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For the Inventor, By the Inventor

Erfurt, Germany

Iosono Gmbh


USPTO Granted Patents = 2

% Expired Patents = 50.0

Forward Citations = 2

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6 inventors (with patents filed for the assignee):

goldMedal Robert Steffens (2 out of 6 patents)

silverMedal Frank Melchior (2 out of 11 patents)

bronzeMedal Martin Dausel (1 out of 6 patents)

4.  Andreas Partzsch (1 out of 1 patent)

5.  Uwe Michaelis (1 out of 1 patent)

6.  Andreas Graefe (1 out of 1 patent)


2 patents:

1. 9402144 - Apparatus for changing an audio scene and an apparatus for generating a directional function (2016-07-26),
2. 8462966 - Apparatus and method for calculating filter coefficients for a predefined loudspeaker arrangement (2013-06-11),
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USPTO Data Jan 1 1976 - Sep 15 2026

2 Patents

#6 in Erfurt

#10,677 in Germany

Erfurt, DE
Erfurt, Germany

Iosono Gmbh

Forward Citations = 2

6 inventors:

goldMedal Robert Steffens (2 out of 6 patents)

silverMedal Frank Melchior (2 out of 11 patents)

bronzeMedal Martin Dausel (1 out of 6 patents)

4.  Andreas Partzsch (1 out of 1 patent)

5.  Uwe Michaelis (1 out of 1 patent)

Please report any incorrect information to [email protected]
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