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For the Inventor, By the Inventor

Wattwil, Switzerland

Oprel Ag


USPTO Granted Patents = 1

Forward Citations = 4

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1 inventor (with patents filed for the assignee):

goldMedal Emil Ackermann (1 out of 3 patents)


1 patent:

1. 5854667 - Electrooptical filter cartridge and a method for manufacturing the same (1998-12-29),
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USPTO Data Jan 1 1976 - Dec 16 2025

1 Patents

#10 in Wattwil

#4,292 in Switzerland

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Wattwil, Switzerland

Oprel Ag

Forward Citations = 4

1 inventor:

goldMedal Emil Ackermann (1 out of 3 patents)

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