Forward Citations = 39

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7 inventors (with patents filed for the assignee):

Friedrich Donhauser (3 out of 4 patents)

Anton Schoengen (2 out of 16 patents)

Jorg Porschen (2 out of 5 patents)

4. Johann H Schroeder (1 out of 3 patents)

5. Helmut F Trawinski (1 out of 2 patents)

6. Johann H Shroeder (1 out of 1 patent)

7. Guido Ropertz (1 out of 1 patent)

4 patents: Sort by Forward Citations

1. 4755295 - Multistage arrangement for countercurrent separation and methods of (1988-07-05),

2. 4750993 - Process and apparatus for the separation of metallic components from (1988-06-14),

3. 4707274 - Multistage arrangement for countercurrent separation and methods of (1987-11-17),

4. 4134828 - System and method for the fractionation of suspended solids by means of (1979-01-16),

Company Overview

Amberger Kaolinwerke GmbH is a leading supplier of high-quality kaolin products for various industries. With over 100 years of experience in mining and processing kaolin, the company offers a wide range of products including kaolin clays, calcined kaolins, and specialty kaolins. Their products are used in applications such as ceramics, paper, coatings, plastics, and more. The company is known for its commitment to excellence, innovation, and sustainability in the kaolin industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

4 Patents

#1 in Hirschau,Oberpfalz

#7,032 in Germany

Hirschau, Germany

Amberger Kaolinwerke Gmbh

Forward Citations = 39

7 inventors:

Friedrich Donhauser (3 out of 4 patents)

Anton Schoengen (2 out of 16 patents)

Jorg Porschen (2 out of 5 patents)

4. Johann H Schroeder (1 out of 3 patents)

5. Helmut F Trawinski (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Amberger Kaolinwerke Gmbh. Retrieved from https://idiyas.com/company/amberger-kaolinwerke

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]