Eindhoven, Netherlands

Johannes J Kalfs

This inventor holds 9 USPTO granted patents. Top assignees: U.S. Philips Corporation, Onstream, Inc.. Active years: 1984-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Johannes J Kalfs. Retrieved from https://idiyas.com/inventor/johannes-j-kalfs

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 = 4

Forward Citations = 50(Granted Patents)


Company Filing History:


Years Active: 1984-2000

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9 patents (USPTO):Explore Patents

Title: Innovations of Johannes J Kalfs

Introduction

Johannes J Kalfs is a notable inventor based in Eindhoven, Netherlands. He has made significant contributions to the field of information recording and reproduction technology. With a total of nine patents to his name, Kalfs has demonstrated a strong commitment to innovation and advancement in his area of expertise.

Latest Patents

Kalfs' latest patents include a system for recording and/or reproducing information medium. This invention involves a magnetic tape formatted by a write head, along with an apparatus that includes a magnetic head unit movable in a transverse direction by an actuator. The write head records the magnetic tape with a pattern of servotracks, which contain servosignals that are phase opposition to each other. The design allows for precise control and efficient recording of information, showcasing Kalfs' ingenuity in the field.

Career Highlights

Throughout his career, Kalfs has worked with prominent companies such as U.S. Philips Corporation and Onstream, Inc. His experience in these organizations has contributed to his development as an inventor and has provided him with valuable insights into the industry.

Collaborations

Kalfs has collaborated with notable individuals in his field, including Abraham Hoogendoorn and Theodorus G Martens. These collaborations have likely enriched his work and fostered a creative environment for innovation.

Conclusion

Johannes J Kalfs is a distinguished inventor whose work in information recording technology has led to multiple patents and significant advancements in the field. His contributions continue to influence the industry and inspire future innovations.

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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