Oberkochen, Germany

Willi Keydell

This inventor holds 2 USPTO granted patents. Top assignee: Carl-Zeiss-Stiftung. Active years: 1978-1980.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Willi Keydell. Retrieved from https://idiyas.com/inventor/willi-keydell

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 = 2.7

ph-index = 2

Forward Citations = 64(Granted Patents)


Company Filing History:


Years Active: 1978-1980

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2 patents (USPTO):Explore Patents

Title: Willi Keydell and His Optical Microscope Innovations.

Introduction

Willi Keydell was an inventor associated with Oberkochen, Germany, and Carl Zeiss Stiftung. His recorded work includes 2 patents focused on optical microscopy and microscope design.

Latest Patents

Keydell’s patent for an inverted-design optical microscope describes a versatile instrument built around a U-shaped housing with integrated optical components. A removable specimen table attaches to both upright legs, while the lens system can be adjusted vertically beneath the table. The design accommodates viewing with reflected light or transillumination, with the light source mounted outside the housing to reduce heat transfer to the housing and lens system.

His patent for a binocular barrel with adjustable interpupillary distance and target addresses the alignment of a target line in a microscope eyepiece. Swiveling eyepiece housings allow adjustment for different observers, while a parallelogram mechanism coordinates their rotation with the target-line support. This arrangement keeps the target line consistently oriented relative to the viewed object.

Career Highlights

The available patent information highlights Keydell’s contributions to practical microscope engineering. His inventions address instrument versatility, thermal isolation, observer comfort, and consistent viewing alignment.

Collaborations

Keydell was associated with Carl Zeiss Stiftung. His listed coworkers include Friederich K. Mollring and Manfred Meyer.

Conclusion

Willi Keydell’s two recorded patents reflect a focused contribution to optical microscopy, combining adaptable instrument construction with improved binocular viewing.

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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