Zurich, Switzerland

Hans Krapfenbauer

This inventor holds 6 USPTO granted patents. Top assignees: Ernst Grob Ag, Firma Ernst Grob, Ernst Grob. Active years: 1978-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hans Krapfenbauer. Retrieved from https://idiyas.com/inventor/hans-krapfenbauer

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 = 1.2

ph-index = 3

Forward Citations = 24(Granted Patents)


Location History:

  • Zurich, CH (1978 - 1989)
  • Kuesnacht, CH (1994)
  • Kusnacht, CH (1996)

Company Filing History:


Years Active: 1978-1996

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6 patents (USPTO):Explore Patents

Title: Innovations of Hans Krapfenbauer in Cold Forming Technology

Introduction

Hans Krapfenbauer is a notable inventor based in Zurich, Switzerland. He has made significant contributions to the field of cold forming technology, holding a total of 6 patents. His work focuses on innovative processes that enhance the production of toothed racks and hollow workpieces.

Latest Patents

Krapfenbauer's latest patents include a process for the production of a toothed rack via cold forming. This process involves an apparatus designed to practice the method effectively. The cold-formed rack workpiece exhibits multiple traces of cold forming in the toothing direction. During production, the workpiece is moved transversely to the axis of the rolling head, which is rotatably driven. The rolls, equipped with forming ribs, are journaled within the rolling head along at least one helical line. Each roll performs quick, overlapping rolling steps in the feed direction of the apparatus slide. The forming ring ribs engage the workpiece, displacing material from the bottom land area of the toothings to the top land area, allowing for form rolling of the top land area as well.

Another significant patent involves the production of a hollow workpiece profiled at least internally. This method, known as the Grob method, utilizes a partially profiled mandrel. During the cold forming operation, a forming or impact roller shapes the workpiece blank radially and axially in a single operation. This innovative approach achieves economical production of high-quality workpieces.

Career Highlights

Throughout his career, Krapfenbauer has worked with esteemed companies such as Ernst Grob AG and Firma Ernst Grob. His experience in these organizations has allowed him to refine his skills and contribute to advancements in cold forming technology.

Collaborations

Krapfenbauer has collaborated with notable individuals in the industry, including Ernst Grob and Daniel Deriaz. These partnerships have fostered innovation and development in the field.

Conclusion

Hans Krapfenbauer's contributions to cold forming technology through his patents and collaborations highlight his role as a significant inventor in the industry. His innovative processes continue to influence manufacturing practices today.

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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