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For the Inventor, By the Inventor

Ostbevern, Germany

Friwo Geraetebau Gmbh


USPTO Granted Patents = 8

% Expired Patents = 25.0


Forward Citations = 116

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20 inventors (with patents filed for the assignee):

goldMedal Michael Bothe (3 out of 10 patents)

silverMedal Georg Breuch (3 out of 3 patents)

bronzeMedal Jochen Graeber (1 out of 5 patents)

4.  Klaus Goebel (1 out of 3 patents)

5.  Ralf Schröder Gen Berghegger (1 out of 3 patents)

6.  Andreas Kniesel (1 out of 2 patents)

7.  Kay Van Gen Hassend (1 out of 1 patent)

8.  Ulrich Bernsmann (1 out of 1 patent)

9.  Manfred Wegmann (1 out of 1 patent)

10.  Yonggui Wu (1 out of 1 patent)

11.  Armin Wegener (1 out of 1 patent)

12.  Juergen Heydecke (1 out of 1 patent)

13.  Ingmar Knop (1 out of 1 patent)

14.  Klaus-Dieter Skwirblies (1 out of 1 patent)

15.  Schroder Ralf Gen Berghegger (1 out of 1 patent)


8 patents:

1. 7570013 - Rechargeable battery pack, in particular for use with electrical hand tool devices, charging device, and rechargeable battery pack and charging device system (2009-08-04),
2. 7563115 - Plug-in power supply with exchangeable mains plug unit (2009-07-21),
3. 7362075 - Battery charger with charge state detection on the primary side (2008-04-22),
4. 7002785 - Apparatus for protecting electronic circuitry (2006-02-21),
5. 6912137 - Inductive contactless power transmitter (2005-06-28),
6. 6906498 - Device and method for the detection of a charging voltage (2005-06-14),
7. 6781346 - Charging unit for a contactless transfer of electric power as well as a power absorbing device and a charging system (2004-08-24),
8. 6585530 - Plug-in power supply with miniaturized primary contact means (2003-07-01),
Company Overview
Friwo Geraetebau GmbH is a leading global manufacturer of power supplies and chargers for a wide range of industries including medical, industrial, and consumer electronics. With over 45 years of experience, Friwo is known for their high-quality products and innovative solutions. They offer custom design services and have a strong focus on sustainability and environmental responsibility.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

8 Patents

#3 in Ostbevern

#4,421 in Germany

Ostbevern, DE
Ostbevern, Germany

Friwo Geraetebau Gmbh

Forward Citations = 116

20 inventors:

goldMedal Michael Bothe (3 out of 10 patents)

silverMedal Georg Breuch (3 out of 3 patents)

bronzeMedal Jochen Graeber (1 out of 5 patents)

4.  Klaus Goebel (1 out of 3 patents)

5.  Ralf Schröder Gen Berghegger (1 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Friwo Geraetebau Gmbh. Retrieved from https://idiyas.com/company/friwo-geraetebau

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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