Rheydt, Germany

Hermann Josef Frentzen

This inventor holds 3 USPTO granted patents. Top assignee: Mannesmann Aktiengesellschaft. Active years: 1977-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hermann Josef Frentzen. Retrieved from https://idiyas.com/inventor/hermann-josef-frentzen

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 3.5

ph-index = 2

Forward Citations = 22(Granted Patents)


Location History:

  • Rheydt, DE (1977)
  • Monchengladbach, DE (1978 - 1992)

Company Filing History:


Years Active: 1977-1992

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3 patents (USPTO):Explore Patents

Title: Hermann Josef Frentzen: Innovator in Seamless Tube Manufacturing

Introduction

Hermann Josef Frentzen is a notable inventor based in Rheydt, Germany. He has made significant contributions to the field of manufacturing, particularly in the production of seamless tubes. With a total of 3 patents to his name, Frentzen's work has had a lasting impact on the industry.

Latest Patents

Frentzen's latest patents include a method and apparatus for manufacturing seamless tubes. This innovative process involves the deformation of a hollow ingot before it enters a continuous-tube rolling mill. The design ensures that the clearance between a mandrel and the inner surface of the hollow ingot is optimized, which increases the stretch in the first roll groove. This advancement allows for a higher total stretch limit and relieves the central roll groove. Another significant patent is for a mechanical tube expander designed for step-by-step expanding of steel pipes with spiral welded seams. This expander features an innovative head made up of circumferentially arranged segments that expand radially outward to engage the inside of the pipe without damaging the welded seams.

Career Highlights

Hermann Josef Frentzen is associated with Mannesmann Aktiengesellschaft, a leading company in the manufacturing sector. His work has been instrumental in advancing techniques for seamless tube production, which is crucial for various applications in engineering and construction.

Collaborations

Frentzen has collaborated with notable coworkers such as Gerhard Hendrix and Alfred Lampe. Their combined expertise has contributed to the successful development of innovative manufacturing processes.

Conclusion

Hermann Josef Frentzen's contributions to seamless tube manufacturing exemplify the spirit of innovation in engineering. His patents reflect a commitment to improving manufacturing techniques and enhancing product quality.

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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