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USPTO Data Jan 1 1976 - Dec 23 2025
1 Patents
#1 in SN Nijehaske
#3,281 in Netherlands
Efka Additives B.v.
Forward Citations = 2
4 inventors:
Efka Additives B.v.
Trademarks = 1
Forward Citations = 2
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4 inventors (with patents filed for the assignee):
Frank Oliver Heinrich Pirrung (1 out of 15 patents)
Lothar Alexander Engelbrecht (1 out of 9 patents)
Arend Noordam (1 out of 5 patents)
4. Elizabeth Maaike Loen (1 out of 2 patents)
1 patent:
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