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Erfurt, Germany

X-Fab Semiconductor Foundries Ag

USPTO Granted Patents = 91

% Expired Patents = 15.4

EPO Patents = 11

Trademarks = 1

Forward Citations = 167

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117 inventors (with patents filed for the assignee):

Ralf Lerner (19 out of 29 patents)

Paul Ronald Stribley (9 out of 11 patents)

Daniel Gaebler (8 out of 8 patents)

4. Uwe Eckoldt (7 out of 7 patents)

5. Deb Kumar Pal (6 out of 7 patents)

6. Thomas Uhlig (5 out of 5 patents)

7. Kia Yaw Kee (5 out of 5 patents)

8. Roy Knechtel (4 out of 7 patents)

9. Gabriel Kittler (4 out of 4 patents)

10. John Nigel Ellis (4 out of 9 patents)

11. Tsui Ping Chu (4 out of 4 patents)

12. Wolfgang Einbrodt (4 out of 4 patents)

13. Konrad Bach (4 out of 4 patents)

14. Xuezhou Cao (3 out of 5 patents)

15. Sang Sool Koo (3 out of 3 patents)

Core Competencies:

High Electron Mobility Transistor

CMOS Technologies

Pressure Sensor

Vertical Hall Sensor

Bipolar Transistor

LDMOS Transistors

OLED Manufacturing

Isolation Trench

Transistor Array

Nanostructures

Electrostatic Discharge Protection

Power Transistors

91 patents: Sort by Forward Citations

1. 10446675 - Noff III-nitride high electron mobility transistor (2019-10-15),

2. 10388785 - LDMOS transistors for CMOS technologies and an associated production method (2019-08-20),

3. 10297502 - Isolation structure for micro-transfer-printable devices (2019-05-21),

4. 10181429 - Method for the formation of transistors PDSO1 and FDSO1 on a same substrate (2019-01-15),

5. 10151794 - Sleek serial interface for a wrapper boundary register (device and method) (2018-12-11),

6. 10074681 - Light shield for light sensitive elements (2018-09-11),

7. 10068935 - Image lag free pixel (2018-09-04),

8. 10031003 - Relative and absolute pressure sensor combined on chip (2018-07-24),

9. 10026734 - MOS device assembly (2018-07-17),

10. 10014314 - Semiconductor device and methods of manufacture thereof (2018-07-03),

11. 9985237 - Method of manufacturing an organic light emitting diode by lift-off (2018-05-29),

12. 9947662 - CMOS circuits suitable for low noise RF applications (2018-04-17),

13. 9875900 - Method of fabricating a tunnel oxide layer and a tunnel oxide layer for a semiconductor device (2018-01-23),

14. 9793338 - Capacitor structures for semiconductor device (2017-10-17),

15. 9748383 - Transistor (2017-08-29),

Company Overview

X-Fab Semiconductor Foundries AG is a prominent player in the semiconductor industry, specializing in the development and manufacturing of advanced semiconductor devices. Headquartered in Erfurt, Germany, the company focuses on a diverse range of technologies including High Electron Mobility Transistors, CMOS technologies, and various sensor applications such as pressure and vertical Hall sensors. X-Fab also excels in the production of LDMOS transistors and OLED manufacturing, leveraging its expertise to serve multiple sectors within the semiconductor market.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

91 Patents

#1 in Erfurt

#645 in Germany

#8,443 in the World

Erfurt, Germany

X-Fab Semiconductor Foundries Ag

Forward Citations = 167

117 inventors:

Ralf Lerner (19 out of 29 patents)

Paul Ronald Stribley (9 out of 11 patents)

Daniel Gaebler (8 out of 8 patents)

4. Uwe Eckoldt (7 out of 7 patents)

5. Deb Kumar Pal (6 out of 7 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: X-Fab Semiconductor Foundries Ag. Retrieved from https://idiyas.com/company/x-fab-semiconductor-foundries-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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