Inventor
Ewald Frasl
Inventor
Biedermannsdorf, AT
Overview
Patents· 22 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 transducers79%
Y10TTechnical subjects covered by former us classification18%
H05KPrinted circuits4%
PatentTitleYear
9,769,583'Vibration membrane assembly for speaker, speaker and method for producing the assembly'20178,892,174'Loudspeaker'20148,628,830'Method of and device for modifying the properties of a membrane for an electroacoustic transducer'20148,437,496'Membrane for an acoustic device and acoustic device'20138,284,964'Compound membrane, method of manufacturing the same, and acoustic device'20127,895,727'Method for manufacturing an electroacoustical transducer comprising a membrane configuration'20117,644,801'Membrane with a high resistance against buckling and/or crinkling'20107,416,047'Diaphragm for a loudspeaker with a moving coil'20087,306,073'Electroacoustic transducer comprising a membrane with a middle area comprising stiffening grooves'20077,043,046'Method for manufacturing an electroacoustical transducer comprising a membrane configuration'20066,831,989'Electroacoustic transducer having a moving coil and having movable holding elements for the connecting leads of the moving coil'20046,799,361'Method for manufacturing an electroacoustical transducer comprising a membrane configuration'20046,697,496'Electroacoustic transducer comprising a membrane with an improved pleats area'20046,526,152'Electroacoustic transducer having a moving coil and elastic holding elements for the connecting leads of the moving coil'20036,510,232'Electroacoustic transducer having diaphragm with coil mounting projections and interposed stabilizing walls'20036,370,257'Apparatus including an electroacoustic transducer having terminal contacts which extend in the direction of the transducer axis and including a printed circuit board having mating contacts'20026,178,252'Electroacoustic transducer comprising a diaphragm having through portions for mounting a voice coil'20016,075,866'Electroacoustic transducer having axially extending corrugated supporting means for the diaphragm'20006,072,886'Electroacoustic transducer comprising spring contacts formed with at least one bend'20006,038,327'Electroacoustic transducer comprising a closing member for closing the rear volume of the transducer'20005,727,077'Electroacoustic transducer comprising a closing member'19985,303,209'Electroacoustic transducer having a partition wall and a mask wall'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–2002Patents assigned to PHILIPS CORP (7)· patent assignee history
1994–2017Based in Biedermannsdorf, AT· patent location history
2003–2006Patents assigned to KONINKL PHILIPS ELECTRONICS NV (6)· patent assignee history
2007–2011Patents assigned to NXP BV (3)· patent assignee history
2008–2014Patents assigned to FRASL EWALD (5)· patent assignee history
2012–2014Patents assigned to KNOWLES ELECTRONICS ASIA PTE (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PHILIPS CORP | 7 | 1994–2002 |
| KONINKL PHILIPS ELECTRONICS NV | 6 | 2003–2006 |
| FRASL EWALDself | 5 | 2008–2014 |
| KNOWLES ELECTRONICS ASIA PTE | 3 | 2012–2014 |
| NXP BV | 3 | 2007–2011 |
Locations
| Location | Patents | Span |
|---|---|---|
| Biedermannsdorf, AT | 22 | 1994–2017 |