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For the Inventor, By the Inventor

Eindhoven, Netherlands

Adrianus Sempel

This inventor holds 12 USPTO granted patents and 2 published patent applications. Top assignee: U.S. Philips Corporation. Active years: 1983-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Adrianus Sempel. Retrieved from https://idiyas.com/inventor/adrianus-sempel-z8l2uzh5

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 12 

% Patents Active = 100.0

Average Co-Inventor Count = 1.2

ph-index = 8

Forward Citations = 211(Granted Patents)


Company Filing History:

goldMedal12 out of 14,087 
 
U.S. Philips Corporation
 patents

Years Active: 1983-2001

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12 patents (USPTO):Explore Patents
1. 6324233 - Reception of modulated carriers having asymmetrical sidebands (2001-11-27),
2. 5619538 - Pulse shaping FM demodular with low noise where capacitor charge starts (1997-04-08),
3. 5430414 - Oscillator circuit with suppression of voltage transients (1995-07-04),
4. 5408196 - Tunable device (1995-04-18),
5. 5017890 - Phase-controllable oscillator (1991-05-21),
6. 4937516 - Balanced voltage-current converter and double-balanced mixer circuit (1990-06-26),
7. 4877979 - Filter arrangement (1989-10-31),
8. 4871985 - Low noise relaxation oscillator (1989-10-03),
9. 4628281 - Feedback amplifier with reduced distortion (1986-12-09),
10. 4453090 - MOS Field-effect capacitor (1984-06-05),
11. 4423387 - Current mirror arrangement (1983-12-27),
12. 4399375 - Current stabilizer comprising enhancement field-effect transistors (1983-08-16),

Title: The Innovations of Adrianus Sempel

Introduction

Adrianus Sempel is a notable inventor based in Eindhoven, Netherlands. He has made significant contributions to the field of telecommunications, particularly in the area of signal processing. With a total of 12 patents to his name, Sempel's work has advanced the quality of signal reception and demodulation techniques.

Latest Patents

One of Sempel's latest patents is titled "Reception of modulated carriers having asymmetrical sidebands." This invention focuses on improving the reception quality of modulated carriers, such as TV signals, by utilizing a synchronous demodulator to derive a vectorial baseband signal. The design includes a filter that compensates for sideband asymmetry, enhancing the overall reception quality.

Another significant patent is "Pulse shaping FM demodulator with low noise where capacitor charge starts." This invention describes a receiver that incorporates an FM demodulator and a low-pass filter. The pulse shaper within this system generates low-noise pulses by controlling the charging and discharging of a capacitance based on the input signal's edges. This innovative approach allows for improved signal processing and noise reduction.

Career Highlights

Adrianus Sempel is currently employed at U.S. Philips Corporation, where he continues to develop cutting-edge technologies in telecommunications. His work has not only contributed to the company's portfolio but has also influenced the industry as a whole. Sempel's inventions reflect a deep understanding of signal processing and a commitment to enhancing communication technologies.

Collaborations

Throughout his career, Sempel has collaborated with esteemed colleagues such as Johannes Van Nieuwenburg and Eduard Ferdinand Stikvoort. These partnerships have fostered a creative environment that has led to numerous innovations in the field.

Conclusion

Adrianus Sempel's contributions to telecommunications through his patents and collaborations highlight his role as a leading inventor in the industry. His innovative approaches to signal processing continue to shape the future of communication technology.

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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