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Heidelberg, Germany

Heidelberger Zement Ag

USPTO Granted Patents = 15

Forward Citations = 114

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17 inventors (with patents filed for the assignee):

Adolf Meyer (7 out of 7 patents)

Manfred Pfeifer (3 out of 3 patents)

Joachim Unsin (2 out of 2 patents)

4. Helmut S Erhard (2 out of 2 patents)

5. Ludwig Wesch (2 out of 9 patents)

6. Uwe Kraeft (2 out of 2 patents)

7. Helmut Steinegger (2 out of 2 patents)

8. Paul Korf (1 out of 1 patent)

9. Volker Schneider (1 out of 1 patent)

10. Fritz Toepel (1 out of 1 patent)

11. Stefan Hofbauer (1 out of 1 patent)

12. Manfred Tax (1 out of 1 patent)

13. Hans Peter Braunbach (1 out of 1 patent)

14. Jochen Ziegler (1 out of 1 patent)

15. Helmut Erhard (1 out of 1 patent)

15 patents: Sort by Forward Citations

1. 6238474 - Quick-setting, hydraulic binding agent (2001-05-29),

2. 6146133 - Process for the recycling of residues for the production of portland (2000-11-14),

3. 5667582 - Method for dry desulfurizing flue gases (1997-09-16),

4. 5667581 - Quick-hardening hydraulic bonding agent (1997-09-16),

5. 5566467 - Cyclone heat exchanger (1996-10-22),

6. 4899915 - Silo for bulk goods (1990-02-13),

7. 4810552 - Tension chord made of hydraulically setting masses (1989-03-07),

8. 4778276 - Device and process for continuous supply of hydraulically setting (1988-10-18),

9. 4657623 - Process and apparatus for the manufacture of tubular hollow bodies and (1987-04-14),

10. 4655982 - Method for the continuous production of plates of fibre reinforced (1987-04-07),

11. 4632720 - Apparatus for preparing an annular body of a hydraulically setting mass (1986-12-30),

12. 4472335 - Method for preparing an annular body of a hydraulically setting mass (1984-09-18),

13. 4312904 - Fast-hardening hydraulic cement mass and surfacing method using the mass (1982-01-26),

14. 4292364 - Multi-layer board (1981-09-29),

15. 4280418 - Method of combining in-the-mill drying and firing of coal with enhanced (1981-07-28),

HeidelbergCement AG is one of the world's largest building materials companies and a major player in the cement, aggregates, and ready-mix concrete markets. Headquartered in Germany, the company operates globally with more than 50,000 employees and a strong market position in Europe, North America, and Asia. HeidelbergCement is committed to sustainability and innovation in the construction industry.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

15 Patents

#29 in Heidelberg

#2,772 in Germany

#38,719 in the World

Heidelberg, Germany

Heidelberger Zement Ag

Forward Citations = 114

17 inventors:

Adolf Meyer (7 out of 7 patents)

Manfred Pfeifer (3 out of 3 patents)

Joachim Unsin (2 out of 2 patents)

4. Helmut S Erhard (2 out of 2 patents)

5. Ludwig Wesch (2 out of 9 patents)

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