For the Inventor, By the Inventor

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Alfeld/Leine, Germany

Kunkel-wagner Gmbh & Co. Kg

USPTO Granted Patents = 2

Forward Citations = 3

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4 inventors (with patents filed for the assignee):

Ekart Schaarschmidt (2 out of 2 patents)

Hermann Hofbauer (1 out of 4 patents)

Erhard Putzig (1 out of 1 patent)

4. Erich Muller (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 5421462 - Arrangement for dry reconditioning of used foundry sands (1995-06-06),

2. 5233765 - Process for the regeneration of used foundry sands (1993-08-10),

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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#2 in Alfeld/Leine

#10,556 in Germany

Alfeld/Leine, Germany

Kunkel-wagner Gmbh & Co. Kg

Forward Citations = 3

4 inventors:

Ekart Schaarschmidt (2 out of 2 patents)

Hermann Hofbauer (1 out of 4 patents)

Erhard Putzig (1 out of 1 patent)

4. Erich Muller (1 out of 1 patent)

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