For the Inventor, By the Inventor

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Marienheide, Germany

August Ruggeberg

USPTO Granted Patents = 2

Trademarks = 1

Forward Citations = 12

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6 inventors (with patents filed for the assignee):

Hermann Hardenbicker (1 out of 2 patents)

Theodor Schneider (1 out of 2 patents)

Diethard Sinram (1 out of 1 patent)

4. Peter Alfer (1 out of 1 patent)

5. Norbert Klein (1 out of 1 patent)

6. Rolf Suhrheinrich (1 out of 1 patent)

2 patents: Sort by Forward Citations

1. 5649857 - Abrasive wheel (1997-07-22),

2. 5584755 - Abrasive wheel for hand-guided grinding machines, in particular abrasive (1996-12-17),

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USPTO Data Jan 1 1976 - Dec 16 2025

2 Patents

#4 in Marienheide

#10,495 in Germany

Marienheide, Germany

August Ruggeberg

Forward Citations = 12

6 inventors:

Hermann Hardenbicker (1 out of 2 patents)

Theodor Schneider (1 out of 2 patents)

Diethard Sinram (1 out of 1 patent)

4. Peter Alfer (1 out of 1 patent)

5. Norbert Klein (1 out of 1 patent)

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