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Wetter, Germany

Bleistahl Produktions-gmbh & Co. Kg

USPTO Granted Patents = 8

EPO Patents = 4

Trademarks = 4

Forward Citations = 21

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11 inventors (with patents filed for the assignee):

Ekkehard Kohler (5 out of 5 patents)

Dirk Emde (4 out of 4 patents)

Anna Seyfarth (3 out of 3 patents)

4. Ingwar Hunsche (2 out of 2 patents)

5. Christian Blecking (2 out of 2 patents)

6. Holger Schmidt (2 out of 8 patents)

7. Thomas Lelgermann (2 out of 2 patents)

8. Gerd Kruger (2 out of 2 patents)

9. Robert Hammelmann (1 out of 1 patent)

10. Kirit Dalal (1 out of 1 patent)

11. Anil V Nadkarni (1 out of 19 patents)

12. Ekkehard KÖHLER (0 patent)

13. Ingwar HÜNSCHE (0 patent)

14. Ekkehard KÖHLER (0 patent)

15. Thomas Lelgemann (0 patent)

8 patents: Sort by Forward Citations

1. 11311936 - Valve seat ring (2022-04-26),

2. 10611062 - Rotary indexing press (2020-04-07),

3. 10208636 - Highly thermally conductive valve seat ring (2019-02-19),

4. 9988951 - Double/triple-layer valve guide (2018-06-05),

5. 9702277 - Highly thermally conductive valve seat ring (2017-07-11),

6. 6112803 - Process for producing cylinder heads for internal combustion engines (2000-09-05),

7. 6039785 - Material for the powder-metallurgical production of shaped parts, in (2000-03-21),

8. 5735043 - Method for mounting and finishing valve seat rings pre-manufactured by (1998-04-07),

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USPTO Data Jan 1 1976 - Dec 2 2025

8 Patents

#4 in Wetter

#4,365 in Germany

Wetter, Germany

Bleistahl Produktions-gmbh & Co. Kg

Forward Citations = 21

11 inventors:

Ekkehard Kohler (5 out of 5 patents)

Dirk Emde (4 out of 4 patents)

Anna Seyfarth (3 out of 3 patents)

4. Ingwar Hunsche (2 out of 2 patents)

5. Christian Blecking (2 out of 2 patents)

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