% Expired Patents = 50.0

EPO Patents = 6

Trademarks = 7

Forward Citations = 2

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4 inventors (with patents filed for the assignee):

Karl Weinberger (3 out of 4 patents)

Wolfram Neidhardt (2 out of 2 patents)

Hans Veit Dennert (1 out of 1 patent)

4. Hermann Andreas Schmid (1 out of 2 patents)

5. Ulrich Sohling (7 patents)

6. Friedrich Ruf (11 patents)

7. Jan Mumme (2 patents)

8. Bernd Linke (2 patents)

9. Elisabeth Neitmann (1 patent)

10. Patrice Ramm (1 patent)

11. Oliver Menhorn (1 patent)

12. Hans-Peter Kohlstadt (8 patents)

13. Hans-Veit Dennert (0 patent)

6 patents: Sort by Forward Citations

1. 11198633 - Method and plant for producing hollow microspheres made of glass (2021-12-14),

2. 11124441 - Hollow glass microspheres and method for producing the same (2021-09-21),

3. 10435328 - Expanded-glass granular material and method for producing same (2019-10-08),

4. 9969637 - Process and facility for treating ammonium-containing wastewater (2018-05-15),

5. 9758419 - Method and installation for producing hollow microbeads of glass (2017-09-12),

6. 7150843 - Process for the production of a shaped article from a lightweight-aggregate granulate and a binder (2006-12-19),

Company Overview

Dennert Poraver GmbH is a leading manufacturer of lightweight aggregate made from post-consumer recycled glass. Their innovative Poraver material is used in a wide range of applications, from construction and insulation to horticulture and automotive industries.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

6 Patents

#2 in Postbauer-Heng

#5,403 in Germany

Postbauer-Heng, Germany

Dennert Poraver Gmbh

Forward Citations = 2

4 inventors:

Karl Weinberger (3 out of 4 patents)

Wolfram Neidhardt (2 out of 2 patents)

Hans Veit Dennert (1 out of 1 patent)

4. Hermann Andreas Schmid (1 out of 2 patents)

5. Ulrich Sohling (7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Dennert Poraver Gmbh. Retrieved from https://idiyas.com/company/dennert-poraver

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]

6 patents (EPO):

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]