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For the Inventor, By the Inventor

Heroldsberg, Germany

Schwan-stabilo Schwanhäusser Gmbh & Co. Kg


USPTO Granted Patents = 5


Trademarks = 3

Forward Citations = 13

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9 inventors (with patents filed for the assignee):

goldMedal Thomas Spengler (2 out of 2 patents)

silverMedal Ivan Horvat (2 out of 4 patents)

bronzeMedal Hanns Dieter Denninger (1 out of 1 patent)

4.  Klaus Dieter Schröder (1 out of 1 patent)

5.  Hans-Dieter Denninger (1 out of 1 patent)

6.  Klaus-Dieter Schröder (1 out of 1 patent)

7.  Gerhard Möck (1 out of 3 patents)

8.  Jörg Rahn (1 out of 1 patent)

9.  Karl-Peter Kaempf (1 out of 1 patent)

10.  Karl-Peter Kämpf (6 patents)


5 patents:

1. 7604694 - Marking liquid (2009-10-20),
2. 7365107 - Marking liquid (2008-04-29),
3. 7121753 - Pen (2006-10-17),
4. 7086527 - Receptacle for accommodating at least one pencil (2006-08-08),
5. 7004660 - Closure cap with refilling function (2006-02-28),
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USPTO Data Jan 1 1976 - Dec 16 2025

5 Patents

#5 in 90562 Heroldsberg

#5,993 in Germany

...
Heroldsberg, Germany

Schwan-stabilo Schwanhäusser Gmbh & Co. Kg

Forward Citations = 13

9 inventors:

goldMedal Thomas Spengler (2 out of 2 patents)

silverMedal Ivan Horvat (2 out of 4 patents)

bronzeMedal Hanns Dieter Denninger (1 out of 1 patent)

4.  Klaus Dieter Schröder (1 out of 1 patent)

5.  Hans-Dieter Denninger (1 out of 1 patent)

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