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Ismaning, Germany

Refratechnik Holding Gmbh

USPTO Granted Patents = 26

% Expired Patents = 26.9

CIPO Patents = 1

EPO Patents = 33

Trademarks = 16

Forward Citations = 44

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30 inventors (with patents filed for the assignee):

Helge Jansen (14 out of 18 patents)

Holger Wirsing (7 out of 8 patents)

Thomas Schemmel (6 out of 6 patents)

4. Petra Stein (4 out of 4 patents)

5. Hans-Jürgen Klischat (4 out of 4 patents)

6. Carsten Vellmer (4 out of 4 patents)

7. Peter Bartha (4 out of 9 patents)

8. Michael Schölwer (3 out of 3 patents)

9. Volker Stein (3 out of 3 patents)

10. Guido Weibel (2 out of 3 patents)

11. Hans-Jurgen Klischat (2 out of 3 patents)

12. Heinrich Grosse Daldrup (2 out of 2 patents)

13. Christos Georgios Aneziris (2 out of 8 patents)

14. Jennifer Werz (1 out of 1 patent)

15. Bertram Kesselheim (1 out of 1 patent)

Core Competencies:

Refractory Products

Ceramic Materials

Industrial Furnaces

Fireproof Mixtures

Geopolymer-Binder

Calcium Zirconate

Porous Sintered Magnesia

Heat Insulating Bodies

Carbon-Bonded Magnesia

Molded Bodies

Refractory Concrete

Granulated Raw Materials

26 patents: Sort by Forward Citations

1. 12715815 - Batch for the production of a coarse ceramic refractory basic product, such product and method for its production, lining of an industrial furnace and industrial furnace (2026-08-25),

2. 12486201 - Dry material mixture for a backfill, preferably a refractory concrete backfill, for producing a heavy-clay refractory non-basic product, refractory concrete backfill and such a product, method for producing same, lining, and industrial furnace, channel transport system or mobile transport vessel (2025-12-02),

3. 11603319 - Synthesis method for producing a calcium zirconate-containing material and batch and coarse ceramic refractory product having a pre-synthesized calcium zirconate-containing granular material (2023-03-14),

4. 11440847 - Method for producing a porous sintered magnesia, backfill for producing a heavy-clay refractory product with a granulation from the sintered magnesia, product of this type, and method for the production thereof, lining of an industrial furnace and industrial furnace (2022-09-13),

5. 11219943 - Plate, in particular covering plate for molten metal, and method for producing the plate and use thereof (2022-01-11),

6. 11150022 - Use of a heat insulating molded body for isolation of molten metal against the atmosphere or against a metallurgical vessel (2021-10-19),

7. 11148973 - Insulating, refractory molded body, especially plate, and process for its manufacture and its usage (2021-10-19),

8. 10227260 - Refractories and use thereof (2019-03-12),

9. 10207955 - Refractories and use thereof (2019-02-19),

10. 10093581 - Refractory batch and use thereof (2018-10-09),

11. 10029945 - Geopolymer-binder system for fire concretes, dry fire concrete mix containing the binder system and also the use of the mix (2018-07-24),

12. 9862645 - Fireproof product containing graphite, method for producing said product, and use of said product (2018-01-09),

13. 9809498 - Refractory coarse ceramic product and method for producing the same and its use (2017-11-07),

14. 9403728 - Flame-retardant product and use thereof (2016-08-02),

15. 9382161 - Process using non-fired refractory products as a lining of large-volume industrial furnaces and industrial furnaces lined with the non-fired refractory products (2016-07-05),

Company Overview

Refratechnik Holding GmbH is a leading provider of refractory solutions, specializing in the development and manufacturing of high-performance materials for various industries, including steel, cement, and glass. The company focuses on innovative technologies that enhance thermal insulation and energy efficiency, contributing to sustainable industrial processes. With a strong presence in the global market, Refratechnik is committed to advancing refractory technology and providing tailored solutions to meet the evolving needs of its clients.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

26 Patents

#2 in Ismaning

#1,786 in Germany

#24,806 in the World

Ismaning, Germany

Refratechnik Holding Gmbh

Forward Citations = 44

30 inventors:

Helge Jansen (14 out of 18 patents)

Holger Wirsing (7 out of 8 patents)

Thomas Schemmel (6 out of 6 patents)

4. Petra Stein (4 out of 4 patents)

5. Hans-Jürgen Klischat (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Refratechnik Holding Gmbh. Retrieved from https://idiyas.com/company/refratechnik-holding

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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