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For the Inventor, By the Inventor

Berlin, Germany

Sentech Instruments Gmbh


USPTO Granted Patents = 3

% Expired Patents = 33.3

Forward Citations = 29

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7 inventors (with patents filed for the assignee):

goldMedal Uwe Richter (2 out of 10 patents)

silverMedal Uwe Wielsch (2 out of 2 patents)

bronzeMedal Albrecht Kruger (2 out of 2 patents)

4.  Helmut Witek (2 out of 2 patents)

5.  Michael Arena (1 out of 1 patent)

6.  Georg Dittmar (1 out of 1 patent)

7.  Uwe Henninger (1 out of 1 patent)


3 patents:

1. 6897955 - Ellipsometer (2005-05-24),
2. 5526117 - Method for the determination of characteristic values of transparent (1996-06-11),
3. 5517128 - Method and arrangement for charge carrier profiling in semiconductor (1996-05-14),
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USPTO Data Jan 1 1976 - Sep 15 2026

3 Patents

#245 in D-1000 Berlin

#8,449 in Germany

Berlin, DE
Berlin, Germany

Sentech Instruments Gmbh

Forward Citations = 29

7 inventors:

goldMedal Uwe Richter (2 out of 10 patents)

silverMedal Uwe Wielsch (2 out of 2 patents)

bronzeMedal Albrecht Kruger (2 out of 2 patents)

4.  Helmut Witek (2 out of 2 patents)

5.  Michael Arena (1 out of 1 patent)

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