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Hendrik Dolleman
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Amsterdam, NL
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Patents Grants
last 30 patents
Information
Patent Grant
Microphone for a hearing aid
Patent number
8,369,552
Issue date
Feb 5, 2013
Sonion Nederland B.V.
Wilmink Engbert
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Electroacoustic transducer with a diaphragm and method for fixing a...
Patent number
7,706,561
Issue date
Apr 27, 2010
Sonion Nederland B.V.
Engbert Wilmink
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method for fixing a diaphragm in an electroacoustic transducer
Patent number
7,492,919
Issue date
Feb 17, 2009
Sonion Nederland B.V.
Wilmink Engbert
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Microphone for a hearing aid
Patent number
7,292,700
Issue date
Nov 6, 2007
Sonion Nederland B.V.
Wilmink Engbert
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Cylindrical microphone having an electret assembly in the end cover
Patent number
7,286,680
Issue date
Oct 23, 2007
Sonion Nederland B.V.
Michael G. M. Steeman
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Electroacoustic transducer with a diaphragm, and method for fixing...
Patent number
7,110,565
Issue date
Sep 19, 2006
Sonionmicrotonic Nederland B.V.
Wilmink Engbert
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Cylindrical microphone having an electret assembly in the end cover
Patent number
7,062,058
Issue date
Jun 13, 2006
Sonion Nederland B.V.
Michael G. M. Steeman
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Miniature microphone
Patent number
7,043,035
Issue date
May 9, 2006
SonionMicrotronic Nederland B.V.
Zacharias M. Rittersma
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Electroacoustic transducer with improved shock resistance
Patent number
6,075,870
Issue date
Jun 13, 2000
Microtronic B.V.
Onno Geschiere
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Microphone for a hearing aid
Publication number
20070258610
Publication date
Nov 8, 2007
SonionMicrotronic Nederland B.V.
Wilmink Engbert
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Method for fixing a diaphragm in an electroacoustic transducer
Publication number
20060230598
Publication date
Oct 19, 2006
Wilmink Engbert
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Cylindrical microphone having an electret assembly in the end cover
Publication number
20060215867
Publication date
Sep 28, 2006
Sonion Nederland B.V.
Michael G.M. Steeman
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Electroacoustic transducer with a diaphragm and method for fixing a...
Publication number
20050111688
Publication date
May 26, 2005
Engbert Wilmink
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Miniature microphone
Publication number
20030103639
Publication date
Jun 5, 2003
Zacharias M. Rittersma
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Cylindrical microphone having an electret assembly in the end cover
Publication number
20020154790
Publication date
Oct 24, 2002
Michael G. M. Steeman
H04 - ELECTRIC COMMUNICATION TECHNIQUE