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Zeller Plastik Koehn, Graebner & Co.

USPTO Granted Patents = 3

Forward Citations = 87

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4 inventors (with patents filed for the assignee):

Ulrich K Brach (1 out of 5 patents)

Wilhelm Wiesinger (1 out of 1 patent)

Alois Persch (1 out of 2 patents)

4. Klaus Thanisch (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 4877144 - Plastic threaded sleeve (1989-10-31),

2. 4638917 - Tamper proof closure (1987-01-27),

3. 4572412 - Container made of plastic which can be elastically deformed (1986-02-25),

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USPTO Data Jan 1 1976 - Dec 30 2025

3 Patents

#2 in Zell

#8,279 in Germany

Zeller Plastik Koehn, Graebner & Co.

Forward Citations = 87

4 inventors:

Ulrich K Brach (1 out of 5 patents)

Wilhelm Wiesinger (1 out of 1 patent)

Alois Persch (1 out of 2 patents)

4. Klaus Thanisch (1 out of 1 patent)

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