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For the Inventor, By the Inventor

Wülfrath, Germany

Rheinkalk Gmbh

Calculating rank
USPTO Granted Patents = 9

% Expired Patents = 22.2


Forward Citations = 5

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26 inventors (with patents filed for the assignee):

goldMedal Christopher Pust (6 out of 6 patents)

silverMedal Arnd Pickbrenner (5 out of 5 patents)

bronzeMedal Wolfgang Rückert (3 out of 4 patents)

4.  Martin Sindram (2 out of 2 patents)

5.  Theodor Günther (2 out of 2 patents)

6.  Matthias Blöser (2 out of 2 patents)

7.  Denise Alfenas Moreira (2 out of 2 patents)

8.  Günter Scholz (2 out of 6 patents)

9.  Wolfgang König (2 out of 2 patents)

10.  Heiko Saure (1 out of 1 patent)

11.  Volker Spicker (1 out of 1 patent)

12.  Wolfgang Rabe (1 out of 5 patents)

13.  Helma Honig (1 out of 1 patent)

14.  Rainer Gadow (1 out of 10 patents)

15.  Frank Kern (1 out of 1 patent)


9 patents:

1. 11167244 - Activation of a material containing alkaline-earth metal carbonate and alkaline-earth metal hydroxide for the dry scrubbing of flue gas (2021-11-09),
2. 10781500 - Granules containing agglomerated bulk material (2020-09-22),
3. 10532313 - Activation of a material containing alkaline-earth metal carbonate and alkaline-earth metal hydroxide for the dry scrubbing of flue gas (2020-01-14),
4. 10494650 - Process for production of biogas (2019-12-03),
5. 9988695 - Method for producing an agglomerate made of fine material containing metal oxide for use as a blast furnace feed material (2018-06-05),
6. 9290395 - Methods for treating bodies of water (2016-03-22),
7. 9175363 - Method for producing an agglomerate made of fine material containing metal oxide for use as a blast furnace feed material (2015-11-03),
8. 8617402 - Method of raising the pH of acidic bodies of water (2013-12-31),
9. 8613801 - Sinterable semi-coke powder with high bulk density (2013-12-24),
Company Overview
Rheinkalk GmbH is a leading supplier of lime and limestone products in Germany. With over 160 years of experience, the company produces high-quality materials for various industries including agriculture, construction, and environmental protection. Rheinkalk GmbH is committed to sustainability and innovation, continuously investing in research and development to provide cutting-edge solutions for their customers.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 3 2026

9 Patents

#2 in Wülfrath

#4,079 in Germany

Wülfrath, DE
Wülfrath, Germany

Rheinkalk Gmbh

Forward Citations = 5

26 inventors:

goldMedal Christopher Pust (6 out of 6 patents)

silverMedal Arnd Pickbrenner (5 out of 5 patents)

bronzeMedal Wolfgang Rückert (3 out of 4 patents)

4.  Martin Sindram (2 out of 2 patents)

5.  Theodor Günther (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Rheinkalk Gmbh. Retrieved from https://idiyas.com/company/rheinkalk

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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