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22 inventors (with patents filed for the assignee):

Alfred Roeder (2 out of 6 patents)

Friedrich Schmitz (2 out of 2 patents)

Rudiger Oberste-Padtberg (1 out of 2 patents)

4. Heinz Hoberg (1 out of 4 patents)

5. Thomas Schwertmann (1 out of 2 patents)

6. Bernd Morun (1 out of 2 patents)

7. Ekkehard Kienow (1 out of 2 patents)

8. Dieter Opitz (1 out of 2 patents)

9. Dietrich Gruschka (1 out of 1 patent)

10. Walter Hess (1 out of 1 patent)

11. Jurgen Labuschewski (1 out of 1 patent)

12. Ulrich Glinka (1 out of 1 patent)

13. Michael Webeling (1 out of 1 patent)

14. Ewald Wicke (1 out of 1 patent)

15. Josef Wuhrer (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 6074620 - Method for the cleaning of exhaust gas and prevention of explosions (2000-06-13),

2. 5876689 - Process for the manufacture of milk of lime (1999-03-02),

3. 5229097 - Process for the production of chlorosilicates (1993-07-20),

4. 4636379 - Process for producing calcium hydroxide (1987-01-13),

5. 4249894 - Blast furnace for heating granular material (1981-02-10),

6. 4242144 - Bituminous mixed composition and filler for same containing (1980-12-30),

7. 3991172 - Process for the production of reactive calcium oxide (1976-11-09),

Rheinische Kalksteinwerke GmbH is a German company specializing in the extraction and production of high-quality limestone. With over 100 years of experience, we offer a wide range of limestone products for various applications including construction, agriculture, and industrial use. Our commitment to quality and sustainability has made us a trusted partner for customers worldwide.

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USPTO Data Jan 1 1976 - Dec 16 2025

7 Patents

#2 in Wulfrath

#4,794 in Germany

Wulfrath, Germany

Rheinische Kalksteinwerke Gmbh