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Kerpen, Germany

Boll & Kirch Filterbau Gmbh

USPTO Granted Patents = 9

EPO Patents = 8

Trademarks = 4

Forward Citations = 104

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13 inventors (with patents filed for the assignee):

Rudiger Lennartz (5 out of 7 patents)

Willi Rott (4 out of 5 patents)

Karsten Cartarius (2 out of 2 patents)

4. Andreas Finsel (2 out of 2 patents)

5. Carsten Tietze (1 out of 1 patent)

6. Gerd Stahl (1 out of 1 patent)

7. Heinz Sindorf (1 out of 2 patents)

8. Heinz Heinrich Leonhard Sindorf (1 out of 1 patent)

9. Wilhelm Vieten (1 out of 2 patents)

10. Rüdiger Lennartz (1 out of 2 patents)

11. Sivagnanam Kandiah (1 out of 2 patents)

12. Ingo Romey (1 out of 24 patents)

13. Joachim Gutermuth (1 out of 1 patent)

14. Stefan Schmitz (1 patent)

15. Robert Jellinggaard (1 patent)

9 patents: Sort by Forward Citations

1. 10238998 - Backflush filter and filter insert for the latter (2019-03-26),

2. 10035085 - Backflushing filter and filter insert for the same (2018-07-31),

3. 9144807 - Centrifuge for separating solid matter from a liquid and centrifuge rotor for the same (2015-09-29),

4. 7250109 - Back-wash filter (2007-07-31),

5. 6890434 - Backflush filter, in particular for filtering lubricant oil (2005-05-10),

6. 4804481 - Helical spring apparatus and process for detaching filter cake (1989-02-14),

7. 4517086 - Tubular filter apparatus (1985-05-14),

8. 4415448 - Flush-back filter (1983-11-15),

9. 4256583 - Flush-back filter (1981-03-17),

Boll & Kirch Filterbau GmbH is a leading global filtration technology company that specializes in the design and manufacturing of high-quality filters for various industries, including oil and gas, marine, power generation, and chemical processing. With over 70 years of experience, Boll & Kirch offers innovative filtration solutions that are reliable, efficient, and environmentally friendly.

This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

9 Patents

#1 in Kerpen

#4,033 in Germany

Kerpen, Germany

Boll & Kirch Filterbau Gmbh

Forward Citations = 104

13 inventors:

Rudiger Lennartz (5 out of 7 patents)

Willi Rott (4 out of 5 patents)

Karsten Cartarius (2 out of 2 patents)

4. Andreas Finsel (2 out of 2 patents)

5. Carsten Tietze (1 out of 1 patent)

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