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For the Inventor, By the Inventor

Kyoto, Japan

Rohm Gmbh

Calculating rank
USPTO Granted Patents = 623

% Expired Patents = 5.6



Trademarks = 10

Forward Citations = 4,285

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629 inventors (with patents filed for the assignee):

goldMedal Werner Siol (32 out of 101 patents)

silverMedal Ernst Pfleiderer (28 out of 30 patents)

bronzeMedal Horst Pennewiss (24 out of 38 patents)

4.  Hans-Dieter Mack (23 out of 37 patents)

5.  Guenter Schroeder (23 out of 23 patents)

6.  Rolf Monsheimer (20 out of 22 patents)

7.  Steffen Krill (18 out of 59 patents)

8.  Franz Wenzel (17 out of 17 patents)

9.  Juergen Christner (16 out of 18 patents)

10.  Peter J Arndt (16 out of 20 patents)

11.  Heinz Vetter (15 out of 31 patents)

12.  Yuki Nakano (14 out of 163 patents)

13.  Hermann Plainer (14 out of 18 patents)

14.  Herbert Fink (14 out of 19 patents)

15.  Siegmund Besecke (14 out of 16 patents)


Core Competencies:
Power Semiconductor Module
SiC Semiconductor Device
Non-Volatile Memory
Semiconductor Integrated Circuit
Light-Emitting Device
Switching Power Supply
Thermal Print Head
Driving Circuit
A/D Converter
Control Chip
Isolation Transformer
Neural Network

623 patents:

1. 12777925 - Semiconductor device, semiconductor module, motor drive device, and vehicle (2026-10-27),
2. 12777699 - Semiconductor device and method of manufacturing same (2026-10-27),
3. 12777663 - Semiconductor device and semiconductor module (2026-10-27),
4. 12776737 - Amplifier circuit, motor driver circuit, positioning device, and hard disk device (2026-10-27),
5. 12776708 - Switching device and DC/DC converter (2026-10-27),
6. 12776688 - Motor drive device, motor system and electronic device (2026-10-27),
7. 12776429 - Chip resistor and mounting structure thereof (2026-10-27),
8. 12772870 - Semiconductor device (2026-10-20),
9. 12772519 - SiC semiconductor device (2026-10-20),
10. 12772483 - Nitride semiconductor device (2026-10-20),
11. 12772355 - Semiconductor device, semiconductor module, LED drive device, DC/DC converter, and vehicle (2026-10-20),
12. 12771350 - Drive circuit (2026-10-20),
13. 12771231 - Driving device, switching power supply device, and electrical appliance (2026-10-20),
14. 12771112 - Overcurrent protection circuit and power supply device (2026-10-20),
15. 12769385 - Power management circuit (2026-10-20),
Company Overview
Rohm GmbH, headquartered in Kyoto, Japan, specializes in the development and manufacturing of semiconductor devices. The company focuses on a diverse range of technologies, including power semiconductor modules, silicon carbide (SiC) devices, and non-volatile memory solutions. Rohm is also recognized for its innovations in semiconductor integrated circuits, light-emitting devices, and switching power supplies. With a commitment to advancing semiconductor technology, Rohm plays a significant role in various industries, enhancing performance and efficiency in electronic applications.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

Rohm Gmbh USPTO Patent Assignee Logo
623 Patents

#18 in Kyoto 615-0031

#324 in Japan

#1,586 in the World

Kyoto, JP
Kyoto, Japan

Rohm Gmbh

Forward Citations = 4,285

629 inventors:

goldMedal Werner Siol (32 out of 101 patents)

silverMedal Ernst Pfleiderer (28 out of 30 patents)

bronzeMedal Horst Pennewiss (24 out of 38 patents)

4.  Hans-Dieter Mack (23 out of 37 patents)

5.  Guenter Schroeder (23 out of 23 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Rohm Gmbh. Retrieved from https://idiyas.com/company/rohm

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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