ETYMONIC DESIGN INC (1)· patent assignee history
2006–2019Based in Dorchester, CA· patent location history
2018–2019Patents assigned to ETYMONIC DESIGN INCORPORATED (4)· patent assignee history
2018Patents assigned to COLE JOHN W (1)· patent assignee history
2018Patents assigned to COLE WILLIAM A (1)· patent assignee history
2018Patents assigned to JONKMAN JACOBUS A (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ETYMONIC DESIGN INCORPORATED | 4 | 2018–2019 |
| COLE JOHN W | 1 | 2018 |
| COLE WILLIAM A | 1 | 2018 |
| ETYMONIC DESIGN INC | 1 | 2006 |
| JONKMAN JACOBUS Aself | 1 | 2018 |
Locations
| Location | Patents | Span |
|---|---|---|
| Dorchester, CA | 5 | 2006–2019 |