Cologne, Germany

Harald Siegert

This inventor holds 1 USPTO granted patent. Top assignee: Deutz Aktiengesellschaft. Active years: 1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Harald Siegert. Retrieved from https://idiyas.com/inventor/harald-siegert

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 1

Forward Citations = 6(Granted Patents)


Company Filing History:


Years Active: 1999

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1 patent (USPTO):Explore Patents

Title: Harald Siegert and Diesel Engine Cold-Starting Technology.

Introduction

Harald Siegert is an inventor associated with Cologne, Germany, and Deutz Aktiengesellschaft. His recorded patent work concerns a method and apparatus designed to assist diesel engines during cold starts.

Latest Patents

Siegert is associated with 1 patent, titled “Cold Starting Assistance for Diesel Engines.” The invention uses a sheathed-element glow plug in the combustion chamber and a heater plug in the air intake. A control device operates the plugs in response to engine operating parameters, particularly engine temperature.

Career Highlights

Siegert’s documented contribution focuses on improving diesel-engine cold starting through coordinated heating in the combustion chamber and air intake. The patent identifies Deutz Aktiengesellschaft as his company.

Collaborations

Siegert’s listed coworkers include Reinhard Rechberg and Heinz-Wolfgang Fuchs.

Conclusion

Harald Siegert’s recorded invention addresses diesel-engine cold starting with a temperature-responsive system that coordinates two types of heater plugs.

Profile summary based on public USPTO records.
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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