Rockford, IA, United States of America

John F Johannsen

This inventor holds 1 USPTO granted patent. Top assignee: David Manufacturing Company. Active years: 1982.

IDiyas Innovation Intelligence. (2026). Inventor Profile: John F Johannsen. Retrieved from https://idiyas.com/inventor/john-f-johannsen

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 = 2.0

ph-index = 1

Forward Citations = 5(Granted Patents)


Company Filing History:


Years Active: 1982

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1 patent (USPTO):Explore Patents

Title: John F Johannsen: Innovator in Grain Cleaning Technology

Introduction

John F Johannsen is a notable inventor based in Rockford, Iowa, recognized for his contributions to agricultural technology. He has developed a unique grain cleaning apparatus that enhances the efficiency of grain storage by removing foreign materials. His innovative approach has garnered attention in the agricultural sector.

Latest Patents

Johannsen holds a patent for a grain cleaning apparatus designed to remove coarse and fine foreign materials from dirty grain before storage. The apparatus features counter-rotating screen drums that effectively separate unwanted materials from clean grain. The inner drum receives dirty grain, preventing coarse materials from passing through its screen, while fine materials are filtered through the outer drum. This design ensures that clean grain is efficiently collected for storage.

Career Highlights

Throughout his career, Johannsen has been associated with David Manufacturing Company, where he has applied his expertise in developing agricultural machinery. His work has significantly impacted the efficiency of grain processing, making it easier for farmers to prepare their harvest for storage.

Collaborations

Johannsen collaborates with Keith A Braun, contributing to the development and refinement of agricultural technologies. Their partnership has led to advancements in grain cleaning methods, benefiting the agricultural community.

Conclusion

John F Johannsen's innovative grain cleaning apparatus exemplifies his commitment to improving agricultural practices. His contributions continue to influence the industry, ensuring that farmers can store their grain more effectively.

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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