Henstedt-Ulzburg, Germany

Rolf Tenhagen

This inventor holds 3 USPTO granted patents. Top assignees: Koh-I-Noor Rapidograph, Inc., Rotring-Werke Riepe Kg. Active years: 1985-1987.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Rolf Tenhagen. Retrieved from https://idiyas.com/inventor/rolf-tenhagen

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 = 3.7

ph-index = 2

Forward Citations = 38(Granted Patents)


Location History:

  • Henstedt-Ulzburg, DE (1985)
  • Kisdorf, DE (1987)

Company Filing History:


Years Active: 1985-1987

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3 patents (USPTO):Explore Patents

Title: Rolf Tenhagen: Innovator in Writing Instruments

Introduction

Rolf Tenhagen is a notable inventor based in Henstedt-Ulzburg, Germany. He has made significant contributions to the field of writing instruments, holding a total of three patents. His innovative designs focus on enhancing the functionality and usability of writing tools.

Latest Patents

One of Tenhagen's latest patents is a pen holder device. This device features a pen holder body that is pivotable between an operational position and a horizontal readiness position. The design allows for an acute angle between these two positions, ensuring ease of use. The pen holder body rests on bearing shoulders that provide minimal friction against support surfaces, enhancing the overall user experience.

Another notable patent is for a writing instrument with separable compensating means. This writing instrument includes a cylindrical body with a writing tubule at the forward end. It features a separate sheath body that defines compensating chambers, allowing for improved fluid flow and writing performance. The innovative design ensures that the writing fluid tank is securely mounted, providing a seamless writing experience.

Career Highlights

Throughout his career, Rolf Tenhagen has worked with several prominent companies in the writing instrument industry. Notable among these are Koh-i-noor Rapidograph, Inc. and Rotring-Werke Riepe KG. His experience in these organizations has contributed to his expertise and innovative approach to writing instrument design.

Collaborations

Tenhagen has collaborated with several talented individuals in his field, including Harald Hofmann and Axel Mikuteit. These collaborations have likely fostered a creative environment that has led to the development of his innovative patents.

Conclusion

Rolf Tenhagen's contributions to the writing instrument industry through his patents demonstrate his commitment to innovation and design. His work continues to influence the functionality of writing tools, making them more user-friendly and efficient.

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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