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Heidelberg, Germany

Heidelberger Zement Ag

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USPTO Granted Patents = 15

Forward Citations = 115

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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),

Company Overview

Heidelberger Zement AG is a leading global player in the building materials sector, specializing in the production of cement, concrete, and aggregates. With a strong emphasis on sustainability, the company focuses on innovative solutions that enhance construction efficiency and reduce environmental impact. Headquartered in Heidelberg, Germany, it operates numerous facilities across various regions, leveraging advanced technologies to support infrastructure development and urbanization efforts worldwide.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

15 Patents

#30 in Heidelberg

#2,781 in Germany

#40,018 in the World

Heidelberg, Germany

Heidelberger Zement Ag

Forward Citations = 115

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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Heidelberger Zement Ag. Retrieved from https://idiyas.com/company/heidelberger-zement-ag

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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