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For the Inventor, By the Inventor

Vaerlose, Denmark

Topholm & Westermann Aps


USPTO Granted Patents = 17

% Expired Patents = 5.9

Forward Citations = 632

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13 inventors (with patents filed for the assignee):

goldMedal Jan Topholm (5 out of 14 patents)

silverMedal Carl Ludvigsen (3 out of 11 patents)

bronzeMedal Henning Haugaard Andersen (2 out of 9 patents)

4.  Soren E Westermann (2 out of 2 patents)

5.  Svend Vitting Andersen (1 out of 22 patents)

6.  Jorgen Mejner Olsen (1 out of 8 patents)

7.  Thilo Thiede (1 out of 2 patents)

8.  Thomas Kaulberg (1 out of 2 patents)

9.  Lars Baekgaard (1 out of 2 patents)

10.  Jørgen Mejner Olsen (1 out of 2 patents)

11.  Henning Hougaard Andersen (1 out of 1 patent)

12.  Jan To Slashedpholm (1 out of 2 patents)

13.  Christian Topholm (1 out of 1 patent)


17 patents:

1. 6898293 - Hearing aid (2005-05-24),
2. 6816599 - Ear level device for synthesizing music (2004-11-09),
3. 6430296 - Compact modular in-the-ear hearing aid (2002-08-06),
4. 6339647 - Hearing aid with beam forming properties (2002-01-15),
5. 6272229 - Hearing aid with adaptive matching of microphones (2001-08-07),
6. 5995636 - Hearing aid (1999-11-30),
7. 5687241 - Circuit arrangement for automatic gain control of hearing aids (1997-11-11),
8. 5578963 - Integrated amplifier with flat gain for high and low impedance loads (1996-11-26),
9. 5487012 - Method of preparing an otoplasty or adaptive earpiece individually (1996-01-23),
10. 5325872 - Tinnitus masker (1994-07-05),
11. 5300904 - Circuit arrangement for the tank circuit of a high-frequency transmitter (1994-04-05),
12. 5202927 - Remote-controllable, programmable, hearing aid system (1993-04-13),
13. 5105904 - Cerumen trap for hearing aids (1992-04-21),
14. 4947432 - Programmable hearing aid (1990-08-07),
15. 4800636 - Process for manufacturing an in-the-ear canal hearing aid (1989-01-31),
Company Overview
Topholm & Westermann Aps is a Danish company based in Vaerlose, specializing in innovative solutions within the fields of engineering and technology. The organization focuses on developing advanced systems and products that cater to various industries, emphasizing quality and efficiency. With a commitment to research and development, Topholm & Westermann Aps aims to enhance operational capabilities and drive technological advancements, contributing to the evolving landscape of engineering solutions in Denmark and beyond.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

17 Patents

#1 in Vaerlose

#172 in Denmark

#35,918 in the World

Vaerlose, DK
Vaerlose, Denmark

Topholm & Westermann Aps

Forward Citations = 632

13 inventors:

goldMedal Jan Topholm (5 out of 14 patents)

silverMedal Carl Ludvigsen (3 out of 11 patents)

bronzeMedal Henning Haugaard Andersen (2 out of 9 patents)

4.  Soren E Westermann (2 out of 2 patents)

5.  Svend Vitting Andersen (1 out of 22 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Topholm & Westermann Aps. Retrieved from https://idiyas.com/company/topholm-and-westermann-aps

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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