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For the Inventor, By the Inventor

Hemer, Germany

Calmar-albert Gmbh


USPTO Granted Patents = 2


Forward Citations = 93

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3 inventors (with patents filed for the assignee):

goldMedal Hans Grothoff (1 out of 5 patents)

silverMedal Karl-Heinz Blauert (1 out of 1 patent)

bronzeMedal Arno Vollmerhaus (1 out of 1 patent)


2 patents:

1. 5823396 - Child-resistant latch for trigger sprayer (1998-10-20),
2. 5615806 - Plunger lock-up dispenser (1997-04-01),
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USPTO Data Jan 1 1976 - Dec 23 2025

2 Patents

#13 in Hemer

#10,500 in Germany

...
Hemer, Germany

Calmar-albert Gmbh

Forward Citations = 93

3 inventors:

goldMedal Hans Grothoff (1 out of 5 patents)

silverMedal Karl-Heinz Blauert (1 out of 1 patent)

bronzeMedal Arno Vollmerhaus (1 out of 1 patent)

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