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Heraeus Quarzschmelze Gmbh

USPTO Granted Patents = 50

Trademarks = 4

Forward Citations = 856

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54 inventors (with patents filed for the assignee):

Fritz Simmat (11 out of 14 patents)

Karlheinz Rau (11 out of 14 patents)

Karl A Schulke (10 out of 11 patents)

4. Albert Muhlich (6 out of 6 patents)

5. Rolf Bruning (6 out of 6 patents)

6. Uwe Christiansen (5 out of 13 patents)

7. Norbert Treber (5 out of 5 patents)

8. Karl Kreutzer (4 out of 5 patents)

9. Anton Steinkohl (3 out of 8 patents)

10. Norbert Mittelstadt (3 out of 3 patents)

11. Hans-Ulrich Bonewitz (3 out of 3 patents)

12. Jurgen Roth (3 out of 3 patents)

13. Karl-Albert Schulke (3 out of 3 patents)

14. Christopher J Bayne (3 out of 3 patents)

15. Helmut Leber (2 out of 11 patents)

Core Competencies:

Glass Body

Infrared Radiator

Continuous Oven

Silicon Dioxide

Semiconductor Substrates

Vitreous Fused

Light-Weight Mirror

Optical Radiation

Quartz Glass

Furnace Loading

Bubble-Free Material

Electrode Connecting Cable

50 patents: Sort by Forward Citations

1. 5049175 - Method of manufacturing a glass body having a non-uniform refractive (1991-09-17),

2. 5003284 - Infrared radiator (1991-03-26),

3. 4978836 - Continuous oven (1990-12-18),

4. 4964227 - Apparatus for drying finely divided solids (1990-10-23),

5. 4962310 - Radiant unit (1990-10-09),

6. 4956059 - Process for the purification of granular silicon dioxide (1990-09-11),

7. 4923497 - Method for the continuous production of a tube or rod of vitreous fused (1990-05-08),

8. 4915624 - Continuous oven for soldering electronic components (1990-04-10),

9. 4915474 - Transmission line for optical radiation and applications thereof (1990-04-10),

10. 4898604 - Method of manufacturing a blank for a light-weight mirror with a (1990-02-06),

11. 4842628 - Method of verifying a porous article made out of glass soot and furnace (1989-06-27),

12. 4826521 - Method of manufacturing articles of extremely pure synthetic particulate (1989-05-02),

13. 4775317 - Oven for the heat treatment of semiconductor substrates (1988-10-04),

14. 4720407 - Double-walled quartz-glass tube for semiconductor-technology processes (1988-01-19),

15. 4676814 - Method for the continuous building of a hollow cylindrical soot body (1987-06-30),

Company Overview

Heraeus Quarzschmelze GmbH, based in Hanau, Germany, specializes in the development and manufacturing of high-purity quartz glass products for the semiconductor industry. The company focuses on advanced technologies such as vitreous fused materials and silicon dioxide substrates, which are essential for semiconductor fabrication. Their expertise extends to producing infrared radiators and light-weight mirrors, catering to various applications in optical radiation and continuous oven systems, thereby supporting innovation in semiconductor manufacturing.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

50 Patents

#15 in Hanau

#1,053 in Germany

#14,013 in the World

Heraeus Quarzschmelze Gmbh

Forward Citations = 856

54 inventors:

Fritz Simmat (11 out of 14 patents)

Karlheinz Rau (11 out of 14 patents)

Karl A Schulke (10 out of 11 patents)

4. Albert Muhlich (6 out of 6 patents)

5. Rolf Bruning (6 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Heraeus Quarzschmelze Gmbh. Retrieved from https://idiyas.com/company/heraeus-quarzschmelze

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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