Eindhoven, Netherlands

Karel Petrus Rooij

This inventor holds 1 USPTO granted patent. Top assignee: U.S. Philips Corporation. Active years: 1976.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Karel Petrus Rooij. Retrieved from https://idiyas.com/inventor/karel-petrus-rooij

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 = 8.0

ph-index = 1

Forward Citations = 36(Granted Patents)


Company Filing History:


Years Active: 1976

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1 patent (USPTO):Explore Patents

Title: Karel Petrus Rooij: Innovator in Television Tuner Technology

Introduction

Karel Petrus Rooij is a notable inventor based in Eindhoven, Netherlands. He has made significant contributions to the field of television technology, particularly in the development of tunable high-frequency input circuits. His innovative work has led to the creation of a patent that enhances the functionality of television receivers.

Latest Patents

Karel Rooij holds a patent for a "Tunable high frequency input circuit for a television receiver." This invention features an integrated circuit (IC) television tuner that includes a tunable oscillator and a fixed oscillator, along with two mixer stages and a filter in between. The tuner operates at two intermediate frequencies, with the first frequency lying in the GHz range. The two oscillators are coupled through hybrid rings, allowing for improved performance in television reception.

Career Highlights

Rooij is associated with U.S. Philips Corporation, a leading company in the electronics industry. His work at Philips has allowed him to focus on advancements in television technology, contributing to the company's reputation for innovation. His patent reflects his expertise and commitment to enhancing consumer electronics.

Collaborations

Throughout his career, Karel Rooij has collaborated with notable colleagues, including Gerd Schiefer and Lammert Bruntink. These partnerships have fostered a creative environment that encourages the development of cutting-edge technologies in the field of electronics.

Conclusion

Karel Petrus Rooij is a distinguished inventor whose work in television tuner technology has made a lasting impact. His patent for a tunable high-frequency input circuit exemplifies his innovative spirit and dedication to advancing technology. His contributions continue to influence the electronics industry and improve the quality of television reception for consumers.

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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